{"id":51036,"date":"2025-09-08T23:36:54","date_gmt":"2025-09-08T14:36:54","guid":{"rendered":"https:\/\/jouhou.main.jp\/?p=51036"},"modified":"2025-09-08T23:36:54","modified_gmt":"2025-09-08T14:36:54","slug":"ntp%e3%81%a8%e6%99%82%e5%88%bb%e3%81%ae%e4%bf%a1%e9%a0%bc%e6%80%a7","status":"publish","type":"post","link":"https:\/\/jouhou.main.jp\/?p=51036","title":{"rendered":"NTP\u3068\u6642\u523b\u306e\u4fe1\u983c\u6027"},"content":{"rendered":"<style>\/* ===== \u30d9\u30fc\u30b9 ===== *\/:root {  --accent: #2589d0;   \/* \u57fa\u672c\u30a2\u30af\u30bb\u30f3\u30c8\u8272\uff1a\u81ea\u7531\u306b\u5909\u66f4\u53ef *\/  --bg-light: #fafafa;  --txt-main: #333;  --radius: 6px;}.jp-container{  font-family: \"Noto Sans JP\", sans-serif;  line-height: 1.8;  margin:0 auto;\/*   max-width: 900px; *\/  color: var(--txt-main);}\/* \u5404\u8981\u7d20\u306e\u4e0a\u306b50pt\u306e\u4f59\u767d\u3092\u5165\u308c\u308b *\/.toc,.solutions,.round,.callout,.box-title,.balloon,table {  margin-top: 50pt;}\/* h2.subtitle \u3060\u3051\u306f120pt \u306b\u4e0a\u66f8\u304d *\/h2.subtitle {  margin-top: 120pt;}\/* h3.section-title \u306f30pt *\/h3.section-title {  margin-top: 30pt;}\/* ===== \u898b\u51fa\u3057 ===== *\/h1 { font-size: 1.9rem; 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border-radius: var(--radius); padding: .7rem 1rem; max-width: 70%; font-size: .92rem; }.balloon--left  .balloon__msg { background: #fff;  }.balloon--right .balloon__msg { background: #30e852; margin-left: auto; }.balloon--left  .balloon__msg::before,.balloon--right .balloon__msg::before {  content: \"\"; position: absolute; top: 10px; width: 12px; height: 12px;  background: inherit; transform: rotate(45deg);}.balloon--left  .balloon__msg::before  { left: -6px; }.balloon--right .balloon__msg::before { right: -6px; }\/* ===== \u8868 (table) ===== *\/table { border-collapse: collapse; margin:0 auto; width: 100%; }th,td { border: 1px solid #ccc; padding: .5em .7em; }th   { background: var(--bg-light); }\/* ===== \u8ffd\u52a0: subtitle \u7528\u30b9\u30bf\u30a4\u30eb (.subtitle \u306b\u5bfe\u5fdc) ===== *\/.subtitle {  padding: .5em .7em;  border-left: 5px solid #333e8e;  border-bottom: 3px solid #d2d2d2;  background-color: #f2f2f2;  color: #333333;}\/* ===== \u8ffd\u52a0: section-title \u7528\u30b9\u30bf\u30a4\u30eb (.section-title \u306b\u5bfe\u5fdc) ===== *\/.section-title {  display: flex;  align-items: center;  column-gap: 8px;  color: #333333;  border-bottom: 1px solid #2589d0;}.section-title::before {  width: 0.8em;  height: 0.4em;  border-bottom: 4px solid #2589d0;  border-left: 4px solid #2589d0;  transform: rotate(-45deg) translate(2px, -2px);  content: '';}.section-title span {  display: inline-block;  position: relative;  padding: 0 .4em .2em;  color: #333333;}.section-title span::before {  position: absolute;  bottom: -3px;  left: 0;  width: 100%;  height: 3px;  background-color: #2589d0;  content: '';}\/* ===== \u8ffd\u52a0: Mermaid SVG \u7528\u30b9\u30da\u30fc\u30b9 ===== *\/.mermaid_svg {  margin-top: 50pt;  margin-bottom: 50pt;}\/* ===== \u8ffd\u52a0: \u56f3\u30ad\u30e3\u30d7\u30b7\u30e7\u30f3 ===== *\/.mermaid_caption {  font-weight: bold;  text-decoration: underline;  margin-bottom: 20pt;}<\/style>\n<div class='jp-container'>\n<section class='solutions'>\n<h2>\u89e3\u6c7a\u3067\u304d\u308b\u3053\u3068<\/h2>\n<ul>\n<li>NTP\u306e\u57fa\u672c\u7684\u306a\u4ed5\u7d44\u307f\u3068\u52d5\u4f5c\u539f\u7406\u3092\u7406\u89e3\u3067\u304d\u308b<\/li>\n<li>\u6642\u523b\u306e\u6b63\u78ba\u6027\u78ba\u4fdd\u306e\u91cd\u8981\u6027\u3068\u30ea\u30b9\u30af\u3092\u628a\u63e1\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/section>\n<nav class='toc'>\n<h2>\u76ee\u6b21<\/h2>\n<ul class='toc-list'>\n<li class='toc-item'><a href='#chapter1'>1. NTP\u306e\u4ed5\u7d44\u307f\u3068\u305d\u306e\u91cd\u8981\u6027\u306b\u3064\u3044\u3066\u7406\u89e3\u3057\u305f\u3044<\/a><\/li>\n<li class='toc-item'><a href='#chapter2'>2. \u30d7\u30ed\u306b\u76f8\u8ac7\u3059\u308b<\/a><\/li>\n<li class='toc-item'><a href='#chapter3'>3. \u4f01\u696d\u306e\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u6642\u523b\u306e\u6b63\u78ba\u6027\u78ba\u4fdd\u304c\u306a\u305c\u5fc5\u8981\u304b\u77e5\u308a\u305f\u3044<\/a><\/li>\n<li class='toc-item'><a href='#chapter4'>4. \u30c7\u30fc\u30bf\u6574\u5408\u6027\u3068\u6642\u523b\u306e\u30ba\u30ec\u306e\u30ea\u30b9\u30af\u306b\u3064\u3044\u3066\u7406\u89e3\u3059\u308b<\/a><\/li>\n<li class='toc-item'><a href='#chapter5'>5. \u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u6642\u306bNTP\u306e\u8a2d\u5b9a\u30a8\u30e9\u30fc\u304c\u539f\u56e0\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u305f\u3044<\/a><\/li>\n<li class='toc-item'><a href='#chapter6'>6. \u6b63\u78ba\u306a\u6642\u523b\u304c\u306a\u3051\u308c\u3070\u30c7\u30fc\u30bf\u5fa9\u65e7\u3084\u30ea\u30ab\u30d0\u30ea\u306b\u3069\u306e\u3088\u3046\u306a\u5f71\u97ff\u304c\u51fa\u308b\u304b\u77e5\u308a\u305f\u3044<\/a><\/li>\n<li class='toc-item'><a href='#chapter7'>7. NTP\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u3044\u5834\u5408\u306e\u5177\u4f53\u7684\u306a\u30c8\u30e9\u30d6\u30eb\u4f8b\u3092\u77e5\u308a\u305f\u3044<\/a><\/li>\n<li class='toc-item'><a href='#chapter8'>8. NTP\u30b5\u30fc\u30d0\u30fc\u306e\u9078\u5b9a\u57fa\u6e96\u3068\u4fe1\u983c\u6027\u8a55\u4fa1\u30dd\u30a4\u30f3\u30c8\u3092\u7406\u89e3\u3057\u305f\u3044<\/a><\/li>\n<li class='toc-item'><a href='#chapter9'>9. \u4e8b\u696d\u7d99\u7d9a\u8a08\u753b\uff08BCP\uff09\u306b\u304a\u3044\u3066\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u304c\u679c\u305f\u3059\u5f79\u5272\u3092\u77e5\u308a\u305f\u3044<\/a><\/li>\n<li class='toc-item'><a href='#chapter10'>10. \u6642\u523b\u306e\u4fe1\u983c\u6027\u78ba\u4fdd\u306b\u5fc5\u8981\u306a\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3068\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5177\u4f53\u7684\u5bfe\u7b56\u3092\u5b66\u3073\u305f\u3044<\/a><\/li>\n<li class='toc-item'><a href='#chapter11'>11. \u4f01\u696d\u306e\u6cd5\u4ee4\u3084\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u306b\u304a\u3044\u3066NTP\u306e\u9069\u6b63\u904b\u7528\u304c\u6c42\u3081\u3089\u308c\u308b\u7406\u7531\u3092\u7406\u89e3\u3057\u305f\u3044<\/a><\/li>\n<\/ul>\n<\/nav>\n<\/div>\n<div class='jp-container'>\n<section id='chapter1'>\n<h2 class='subtitle'>NTP\u3068\u6642\u523b\u306e\u4fe1\u983c\u6027<\/h2>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u3001\u60c5\u5831\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u6027\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u3068\u3063\u3066\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u306e\u591a\u304f\u306f\u6642\u523b\u60c5\u5831\u3092\u57fa\u6e96\u306b\u52d5\u4f5c\u3057\u3066\u304a\u308a\u3001\u8aa4\u3063\u305f\u6642\u523b\u306f\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3084\u8a3c\u62e0\u306e\u4fe1\u983c\u6027\u3092\u640d\u306a\u3046\u539f\u56e0\u3068\u306a\u308a\u307e\u3059\u3002\u7279\u306b\u707d\u5bb3\u3084\u969c\u5bb3\u767a\u751f\u6642\u306b\u306f\u3001\u6b63\u78ba\u306a\u6642\u523b\u60c5\u5831\u304c\u5fa9\u65e7\u3084\u5206\u6790\u306e\u8fc5\u901f\u5316\u306b\u5bc4\u4e0e\u3057\u307e\u3059\u3002NTP\uff08Network Time Protocol\uff09\u306f\u3001\u305d\u306e\u6642\u523b\u540c\u671f\u3092\u62c5\u3046\u4e3b\u8981\u306a\u6280\u8853\u3067\u3042\u308a\u3001\u4f01\u696d\u306eIT\u30a4\u30f3\u30d5\u30e9\u306b\u304a\u3044\u3066\u4e0d\u53ef\u6b20\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u6bd4\u8f03\u8868\u306f\u3001NTP\u306e\u4ed5\u7d44\u307f\u3068\u4ed6\u306e\u540c\u671f\u65b9\u6cd5\u3068\u306e\u9055\u3044\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30b7\u30b9\u30c6\u30e0\u30af\u30ed\u30c3\u30af\u3068NTP\u306e\u540c\u671f\u65b9\u6cd5\u3092\u6bd4\u8f03\u3059\u308b\u3068\u3001\u305d\u306e\u6b63\u78ba\u6027\u3068\u4fe1\u983c\u6027\u306b\u5927\u304d\u306a\u5dee\u304c\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u3092\u7528\u3044\u305f\u540c\u671f\u8a2d\u5b9a\u3084\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u624b\u6cd5\u3082\u4f75\u305b\u3066\u7406\u89e3\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3046\u3057\u305f\u77e5\u8b58\u3092\u6301\u3064\u3053\u3068\u3067\u3001\u7d4c\u55b6\u5c64\u306b\u5bfe\u3057\u3066\u3082\u6642\u523b\u306e\u91cd\u8981\u6027\u3068\u5bfe\u7b56\u306e\u5fc5\u8981\u6027\u3092\u52b9\u679c\u7684\u306b\u4f1d\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u3001\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306b\u304a\u3044\u3066\u3001\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u306f\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u6b63\u3057\u3044\u7406\u89e3\u3068\u9069\u5207\u306a\u904b\u7528\u3092\u63a8\u9032\u3059\u308b\u3053\u3068\u304c\u3001\u4f01\u696d\u306e\u30ea\u30b9\u30af\u7ba1\u7406\u3068\u4e8b\u696d\u7d99\u7d9a\uff08BCP\uff09\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>NTP\u306e\u57fa\u672c\u7684\u306a\u4ed5\u7d44\u307f\u3068\u52d5\u4f5c\u539f\u7406<\/span><\/h3>\n<p>NTP\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3092\u901a\u3058\u3066\u6b63\u78ba\u306a\u6642\u523b\u3092\u914d\u4fe1\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308a\u3001\u968e\u5c64\u69cb\u9020\uff08\u30b9\u30c8\u30e9atum\uff09\u3092\u6301\u3061\u307e\u3059\u3002\u6700\u4e0a\u5c64\u306e\u539f\u5b50\u6642\u8a08\u3084GPS\u885b\u661f\u304b\u3089\u306e\u6642\u523b\u60c5\u5831\u3092\u3082\u3068\u306b\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u6642\u523b\u3092\u914d\u4fe1\u3057\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3053\u308c\u3092\u53d7\u4fe1\u3057\u3066\u81ea\u8eab\u306e\u30b7\u30b9\u30c6\u30e0\u30af\u30ed\u30c3\u30af\u3092\u8abf\u6574\u3057\u307e\u3059\u3002\u52d5\u4f5c\u539f\u7406\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304cNTP\u30b5\u30fc\u30d0\u30fc\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u308a\u3001\u9045\u5ef6\u3068\u30aa\u30d5\u30bb\u30c3\u30c8\u3092\u8a08\u7b97\u3057\u3066\u6642\u523b\u3092\u88dc\u6b63\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u6570\u30df\u30ea\u79d2\u304b\u3089\u6570\u5341\u30df\u30ea\u79d2\u306e\u7cbe\u5ea6\u3067\u6642\u523b\u540c\u671f\u3092\u884c\u3046\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002NTP\u306f\u81ea\u52d5\u5316\u3055\u308c\u305f\u7d99\u7d9a\u7684\u306a\u540c\u671f\u3092\u884c\u3044\u3001\u6642\u9593\u306e\u30ba\u30ec\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u305f\u3081\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u6574\u5408\u6027\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u304c\u3082\u305f\u3089\u3059\u4f01\u696d\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u6027<\/span><\/h3>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u3001\u4f01\u696d\u306e\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u6027\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u91d1\u878d\u53d6\u5f15\u3084\u30ed\u30b0\u7ba1\u7406\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u76e3\u67fb\u306a\u3069\u3067\u306f\u3001\u6642\u523b\u306e\u30ba\u30ec\u304c\u539f\u56e0\u3067\u4e0d\u6574\u5408\u3084\u30c8\u30e9\u30d6\u30eb\u304c\u767a\u751f\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002NTP\u3092\u9069\u5207\u306b\u904b\u7528\u3059\u308c\u3070\u3001\u30b7\u30b9\u30c6\u30e0\u9593\u306e\u30c7\u30fc\u30bf\u6574\u5408\u6027\u3092\u4fdd\u3061\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3084\u60c5\u5831\u6539\u3056\u3093\u306e\u691c\u77e5\u3082\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u969c\u5bb3\u767a\u751f\u6642\u306e\u539f\u56e0\u8ffd\u53ca\u3084\u8a3c\u62e0\u4fdd\u5168\u306b\u304a\u3044\u3066\u3082\u3001\u6b63\u78ba\u306a\u6642\u523b\u60c5\u5831\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u3053\u308c\u3089\u306f\u7d50\u679c\u3068\u3057\u3066\u3001\u696d\u52d9\u306e\u4fe1\u983c\u6027\u3068\u5b89\u5168\u6027\u306e\u5411\u4e0a\u306b\u5bc4\u4e0e\u3057\u307e\u3059\u3002\u4f01\u696d\u306eIT\u30a4\u30f3\u30d5\u30e9\u306b\u304a\u3044\u3066\u3001\u6642\u523b\u306e\u4fe1\u983c\u6027\u306f\u57fa\u76e4\u3068\u306a\u308b\u8981\u7d20\u3067\u3042\u308a\u3001\u305d\u306e\u7dad\u6301\u7ba1\u7406\u306f\u7d4c\u55b6\u5c64\u306e\u91cd\u8981\u306a\u8cac\u52d9\u3067\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u6642\u523b\u306e\u4fe1\u983c\u6027\u304c\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306b\u4e0e\u3048\u308b\u5f71\u97ff<\/span><\/h3>\n<p>\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u6642\u523b\u306e\u4fe1\u983c\u6027\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u52d5\u4f5c\u3084\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u306b\u591a\u5927\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3084\u30ed\u30b0\u306e\u6642\u523b\u60c5\u5831\u304c\u4e00\u81f4\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3084\u6cd5\u7684\u8a3c\u62e0\u306e\u4fe1\u983c\u6027\u304c\u640d\u306a\u308f\u308c\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3067\u306f\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3084\u5185\u90e8\u4e0d\u6b63\u306e\u8ffd\u8de1\u306b\u304a\u3044\u3066\u6b63\u78ba\u306a\u6642\u523b\u8a18\u9332\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u6642\u523b\u30ba\u30ec\u3084\u8aa4\u5dee\u304c\u751f\u3058\u308b\u3068\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u52d5\u4f5c\u304c\u4e88\u671f\u305b\u306c\u7d50\u679c\u3092\u62db\u3044\u305f\u308a\u3001\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u9055\u53cd\u306b\u554f\u308f\u308c\u308b\u30ea\u30b9\u30af\u3082\u9ad8\u307e\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001NTP\u306b\u3088\u308b\u7d99\u7d9a\u7684\u304b\u3064\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u3001\u4f01\u696d\u904b\u55b6\u306e\u6839\u5e79\u3092\u652f\u3048\u308b\u91cd\u8981\u306a\u8981\u7d20\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p class='mermaid_svg'><a href=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_01.svg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_01.svg\" alt=\"NTP\u3068\u6642\u523b\u306e\u4fe1\u983c\u6027\" class=\"mermaid_svg\" onerror=\"this.src='https:\/\/jouhou.main.jp\/img\/file_mssing.svg';\"><\/a><\/p>\n<p class='mermaid_caption'>NTP\u3068\u6642\u523b\u306e\u4fe1\u983c\u6027<\/p>\n<div class='round'>\n<h4>\u304a\u5ba2\u69d8\u793e\u5185\u3067\u306e\u3054\u8aac\u660e\u30fb\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9<\/h4>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5316\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002\u7d4c\u55b6\u5c64\u306e\u7406\u89e3\u3068\u9069\u5207\u306a\u904b\u7528\u65b9\u91dd\u306e\u7b56\u5b9a\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<\/div>\n<div class='round'>\n<h4>Perspective<\/h4>\n<p>NTP\u306e\u4ed5\u7d44\u307f\u3068\u4fe1\u983c\u6027\u3092\u7406\u89e3\u3057\u3001\u4f01\u696d\u306eIT\u30a4\u30f3\u30d5\u30e9\u306b\u304a\u3044\u3066\u9069\u5207\u306a\u6642\u523b\u540c\u671f\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u3067\u3001\u30ea\u30b9\u30af\u8efd\u6e1b\u3084\u4e8b\u696d\u7d99\u7d9a\u306b\u5927\u304d\u304f\u5bc4\u4e0e\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n<\/section>\n<section id='chapter2'>\n<h2 class='subtitle'>\u30d7\u30ed\u306b\u76f8\u8ac7\u3059\u308b<\/h2>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u6574\u5408\u6027\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u306a\u8981\u7d20\u3067\u3059\u3002\u7279\u306b\u3001\u4f01\u696d\u306e\u57fa\u5e79\u30b7\u30b9\u30c6\u30e0\u3084\u91cd\u8981\u306a\u30c7\u30fc\u30bf\u3092\u6271\u3046\u5834\u9762\u3067\u306f\u3001\u6642\u523b\u306e\u30ba\u30ec\u304c\u30c8\u30e9\u30d6\u30eb\u3084\u30ea\u30b9\u30af\u3092\u751f\u3080\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u81ea\u529b\u3067\u89e3\u6c7a\u3092\u8a66\u307f\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u8907\u96d1\u306a\u30b7\u30b9\u30c6\u30e0\u3084\u591a\u69d8\u306a\u8981\u7d20\u304c\u7d61\u3080\u5834\u5408\u3001\u5c02\u9580\u7684\u306a\u77e5\u8b58\u3068\u7d4c\u9a13\u3092\u6301\u3064\u7b2c\u4e09\u8005\u306b\u4f9d\u983c\u3059\u308b\u3053\u3068\u304c\u6700\u3082\u78ba\u5b9f\u3067\u3059\u3002\u5b9f\u7e3e\u306e\u3042\u308b\u30c7\u30fc\u30bf\u5fa9\u65e7\u3084\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u5bfe\u5fdc\u306e\u5c02\u9580\u4f01\u696d\u306f\u3001\u9577\u5e74\u306b\u308f\u305f\u308a\u591a\u304f\u306e\u4f01\u696d\u306e\u4fe1\u983c\u3092\u5f97\u3066\u304a\u308a\u3001\u7279\u306b\uff08\u682a\uff09\u60c5\u5831\u5de5\u5b66\u7814\u7a76\u6240\u306a\u3069\u306f\u9577\u5e74\u30c7\u30fc\u30bf\u5fa9\u65e7\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3057\u3066\u3044\u3066\u9867\u5ba2\u3082\u591a\u3044\u3067\u3059\u3002\u60c5\u5831\u5de5\u5b66\u7814\u7a76\u6240\u306f\u65e5\u672c\u306e\u4e3b\u8981\u4f01\u696d\u3084\u65e5\u672c\u8d64\u5341\u5b57\u306a\u3069\u306e\u5927\u624b\u9867\u5ba2\u304b\u3089\u3082\u4fe1\u983c\u3055\u308c\u3066\u304a\u308a\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u9762\u3067\u3082\u9ad8\u3044\u8a55\u4fa1\u3092\u53d7\u3051\u3066\u3044\u307e\u3059\u3002\u5f7c\u3089\u306fIT\u30fb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5c02\u9580\u5bb6\u304c\u5e38\u99d0\u3057\u3066\u304a\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u3042\u3089\u3086\u308b\u5074\u9762\u304b\u3089\u5bfe\u5fdc\u53ef\u80fd\u3067\u3059\u3002\u6cd5\u4eba\u306e\u5834\u5408\u3001\u9867\u5ba2\u3078\u306e\u8cac\u4efb\u3092\u8003\u3048\u308b\u3068\u81ea\u529b\u3067\u306e\u5bfe\u5fdc\u306f\u30ea\u30b9\u30af\u304c\u9ad8\u3044\u305f\u3081\u3001\u30d7\u30ed\u306b\u4efb\u305b\u308b\u3053\u3068\u3092\u5f37\u304f\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u5c02\u9580\u5bb6\u306b\u4f9d\u983c\u3059\u308b\u30e1\u30ea\u30c3\u30c8\u3068\u9078\u5b9a\u57fa\u6e96<\/span><\/h3>\n<p>\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u3084\u30c7\u30fc\u30bf\u306e\u55aa\u5931\u6642\u306b\u306f\u3001\u5c02\u9580\u306e\u6280\u8853\u8005\u306b\u4f9d\u983c\u3059\u308b\u3053\u3068\u3067\u8fc5\u901f\u304b\u3064\u6b63\u78ba\u306a\u5fa9\u65e7\u304c\u53ef\u80fd\u3067\u3059\u3002\u5c02\u9580\u4f01\u696d\u306f\u9ad8\u5ea6\u306a\u6280\u8853\u3068\u8c4a\u5bcc\u306a\u7d4c\u9a13\u3092\u6301\u3061\u3001\u8907\u96d1\u306a\u969c\u5bb3\u306e\u539f\u56e0\u7a76\u660e\u3084\u30c7\u30fc\u30bf\u5fa9\u65e7\u3092\u52b9\u7387\u7684\u306b\u884c\u3044\u307e\u3059\u3002\u9078\u5b9a\u306e\u30dd\u30a4\u30f3\u30c8\u3068\u3057\u3066\u306f\u3001\u5b9f\u7e3e\u3084\u4fe1\u983c\u6027\u3001\u5bfe\u5fdc\u7bc4\u56f2\u306e\u5e83\u3055\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a8d\u8a3c\u306e\u6709\u7121\u306a\u3069\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u7279\u306b\u3001\u9577\u5e74\u306e\u5b9f\u7e3e\u3092\u6301\u3061\u3001\u591a\u6570\u306e\u4f01\u696d\u3084\u516c\u5171\u6a5f\u95a2\u304b\u3089\u652f\u6301\u3055\u308c\u3066\u3044\u308b\u4f01\u696d\u3092\u9078\u3076\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u969c\u5bb3\u767a\u751f\u6642\u306e\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u3084\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u305f\u30c8\u30e9\u30d6\u30eb\u5bfe\u5fdc\u306e\u5b9f\u4f8b<\/span><\/h3>\n<p>\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u6642\u306e\u5177\u4f53\u7684\u306a\u5bfe\u5fdc\u3068\u3057\u3066\u3001\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u3092\u4f7f\u7528\u3057\u305f\u8a3a\u65ad\u3084\u4fee\u5fa9\u4f5c\u696d\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001Linux\u74b0\u5883\u3067\u306f\u300cntpq -p\u300d\u30b3\u30de\u30f3\u30c9\u3067NTP\u30b5\u30fc\u30d0\u30fc\u306e\u72b6\u614b\u3092\u78ba\u8a8d\u3057\u305f\u308a\u3001\u300ctimedatectl\u300d\u30b3\u30de\u30f3\u30c9\u3067\u6642\u523b\u8a2d\u5b9a\u3092\u8abf\u6574\u3057\u305f\u308a\u3057\u307e\u3059\u3002Windows\u74b0\u5883\u3067\u306f\u3001\u300cw32tm \/query \/status\u300d\u3084\u300cw32tm \/resync\u300d\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u3044\u3001\u540c\u671f\u72b6\u6cc1\u3092\u628a\u63e1\u3057\u518d\u540c\u671f\u3092\u884c\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b3\u30de\u30f3\u30c9\u3092\u9069\u5207\u306b\u4f7f\u3044\u3053\u306a\u3059\u306b\u306f\u5c02\u9580\u77e5\u8b58\u304c\u5fc5\u8981\u3067\u3059\u304c\u3001\u6b63\u78ba\u306a\u8a3a\u65ad\u3068\u8fc5\u901f\u306a\u5fa9\u65e7\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u5c02\u9580\u4f01\u696d\u306e\u6280\u8853\u8005\u306f\u3053\u3046\u3057\u305f\u30b3\u30de\u30f3\u30c9\u3092\u99c6\u4f7f\u3057\u3001\u6700\u9069\u306a\u89e3\u6c7a\u7b56\u3092\u63d0\u6848\u3057\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u8907\u6570\u8981\u7d20\u306b\u3088\u308b\u89e3\u6c7a\u7b56\u3068\u305d\u306e\u6bd4\u8f03<\/span><\/h3>\n<table border='1'>\n<tr>\n<th>\u8981\u7d20<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<tr>\n<td>\u6280\u8853\u529b<\/td>\n<td>\u9ad8\u5ea6\u306a\u6280\u8853\u3068\u7d4c\u9a13\u306b\u57fa\u3065\u304f\u5bfe\u5fdc\u529b<\/td>\n<\/tr>\n<tr>\n<td>\u5bfe\u5fdc\u7bc4\u56f2<\/td>\n<td>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u304b\u3089\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u307e\u3067\u591a\u5c90\u306b\u308f\u305f\u308b\u5bfe\u5fdc\u529b<\/td>\n<\/tr>\n<tr>\n<td>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/td>\n<td>\u516c\u7684\u8a8d\u8a3c\u53d6\u5f97\u3084\u793e\u54e1\u6559\u80b2\u306b\u3088\u308b\u5b89\u5168\u6027\u78ba\u4fdd<\/td>\n<\/tr>\n<\/table>\n<p>\u3053\u308c\u3089\u306e\u8981\u7d20\u3092\u7dcf\u5408\u7684\u306b\u8a55\u4fa1\u3057\u3001\u4fe1\u983c\u3067\u304d\u308b\u5c02\u9580\u4f01\u696d\u306b\u4f9d\u983c\u3059\u308b\u3053\u3068\u304c\u6700\u826f\u3067\u3059\u3002\u81ea\u529b\u3067\u306e\u5bfe\u5fdc\u306f\u30ea\u30b9\u30af\u304c\u4f34\u3046\u305f\u3081\u3001\u6cd5\u4eba\u306e\u5834\u5408\u306f\u7279\u306b\u30d7\u30ed\u306b\u4efb\u305b\u308b\u3053\u3068\u3092\u63a8\u5968\u3057\u307e\u3059\u3002<\/p>\n<p class='mermaid_svg'><a href=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_02.svg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_02.svg\" alt=\"\u30d7\u30ed\u306b\u76f8\u8ac7\u3059\u308b\" class=\"mermaid_svg\" onerror=\"this.src='https:\/\/jouhou.main.jp\/img\/file_mssing.svg';\"><\/a><\/p>\n<p class='mermaid_caption'>\u30d7\u30ed\u306b\u76f8\u8ac7\u3059\u308b<\/p>\n<div class='round'>\n<h4>\u304a\u5ba2\u69d8\u793e\u5185\u3067\u306e\u3054\u8aac\u660e\u30fb\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9<\/h4>\n<p>\u5c02\u9580\u4f01\u696d\u3078\u306e\u4f9d\u983c\u306f\u3001\u8fc5\u901f\u304b\u3064\u78ba\u5b9f\u306a\u5fa9\u65e7\u3092\u5b9f\u73fe\u3057\u3001\u30ea\u30b9\u30af\u7ba1\u7406\u306e\u89b3\u70b9\u304b\u3089\u3082\u91cd\u8981\u3067\u3059\u3002\u8907\u96d1\u306a\u5bfe\u5fdc\u3084\u9ad8\u5ea6\u306a\u6280\u8853\u3092\u8981\u3059\u308b\u5834\u5408\u306f\u3001\u5c02\u9580\u5bb6\u306e\u652f\u63f4\u3092\u5f97\u308b\u3053\u3068\u304c\u6700\u5584\u3067\u3059\u3002<\/p>\n<\/div>\n<div class='round'>\n<h4>Perspective<\/h4>\n<p>\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u3092\u9ad8\u3081\u308b\u306b\u306f\u3001\u5c02\u9580\u4f01\u696d\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u308b\u3053\u3068\u304c\u6700\u3082\u52b9\u679c\u7684\u3067\u3059\u3002\u7279\u306b\u3001\u30c7\u30fc\u30bf\u5fa9\u65e7\u3084\u969c\u5bb3\u5bfe\u5fdc\u306e\u7d4c\u9a13\u8c4a\u5bcc\u306a\u4f01\u696d\u3092\u9078\u5b9a\u3057\u3001\u7d99\u7d9a\u7684\u306a\u76e3\u8996\u3084\u7ba1\u7406\u4f53\u5236\u3092\u6574\u3048\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<\/div>\n<\/section>\n<section id='chapter3'>\n<h2 class='subtitle'>\u4f01\u696d\u306e\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u6642\u523b\u306e\u6b63\u78ba\u6027\u78ba\u4fdd\u304c\u306a\u305c\u5fc5\u8981\u304b\u77e5\u308a\u305f\u3044<\/h2>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u6574\u5408\u6027\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u91d1\u878d\u53d6\u5f15\u3084\u76e3\u67fb\u8a3c\u8de1\u306e\u7ba1\u7406\u306b\u304a\u3044\u3066\u3001\u6642\u523b\u306e\u30ba\u30ec\u306f\u4fe1\u983c\u6027\u306e\u4f4e\u4e0b\u3084\u6cd5\u7684\u30ea\u30b9\u30af\u3092\u62db\u304f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<table border='1'>\n<tr>\n<th>\u8981\u7d20<\/th>\n<th>\u6bd4\u8f03<\/th>\n<\/tr>\n<tr>\n<td>\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u6027<\/td>\n<td>\u6b63\u78ba\u306a\u6642\u523b\u306b\u3088\u308a\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306e\u6574\u5408\u6027\u3092\u4fdd\u3061\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u8aa4\u52d5\u4f5c\u3092\u9632\u3050<\/td>\n<\/tr>\n<tr>\n<td>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/td>\n<td>\u6642\u523b\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u3044\u3068\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4fb5\u5bb3\u306e\u8ffd\u8de1\u304c\u56f0\u96e3\u306b\u306a\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u6cd5\u4ee4\u9806\u5b88<\/td>\n<td>\u76e3\u67fb\u3084\u8a3c\u62e0\u4fdd\u5168\u306b\u304a\u3044\u3066\u6b63\u78ba\u306a\u6642\u523b\u60c5\u5831\u304c\u6c42\u3081\u3089\u308c\u308b<\/td>\n<\/tr>\n<\/table>\n<p>\u307e\u305f\u3001\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u3092\u7528\u3044\u305f\u540c\u671f\u8a2d\u5b9a\u3082\u91cd\u8981\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001`ntpdate`\u3084`chrony`\u3068\u3044\u3063\u305f\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u3044\u3001\u624b\u52d5\u307e\u305f\u306f\u81ea\u52d5\u3067\u6642\u523b\u3092\u540c\u671f\u3055\u305b\u308b\u3053\u3068\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u9593\u306e\u6642\u523b\u30ba\u30ec\u3092\u6700\u5c0f\u5316\u3057\u3001\u904b\u7528\u306e\u4fe1\u983c\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3068\u4fe1\u983c\u6027\u306e\u7dad\u6301<\/span><\/h3>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3092\u4fdd\u3064\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u51e6\u7406\u3084\u30ed\u30b0\u306e\u8a18\u9332\u306b\u304a\u3044\u3066\u3001\u6642\u523b\u60c5\u5831\u304c\u6b63\u78ba\u3067\u306a\u3051\u308c\u3070\u3001\u30c7\u30fc\u30bf\u306e\u4e00\u8cab\u6027\u3084\u4fe1\u983c\u6027\u304c\u640d\u306a\u308f\u308c\u308b\u6050\u308c\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u306e\u5fa9\u65e7\u3084\u5206\u6790\u306e\u969b\u306b\u6df7\u4e71\u3092\u62db\u304d\u3001\u6700\u60aa\u306e\u5834\u5408\u6cd5\u7684\u306a\u8a3c\u62e0\u3068\u3057\u3066\u7121\u52b9\u3068\u5224\u65ad\u3055\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u9069\u5207\u306a\u6642\u523b\u540c\u671f\u3092\u884c\u3044\u3001\u5168\u30b7\u30b9\u30c6\u30e0\u3067\u4e00\u81f4\u3057\u305f\u6642\u523b\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5316\u3068\u4e0d\u6b63\u9632\u6b62<\/span><\/h3>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u89b3\u70b9\u304b\u3089\u3082\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u306e\u8ffd\u8de1\u3084\u8a3c\u62e0\u4fdd\u5168\u306b\u304a\u3044\u3066\u3001\u6b63\u78ba\u306a\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306f\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u6642\u523b\u306e\u30ba\u30ec\u304c\u3042\u308b\u3068\u3001\u30ed\u30b0\u306e\u6574\u5408\u6027\u304c\u7591\u308f\u308c\u3001\u4e8b\u4ef6\u306e\u8ffd\u8de1\u3084\u5bfe\u7b56\u304c\u9045\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u4e0d\u6b63\u64cd\u4f5c\u3084\u6539\u3056\u3093\u3092\u691c\u77e5\u3059\u308b\u305f\u3081\u306b\u3082\u3001\u4fe1\u983c\u3067\u304d\u308b\u6642\u523b\u7ba1\u7406\u306f\u9632\u5fa1\u306e\u7b2c\u4e00\u7dda\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044NTP\u30b5\u30fc\u30d0\u30fc\u3092\u7528\u3044\u305f\u6642\u523b\u540c\u671f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u9075\u5b88\u306e\u305f\u3081\u306e\u6642\u523b\u7ba1\u7406<\/span><\/h3>\n<p>\u591a\u304f\u306e\u6cd5\u898f\u5236\u3084\u696d\u754c\u57fa\u6e96\u3067\u306f\u3001\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u3068\u8a3c\u8de1\u306e\u4fdd\u6301\u304c\u6c42\u3081\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4f01\u696d\u306f\u5185\u90e8\u76e3\u67fb\u3084\u5916\u90e8\u76e3\u67fb\u306b\u304a\u3044\u3066\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u3092\u8a3c\u660e\u3067\u304d\u307e\u3059\u3002\u6cd5\u7684\u8a3c\u62e0\u3068\u3057\u3066\u306e\u4fe1\u983c\u6027\u3084\u3001\u53d6\u5f15\u8a18\u9332\u306e\u6b63\u5f53\u6027\u3092\u793a\u3059\u305f\u3081\u306b\u3082\u3001\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u6b20\u304b\u305b\u307e\u305b\u3093\u3002\u30b7\u30b9\u30c6\u30e0\u306e\u904b\u7528\u306b\u304a\u3044\u3066\u306f\u3001\u6a19\u6e96\u7684\u306aNTP\u8a2d\u5b9a\u3084\u76e3\u8996\u4f53\u5236\u3092\u6574\u5099\u3057\u3001\u6642\u523b\u306e\u30ba\u30ec\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<p class='mermaid_svg'><a href=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_03.svg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_03.svg\" alt=\"\u4f01\u696d\u306e\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u6642\u523b\u306e\u6b63\u78ba\u6027\u78ba\u4fdd\u304c\u306a\u305c\u5fc5\u8981\u304b\u77e5\u308a\u305f\u3044\" class=\"mermaid_svg\" onerror=\"this.src='https:\/\/jouhou.main.jp\/img\/file_mssing.svg';\"><\/a><\/p>\n<p class='mermaid_caption'>\u4f01\u696d\u306e\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u6642\u523b\u306e\u6b63\u78ba\u6027\u78ba\u4fdd\u304c\u306a\u305c\u5fc5\u8981\u304b\u77e5\u308a\u305f\u3044<\/p>\n<div class='round'>\n<h4>\u304a\u5ba2\u69d8\u793e\u5185\u3067\u306e\u3054\u8aac\u660e\u30fb\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9<\/h4>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u306e\u91cd\u8981\u6027\u3068\u305d\u306e\u30ea\u30b9\u30af\u3092\u7406\u89e3\u3057\u3066\u3044\u305f\u3060\u304f\u3053\u3068\u304c\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u5411\u4e0a\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u793e\u5185\u3067\u306e\u5171\u901a\u8a8d\u8b58\u3092\u6301\u3064\u3053\u3068\u3067\u3001\u904b\u7528\u4f53\u5236\u306e\u898b\u76f4\u3057\u3084\u6539\u5584\u304c\u9032\u307f\u307e\u3059\u3002<\/p>\n<\/div>\n<div class='round'>\n<h4>Perspective<\/h4>\n<p>\u707d\u5bb3\u3084\u969c\u5bb3\u6642\u306b\u304a\u3044\u3066\u3082\u6642\u523b\u306e\u6574\u5408\u6027\u3092\u78ba\u4fdd\u3059\u308b\u3053\u3068\u306f\u3001\u8fc5\u901f\u306a\u5fa9\u65e7\u3068\u8a3c\u62e0\u4fdd\u5168\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6642\u523b\u540c\u671f\u306f\u3001\u4e8b\u696d\u7d99\u7d9a\u8a08\u753b\uff08BCP\uff09\u306e\u6838\u5fc3\u8981\u7d20\u3067\u3059\u3002<\/p>\n<\/div>\n<\/section>\n<section id='chapter4'>\n<h2 class='subtitle'>\u30c7\u30fc\u30bf\u6574\u5408\u6027\u3068\u6642\u523b\u306e\u30ba\u30ec\u306e\u30ea\u30b9\u30af\u306b\u3064\u3044\u3066\u7406\u89e3\u3059\u308b<\/h2>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u904b\u7528\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u78ba\u4fdd\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u8981\u7d20\u3067\u3059\u3002\u7279\u306b\u3001\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u3084\u30c7\u30fc\u30bf\u4e0d\u6574\u5408\u306e\u539f\u56e0\u306e\u4e00\u3064\u3068\u3057\u3066\u3001\u6642\u523b\u306e\u30ba\u30ec\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u6642\u523b\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u3044\u3068\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306e\u9806\u5e8f\u3084\u6574\u5408\u6027\u304c\u5d29\u308c\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u4fe1\u983c\u6027\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u91d1\u878d\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u53d6\u5f15\u306e\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u304c\u305a\u308c\u308b\u3068\u3001\u6cd5\u7684\u8a3c\u62e0\u80fd\u529b\u3084\u76e3\u67fb\u306e\u4fe1\u983c\u6027\u304c\u640d\u306a\u308f\u308c\u308b\u6050\u308c\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30ea\u30b9\u30af\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306a\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u3053\u3068\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002\u6bd4\u8f03\u3059\u308b\u3068\u3001\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u3068\u76f4\u7d50\u3057\u3066\u304a\u308a\u3001\u30ba\u30ec\u3092\u653e\u7f6e\u3059\u308b\u3068\u91cd\u5927\u306a\u30ea\u30b9\u30af\u306b\u3064\u306a\u304c\u308b\u305f\u3081\u3001\u7279\u306b\u707d\u5bb3\u3084\u969c\u5bb3\u6642\u306e\u30ea\u30ab\u30d0\u30ea\u8a08\u753b\u306b\u304a\u3044\u3066\u3082\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u30c7\u30fc\u30bf\u4e0d\u6574\u5408\u3068\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306e\u6df7\u4e71\u4f8b<\/span><\/h3>\n<p>\u6642\u523b\u306e\u30ba\u30ec\u304c\u539f\u56e0\u3067\u30c7\u30fc\u30bf\u4e0d\u6574\u5408\u304c\u767a\u751f\u3059\u308b\u3068\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306e\u51e6\u7406\u9806\u5e8f\u3084\u6574\u5408\u6027\u306b\u6df7\u4e71\u3092\u304d\u305f\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u91d1\u878d\u53d6\u5f15\u3084\u5728\u5eab\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u6b63\u78ba\u306a\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u304c\u306a\u3051\u308c\u3070\u53d6\u5f15\u306e\u9806\u5e8f\u304c\u4e0d\u660e\u78ba\u3068\u306a\u308a\u3001\u7d50\u679c\u3068\u3057\u3066\u4e8c\u91cd\u51e6\u7406\u3084\u8aa4\u3063\u305f\u5728\u5eab\u6570\u304c\u8a18\u9332\u3055\u308c\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u3060\u3051\u3067\u306a\u304f\u3001\u6cd5\u7684\u306a\u8a3c\u62e0\u80fd\u529b\u3082\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u5e38\u306b\u6b63\u78ba\u306a\u6642\u523b\u3092\u7dad\u6301\u3057\u3001\u5185\u90e8\u76e3\u67fb\u3084\u30c8\u30e9\u30d6\u30eb\u5bfe\u5fdc\u306b\u5099\u3048\u308b\u3053\u3068\u304c\u3001\u3053\u3046\u3057\u305f\u30ea\u30b9\u30af\u306e\u56de\u907f\u306b\u6709\u52b9\u3067\u3059\u3002\u6bd4\u8f03\u7684\u3001\u6642\u523b\u306e\u30ba\u30ec\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u6839\u5e79\u3092\u63fa\u308b\u304c\u3059\u554f\u984c\u3067\u3042\u308a\u3001\u4e8b\u524d\u306e\u4e88\u9632\u3068\u76e3\u8996\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u76e3\u67fb\u8a3c\u8de1\u306e\u4e0d\u4fe1\u6027\u3068\u6cd5\u7684\u30ea\u30b9\u30af<\/span><\/h3>\n<p>\u6b63\u78ba\u306a\u76e3\u67fb\u8a3c\u8de1\u306f\u3001\u6cd5\u7684\u8a3c\u62e0\u3084\u5185\u90e8\u8abf\u67fb\u306b\u304a\u3044\u3066\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u60c5\u5831\u6e90\u3068\u306a\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u6642\u523b\u306e\u30ba\u30ec\u304c\u751f\u3058\u308b\u3068\u3001\u8a3c\u8de1\u306e\u6574\u5408\u6027\u304c\u7591\u308f\u308c\u3001\u6cd5\u7684\u30ea\u30b9\u30af\u3084\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u9055\u53cd\u306e\u53ef\u80fd\u6027\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u96fb\u5b50\u53d6\u5f15\u3084\u5951\u7d04\u8a18\u9332\u306b\u304a\u3044\u3066\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u304c\u6b63\u78ba\u3067\u306a\u3044\u5834\u5408\u3001\u8a3c\u62e0\u80fd\u529b\u304c\u554f\u308f\u308c\u308b\u30b1\u30fc\u30b9\u3082\u3042\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u4f01\u696d\u306f\u6642\u523b\u7ba1\u7406\u3092\u5fb9\u5e95\u3057\u3001\u9069\u5207\u306a\u540c\u671f\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u3067\u3001\u8a3c\u8de1\u306e\u4fe1\u983c\u6027\u3092\u78ba\u4fdd\u3057\u3001\u6cd5\u7684\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u6bd4\u8f03\u3059\u308b\u3068\u3001\u4fe1\u983c\u6027\u306e\u4f4e\u3044\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306f\u4f01\u696d\u306e\u4fe1\u7528\u306b\u3082\u76f4\u7d50\u3057\u3001\u9577\u671f\u7684\u306a\u30ea\u30b9\u30af\u7ba1\u7406\u306b\u304a\u3044\u3066\u3082\u91cd\u8981\u3067\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u30b7\u30b9\u30c6\u30e0\u30a8\u30e9\u30fc\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4fb5\u5bb3\u306e\u4e8b\u4f8b<\/span><\/h3>\n<p>\u6642\u523b\u306e\u30ba\u30ec\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u30a8\u30e9\u30fc\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4fb5\u5bb3\u306e\u539f\u56e0\u3068\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u653b\u6483\u8005\u304c\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u64cd\u4f5c\u3057\u3066\u30b7\u30b9\u30c6\u30e0\u306e\u6319\u52d5\u3092\u8aa4\u8a8d\u3055\u305b\u305f\u308a\u3001\u30ed\u30b0\u306e\u6539\u3056\u3093\u3092\u884c\u3046\u30b1\u30fc\u30b9\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u306e\u8ffd\u8de1\u3084\u8a3c\u62e0\u53ce\u96c6\u304c\u56f0\u96e3\u306b\u306a\u308a\u3001\u88ab\u5bb3\u306e\u62e1\u5927\u3084\u5bfe\u5fdc\u9045\u308c\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u6642\u306b\u6642\u523b\u540c\u671f\u306e\u4e0d\u5099\u304c\u539f\u56e0\u3067\u5fa9\u65e7\u4f5c\u696d\u304c\u9045\u308c\u308b\u30b1\u30fc\u30b9\u3082\u3042\u308a\u307e\u3059\u3002\u3053\u3046\u3057\u305f\u30ea\u30b9\u30af\u3092\u672a\u7136\u306b\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044NTP\u30b5\u30fc\u30d0\u30fc\u306e\u904b\u7528\u3068\u76e3\u8996\u4f53\u5236\u306e\u6574\u5099\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u6bd4\u8f03\u7684\u3001\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30b7\u30b9\u30c6\u30e0\u5b89\u5b9a\u6027\u306e\u4e21\u9762\u3067\u6700\u3082\u91cd\u8981\u306a\u57fa\u76e4\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p class='mermaid_svg'><a href=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_04.svg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_04.svg\" alt=\"\u30c7\u30fc\u30bf\u6574\u5408\u6027\u3068\u6642\u523b\u306e\u30ba\u30ec\u306e\u30ea\u30b9\u30af\u306b\u3064\u3044\u3066\u7406\u89e3\u3059\u308b\" class=\"mermaid_svg\" onerror=\"this.src='https:\/\/jouhou.main.jp\/img\/file_mssing.svg';\"><\/a><\/p>\n<p class='mermaid_caption'>\u30c7\u30fc\u30bf\u6574\u5408\u6027\u3068\u6642\u523b\u306e\u30ba\u30ec\u306e\u30ea\u30b9\u30af\u306b\u3064\u3044\u3066\u7406\u89e3\u3059\u308b<\/p>\n<div class='round'>\n<h4>\u304a\u5ba2\u69d8\u793e\u5185\u3067\u306e\u3054\u8aac\u660e\u30fb\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9<\/h4>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306e\u91cd\u8981\u6027\u3068\u30ea\u30b9\u30af\u3092\u7406\u89e3\u3057\u3001\u5168\u54e1\u3067\u5171\u6709\u3059\u308b\u3053\u3068\u304c\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u5411\u4e0a\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u707d\u5bb3\u6642\u3084\u969c\u5bb3\u767a\u751f\u6642\u306e\u5bfe\u5fdc\u8a08\u753b\u306b\u3082\u6642\u523b\u306e\u6574\u5408\u6027\u306f\u6b20\u304b\u305b\u307e\u305b\u3093\u3002<\/p>\n<\/div>\n<div class='round'>\n<h4>Perspective<\/h4>\n<p>\u30b7\u30b9\u30c6\u30e0\u306e\u6839\u5e79\u3092\u652f\u3048\u308b\u6642\u523b\u7ba1\u7406\u306f\u3001\u5358\u306a\u308b\u6280\u8853\u7684\u8ab2\u984c\u3060\u3051\u3067\u306a\u304f\u3001\u4f01\u696d\u306e\u4fe1\u7528\u3084\u6cd5\u7684\u8cac\u4efb\u3068\u3082\u5bc6\u63a5\u306b\u95a2\u308f\u3063\u3066\u3044\u307e\u3059\u3002\u9069\u5207\u306a\u5bfe\u7b56\u3068\u7d99\u7d9a\u7684\u306a\u76e3\u8996\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<\/div>\n<\/section>\n<section id='chapter5'>\n<h2 class='subtitle'>\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u6642\u306bNTP\u306e\u8a2d\u5b9a\u30a8\u30e9\u30fc\u304c\u539f\u56e0\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u305f\u3044<\/h2>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u7a3c\u50cd\u3084\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u7dad\u6301\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u7279\u306b\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u3084\u7570\u5e38\u767a\u751f\u6642\u306b\u306f\u3001\u539f\u56e0\u306e\u7279\u5b9a\u3068\u8fc5\u901f\u306a\u5bfe\u5fdc\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002NTP\uff08Network Time Protocol\uff09\u8a2d\u5b9a\u306e\u8aa4\u308a\u3084\u4e0d\u9069\u5207\u306a\u69cb\u6210\u306f\u3001\u610f\u56f3\u3057\u306a\u3044\u6642\u523b\u305a\u308c\u3084\u540c\u671f\u5931\u6557\u3092\u5f15\u304d\u8d77\u3053\u3057\u3001\u7d50\u679c\u3068\u3057\u3066\u30b7\u30b9\u30c6\u30e0\u306e\u6b63\u5e38\u52d5\u4f5c\u3092\u59a8\u3052\u308b\u8981\u56e0\u3068\u306a\u308a\u5f97\u307e\u3059\u3002\u969c\u5bb3\u306e\u539f\u56e0\u3092\u6b63\u78ba\u306b\u628a\u63e1\u3057\u3001\u9069\u5207\u306a\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u3053\u3068\u304c\u3001\u4e8b\u696d\u7d99\u7d9a\u8a08\u753b\uff08BCP\uff09\u306e\u89b3\u70b9\u304b\u3089\u3082\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u7ba1\u7406\u8005\u306f\u3001\u969c\u5bb3\u767a\u751f\u6642\u306bNTP\u306e\u8a2d\u5b9a\u5185\u5bb9\u3084\u540c\u671f\u72b6\u614b\u3092\u78ba\u8a8d\u3057\u3001\u539f\u56e0\u7279\u5b9a\u306e\u30dd\u30a4\u30f3\u30c8\u3084\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u624b\u9806\u3092\u7406\u89e3\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8fc5\u901f\u306a\u5fa9\u65e7\u3068\u696d\u52d9\u306e\u7d99\u7d9a\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u969c\u5bb3\u539f\u56e0\u306e\u7279\u5b9a\u3068\u8a3a\u65ad\u30dd\u30a4\u30f3\u30c8<\/span><\/h3>\n<p>\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u6642\u306bNTP\u8a2d\u5b9a\u30a8\u30e9\u30fc\u304c\u539f\u56e0\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u307e\u305a\u7570\u5e38\u306e\u767a\u751f\u7b87\u6240\u3084\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u628a\u63e1\u3057\u307e\u3059\u3002\u6b21\u306b\u3001NTP\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u901a\u4fe1\u72b6\u6cc1\u3084\u540c\u671f\u5c65\u6b74\u3092\u78ba\u8a8d\u3057\u3001\u8a2d\u5b9a\u5185\u5bb9\u306b\u8aa4\u308a\u3084\u4e0d\u5099\u304c\u306a\u3044\u304b\u3092\u8a3a\u65ad\u3057\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001NTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30ed\u30b0\u3084\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30de\u30f3\u30c9\u3092\u7528\u3044\u3066\u3001\u540c\u671f\u306e\u6210\u529f\u30fb\u5931\u6557\u306e\u5c65\u6b74\u3092\u8abf\u67fb\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u8a2d\u5b9a\u3055\u308c\u305fNTP\u30b5\u30fc\u30d0\u30fc\u306e\u30a2\u30c9\u30ec\u30b9\u3084\u30dd\u30fc\u30c8\u756a\u53f7\u3001\u8a8d\u8a3c\u8a2d\u5b9a\u306a\u3069\u3082\u78ba\u8a8d\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002\u3053\u3046\u3057\u305f\u8a3a\u65ad\u3092\u901a\u3058\u3066\u3001\u969c\u5bb3\u306e\u6839\u672c\u539f\u56e0\u3092\u660e\u3089\u304b\u306b\u3057\u3001\u9069\u5207\u306a\u5bfe\u5fdc\u7b56\u3092\u691c\u8a0e\u3057\u307e\u3059\u3002\u6cd5\u4eba\u306e\u5834\u5408\u3001\u9867\u5ba2\u3078\u306e\u8cac\u4efb\u3092\u8003\u3048\u308b\u3068\u30d7\u30ed\u306b\u4efb\u305b\u308b\u4e8b\u3092\u52e7\u3081\u308b\u3053\u3068\u3082\u91cd\u8981\u3067\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u540c\u671f\u30a8\u30e9\u30fc\u306e\u78ba\u8a8d\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/span><\/h3>\n<p>NTP\u540c\u671f\u30a8\u30e9\u30fc\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3001\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u304b\u3089\u306e\u78ba\u8a8d\u304c\u52b9\u679c\u7684\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001Windows\u3067\u306f`w32tm \/query \/status`\u30b3\u30de\u30f3\u30c9\u3092\u7528\u3044\u3066\u540c\u671f\u72b6\u614b\u3092\u78ba\u8a8d\u3057\u3001Linux\u3067\u306f`ntpq -p`\u3084`timedatectl`\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u3063\u3066\u8a73\u7d30\u60c5\u5831\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b3\u30de\u30f3\u30c9\u306b\u3088\u308a\u3001\u540c\u671f\u3057\u3066\u3044\u308b\u30b5\u30fc\u30d0\u30fc\u306e\u72b6\u614b\u3084\u9045\u5ef6\u6642\u9593\u3001\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u306a\u3069\u3092\u628a\u63e1\u3067\u304d\u307e\u3059\u3002\u30a8\u30e9\u30fc\u304c\u691c\u51fa\u3055\u308c\u305f\u5834\u5408\u306f\u3001\u8a2d\u5b9a\u30df\u30b9\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u906e\u65ad\u3001\u8a8d\u8a3c\u30a8\u30e9\u30fc\u7b49\u3092\u7591\u3044\u3001\u8a2d\u5b9a\u306e\u898b\u76f4\u3057\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u306e\u6539\u5584\u3092\u884c\u3044\u307e\u3059\u3002\u8907\u6570\u306e\u8981\u7d20\u3092\u78ba\u8a8d\u3057\u306a\u304c\u3089\u6bb5\u968e\u7684\u306b\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c8\u3092\u9032\u3081\u308b\u3053\u3068\u304c\u3001\u8fc5\u901f\u306a\u554f\u984c\u89e3\u6c7a\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>NTP\u8a2d\u5b9a\u306e\u898b\u76f4\u3057\u3068\u6700\u9069\u5316<\/span><\/h3>\n<p>NTP\u8a2d\u5b9a\u306e\u898b\u76f4\u3057\u306b\u306f\u3001\u307e\u305a\u6b63\u3057\u3044\u30b5\u30fc\u30d0\u30fc\u30a2\u30c9\u30ec\u30b9\u306e\u767b\u9332\u3068\u8a8d\u8a3c\u8a2d\u5b9a\u306e\u78ba\u8a8d\u304c\u5fc5\u8981\u3067\u3059\u3002\u52d5\u4f5c\u78ba\u8a8d\u306b\u306f`ntpdate`\u30b3\u30de\u30f3\u30c9\u3084`chrony`\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u898b\u76f4\u3057\u3001\u540c\u671f\u306e\u983b\u5ea6\u3084\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u5024\u3092\u8abf\u6574\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u9045\u5ef6\u3084\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9\u3092\u6700\u5c0f\u5316\u3059\u308b\u305f\u3081\u306b\u3001\u9069\u5207\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u69cb\u6210\u3084\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u8a2d\u5b9a\u3092\u884c\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u5197\u9577\u306aNTP\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u5b9a\u3057\u3001\u30d5\u30a7\u30fc\u30eb\u30aa\u30fc\u30d0\u30fc\u3067\u304d\u308b\u4f53\u5236\u3092\u6574\u3048\u308b\u3053\u3068\u3067\u3001\u4fe1\u983c\u6027\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002\u5b9a\u671f\u7684\u306a\u76e3\u8996\u3084\u30ed\u30b0\u5206\u6790\u3092\u884c\u3044\u3001\u5e38\u306b\u6700\u9069\u306a\u72b6\u614b\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u304c\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u904b\u7528\u3068\u4e8b\u696d\u7d99\u7d9a\u306b\u5bc4\u4e0e\u3057\u307e\u3059\u3002<\/p>\n<p class='mermaid_svg'><a href=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_05.svg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_05.svg\" alt=\"\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u6642\u306bNTP\u306e\u8a2d\u5b9a\u30a8\u30e9\u30fc\u304c\u539f\u56e0\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u305f\u3044\" class=\"mermaid_svg\" onerror=\"this.src='https:\/\/jouhou.main.jp\/img\/file_mssing.svg';\"><\/a><\/p>\n<p class='mermaid_caption'>\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u6642\u306bNTP\u306e\u8a2d\u5b9a\u30a8\u30e9\u30fc\u304c\u539f\u56e0\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u305f\u3044<\/p>\n<div class='round'>\n<h4>\u304a\u5ba2\u69d8\u793e\u5185\u3067\u306e\u3054\u8aac\u660e\u30fb\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9<\/h4>\n<p>\u30b7\u30b9\u30c6\u30e0\u306e\u6642\u523b\u540c\u671f\u306e\u91cd\u8981\u6027\u3068\u3001\u969c\u5bb3\u6642\u306e\u539f\u56e0\u7279\u5b9a\u306e\u30dd\u30a4\u30f3\u30c8\u306b\u3064\u3044\u3066\u7406\u89e3\u3092\u6df1\u3081\u3066\u3044\u305f\u3060\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u6b63\u78ba\u306a\u60c5\u5831\u5171\u6709\u306b\u3088\u308a\u3001\u8fc5\u901f\u306a\u5bfe\u5fdc\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n<div class='round'>\n<h4>Perspective<\/h4>\n<p>NTP\u306e\u8a2d\u5b9a\u3084\u76e3\u8996\u306f\u7d99\u7d9a\u7684\u306a\u53d6\u308a\u7d44\u307f\u304c\u5fc5\u8981\u3067\u3059\u3002\u969c\u5bb3\u767a\u751f\u6642\u306b\u306f\u51b7\u9759\u306b\u539f\u56e0\u3092\u5207\u308a\u5206\u3051\u3001\u5c02\u9580\u7684\u306a\u30b5\u30dd\u30fc\u30c8\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u4e8b\u696d\u306e\u5b89\u5b9a\u904b\u55b6\u3092\u78ba\u4fdd\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n<\/section>\n<section id='chapter6'>\n<h2 class='subtitle'>\u6b63\u78ba\u306a\u6642\u523b\u304c\u306a\u3051\u308c\u3070\u30c7\u30fc\u30bf\u5fa9\u65e7\u3084\u30ea\u30ab\u30d0\u30ea\u306b\u3069\u306e\u3088\u3046\u306a\u5f71\u97ff\u304c\u51fa\u308b\u304b\u77e5\u308a\u305f\u3044<\/h2>\n<p>\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u3084\u707d\u5bb3\u6642\u306b\u304a\u3044\u3066\u3001\u6b63\u78ba\u306a\u6642\u523b\u60c5\u5831\u306f\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3068\u5fa9\u65e7\u4f5c\u696d\u306e\u6210\u529f\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002\u3082\u3057\u6642\u523b\u304c\u305a\u308c\u3066\u3044\u305f\u308a\u4fe1\u983c\u6027\u306e\u4f4e\u3044\u540c\u671f\u304c\u884c\u308f\u308c\u3066\u3044\u308b\u3068\u3001\u30c7\u30fc\u30bf\u5fa9\u65e7\u306e\u969b\u306b\u4e0d\u6574\u5408\u304c\u751f\u3058\u305f\u308a\u3001\u30c8\u30e9\u30d6\u30eb\u306e\u7279\u5b9a\u3084\u89e3\u6c7a\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30b7\u30b9\u30c6\u30e0\u30ed\u30b0\u3084\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u60c5\u5831\u304c\u6b63\u78ba\u306a\u6642\u523b\u3068\u4e00\u81f4\u3057\u3066\u3044\u306a\u3044\u3068\u3001\u539f\u56e0\u7a76\u660e\u3084\u5fa9\u65e7\u8a08\u753b\u306e\u7acb\u6848\u304c\u96e3\u3057\u304f\u306a\u308a\u307e\u3059\u3002\u3053\u3046\u3057\u305f\u80cc\u666f\u304b\u3089\u3001NTP\u306b\u3088\u308b\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u3001\u707d\u5bb3\u3084\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u6642\u306e\u8fc5\u901f\u306a\u5bfe\u5fdc\u3092\u53ef\u80fd\u306b\u3057\u3001\u4e8b\u696d\u7d99\u7d9a\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u8981\u7d20\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u30ea\u30ab\u30d0\u30ea\u8a08\u753b\u306b\u304a\u3051\u308b\u6642\u523b\u60c5\u5831\u306e\u91cd\u8981\u6027<\/span><\/h3>\n<p>\u30c7\u30fc\u30bf\u5fa9\u65e7\u3084\u30ea\u30ab\u30d0\u30ea\u8a08\u753b\u306b\u304a\u3044\u3066\u3001\u6b63\u78ba\u306a\u6642\u523b\u60c5\u5831\u306f\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u6b63\u78ba\u306a\u6642\u523b\u304c\u8a18\u9332\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u30c1\u30a7\u30c3\u30af\u3084\u5c65\u6b74\u8ffd\u8de1\u304c\u56f0\u96e3\u306b\u306a\u308a\u3001\u5fa9\u65e7\u4f5c\u696d\u306e\u6b63\u78ba\u6027\u304c\u640d\u306a\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u969c\u5bb3\u767a\u751f\u524d\u5f8c\u306e\u30ed\u30b0\u3084\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306e\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u304c\u4fe1\u983c\u3067\u304d\u308b\u3082\u306e\u3067\u306a\u3051\u308c\u3070\u3001\u3069\u306e\u30c7\u30fc\u30bf\u3092\u512a\u5148\u3057\u3066\u5fa9\u5143\u3059\u3079\u304d\u304b\u5224\u65ad\u3067\u304d\u307e\u305b\u3093\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u6642\u523b\u540c\u671f\u3092\u5fb9\u5e95\u3057\u3001\u6b63\u78ba\u306a\u8a18\u9332\u3092\u4fdd\u6301\u3059\u308b\u3053\u3068\u306f\u3001\u8fc5\u901f\u304b\u3064\u6b63\u78ba\u306a\u5fa9\u65e7\u306e\u7b2c\u4e00\u6b69\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u6b63\u78ba\u306a\u6642\u523b\u304c\u5fa9\u65e7\u4f5c\u696d\u3092\u5186\u6ed1\u306b\u9032\u3081\u308b\u7406\u7531<\/span><\/h3>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u60c5\u5831\u304c\u3042\u308c\u3070\u3001\u5fa9\u65e7\u4f5c\u696d\u306f\u8a08\u753b\u7684\u304b\u3064\u52b9\u7387\u7684\u306b\u9032\u3081\u3089\u308c\u307e\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u306e\u30ed\u30b0\u3084\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u8a18\u9332\u304c\u6b63\u78ba\u306a\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3068\u3068\u3082\u306b\u4fdd\u7ba1\u3055\u308c\u3066\u3044\u308c\u3070\u3001\u969c\u5bb3\u306e\u539f\u56e0\u7279\u5b9a\u3084\u4fee\u5fa9\u306e\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u304c\u5bb9\u6613\u3068\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u8907\u6570\u306e\u30b5\u30fc\u30d0\u30fc\u9593\u3067\u306e\u30c7\u30fc\u30bf\u4e0d\u6574\u5408\u3084\u9045\u5ef6\u3092\u65e9\u671f\u306b\u767a\u898b\u3067\u304d\u308b\u305f\u3081\u3001\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u307e\u3059\u3002\u307e\u305f\u3001\u5fa9\u65e7\u4f5c\u696d\u4e2d\u306e\u8abf\u6574\u3084\u7ba1\u7406\u3082\u30b9\u30e0\u30fc\u30ba\u306b\u306a\u308a\u3001\u4e8b\u696d\u7d99\u7d9a\u8a08\u753b\uff08BCP\uff09\u306e\u5b9f\u73fe\u306b\u5927\u304d\u304f\u5bc4\u4e0e\u3057\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u6642\u523b\u30ba\u30ec\u306b\u3088\u308b\u30c7\u30fc\u30bf\u306e\u4e0d\u6574\u5408\u30ea\u30b9\u30af<\/span><\/h3>\n<p>\u6642\u523b\u304c\u305a\u308c\u3066\u3044\u308b\u3068\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3084\u4e00\u8cab\u6027\u304c\u640d\u306a\u308f\u308c\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u91d1\u878d\u53d6\u5f15\u3084\u533b\u7642\u60c5\u5831\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u304c\u6cd5\u7684\u306a\u8a3c\u62e0\u3084\u904b\u7528\u4e0a\u306e\u4fe1\u983c\u6027\u3092\u62c5\u4fdd\u3057\u307e\u3059\u3002\u6642\u523b\u30ba\u30ec\u306b\u3088\u3063\u3066\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306e\u9806\u5e8f\u3084\u5c65\u6b74\u304c\u4e71\u308c\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u8aa4\u52d5\u4f5c\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4fb5\u5bb3\u306b\u7e4b\u304c\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u3001\u8907\u6570\u62e0\u70b9\u306e\u30b7\u30b9\u30c6\u30e0\u3092\u9023\u643a\u3055\u305b\u3066\u3044\u308b\u5834\u5408\u3001\u6642\u523b\u306e\u30ba\u30ec\u306f\u5168\u4f53\u306e\u4fe1\u983c\u6027\u3092\u8457\u3057\u304f\u4f4e\u4e0b\u3055\u305b\u308b\u305f\u3081\u3001\u5e38\u306b\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u3092\u5b9f\u73fe\u3059\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<p class='mermaid_svg'><a href=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_06.svg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_06.svg\" alt=\"\u6b63\u78ba\u306a\u6642\u523b\u304c\u306a\u3051\u308c\u3070\u30c7\u30fc\u30bf\u5fa9\u65e7\u3084\u30ea\u30ab\u30d0\u30ea\u306b\u3069\u306e\u3088\u3046\u306a\u5f71\u97ff\u304c\u51fa\u308b\u304b\u77e5\u308a\u305f\u3044\" class=\"mermaid_svg\" onerror=\"this.src='https:\/\/jouhou.main.jp\/img\/file_mssing.svg';\"><\/a><\/p>\n<p class='mermaid_caption'>\u6b63\u78ba\u306a\u6642\u523b\u304c\u306a\u3051\u308c\u3070\u30c7\u30fc\u30bf\u5fa9\u65e7\u3084\u30ea\u30ab\u30d0\u30ea\u306b\u3069\u306e\u3088\u3046\u306a\u5f71\u97ff\u304c\u51fa\u308b\u304b\u77e5\u308a\u305f\u3044<\/p>\n<div class='round'>\n<h4>\u304a\u5ba2\u69d8\u793e\u5185\u3067\u306e\u3054\u8aac\u660e\u30fb\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9<\/h4>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u3068\u5fa9\u65e7\u306e\u52b9\u7387\u6027\u3092\u9ad8\u3081\u308b\u91cd\u8981\u306a\u8981\u7d20\u3067\u3059\u3002\u6700\u65b0\u306e\u6280\u8853\u3068\u9069\u5207\u306a\u904b\u7528\u4f53\u5236\u3092\u6574\u3048\u308b\u3053\u3068\u304c\u3001\u707d\u5bb3\u5bfe\u5fdc\u3084\u4e8b\u696d\u7d99\u7d9a\u306e\u9375\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n<div class='round'>\n<h4>Perspective<\/h4>\n<p>\u6642\u523b\u306e\u4fe1\u983c\u6027\u306f\u5358\u306a\u308b\u6280\u8853\u7684\u306a\u554f\u984c\u3067\u306f\u306a\u304f\u3001\u4f01\u696d\u306e\u4fe1\u7528\u3084\u6cd5\u7684\u8cac\u4efb\u3068\u3082\u5bc6\u63a5\u306b\u95a2\u308f\u3063\u3066\u3044\u307e\u3059\u3002\u7d99\u7d9a\u7684\u306a\u898b\u76f4\u3057\u3068\u7ba1\u7406\u4f53\u5236\u306e\u5f37\u5316\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<\/div>\n<\/section>\n<section id='chapter7'>\n<h2 class='subtitle'>NTP\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u3044\u5834\u5408\u306e\u5177\u4f53\u7684\u306a\u30c8\u30e9\u30d6\u30eb\u4f8b\u3092\u77e5\u308a\u305f\u3044<\/h2>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u904b\u7528\u306b\u3068\u3063\u3066\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002\u3057\u304b\u3057\u3001NTP\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u4e0b\u3059\u308b\u3068\u3055\u307e\u3056\u307e\u306a\u30c8\u30e9\u30d6\u30eb\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u6642\u523b\u306e\u30ba\u30ec\u306b\u3088\u308b\u30b7\u30b9\u30c6\u30e0\u30a8\u30e9\u30fc\u3084\u30c7\u30fc\u30bf\u306e\u4e0d\u6574\u5408\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u306e\u5897\u5927\u306a\u3069\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u554f\u984c\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u3084\u60c5\u5831\u6f0f\u6d29\u306e\u539f\u56e0\u3068\u306a\u308a\u5f97\u308b\u305f\u3081\u3001\u65e9\u671f\u306e\u5bfe\u51e6\u3084\u4e88\u9632\u7b56\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002\u7279\u306bNTP\u306e\u8a2d\u5b9a\u3084\u904b\u7528\u304c\u4e0d\u9069\u5207\u306a\u5834\u5408\u3001\u6b63\u78ba\u306a\u6642\u523b\u306e\u7dad\u6301\u304c\u56f0\u96e3\u3068\u306a\u308a\u3001\u7d50\u679c\u3068\u3057\u3066\u696d\u52d9\u306b\u652f\u969c\u3092\u304d\u305f\u3059\u30b1\u30fc\u30b9\u3082\u898b\u3089\u308c\u307e\u3059\u3002\u7d4c\u55b6\u5c64\u306b\u3068\u3063\u3066\u306f\u3001\u3053\u3046\u3057\u305f\u30ea\u30b9\u30af\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306a\u7ba1\u7406\u4f53\u5236\u3092\u6574\u3048\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u4eca\u56de\u306f\u3001NTP\u306e\u4fe1\u983c\u6027\u4f4e\u4e0b\u306b\u3088\u308b\u5177\u4f53\u7684\u306a\u30c8\u30e9\u30d6\u30eb\u4f8b\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3001\u5bfe\u7b56\u306e\u5fc5\u8981\u6027\u3092\u4f1d\u3048\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u6642\u523b\u540c\u671f\u5931\u6557\u306b\u3088\u308b\u30b7\u30b9\u30c6\u30e0\u30a8\u30e9\u30fc<\/span><\/h3>\n<p>NTP\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u4e0b\u3059\u308b\u3068\u3001\u30b5\u30fc\u30d0\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u9593\u3067\u306e\u6642\u523b\u540c\u671f\u304c\u6b63\u3057\u304f\u884c\u308f\u308c\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3084\u30ed\u30b0\u306e\u8a18\u9332\u306b\u30ba\u30ec\u304c\u751f\u3058\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u6574\u5408\u6027\u304c\u5d29\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u91d1\u878d\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u53d6\u5f15\u8a18\u9332\u306e\u6642\u523b\u304c\u305a\u308c\u308b\u3068\u3001\u4e0d\u6b63\u3084\u4e0d\u6b63\u78ba\u306a\u51e6\u7406\u306e\u7591\u3044\u304c\u751f\u3058\u3001\u904b\u7528\u4e0a\u306e\u5927\u304d\u306a\u554f\u984c\u3068\u306a\u308a\u307e\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u30a8\u30e9\u30fc\u3084\u4e0d\u5177\u5408\u306e\u767a\u898b\u3084\u4fee\u6b63\u3082\u9045\u308c\u3001\u7d50\u679c\u7684\u306b\u696d\u52d9\u306e\u9045\u5ef6\u3084\u4fe1\u983c\u6027\u306e\u4f4e\u4e0b\u3092\u62db\u304d\u307e\u3059\u3002\u7d4c\u55b6\u5c64\u306f\u3053\u3046\u3057\u305f\u30a8\u30e9\u30fc\u304c\u4f01\u696d\u306e\u4fe1\u7528\u3084\u904b\u55b6\u306b\u4e0e\u3048\u308b\u5f71\u97ff\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306a\u6642\u523b\u7ba1\u7406\u306e\u91cd\u8981\u6027\u3092\u8a8d\u8b58\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u306e\u5897\u5927<\/span><\/h3>\n<p>\u4fe1\u983c\u6027\u306e\u4f4e\u3044NTP\u74b0\u5883\u3067\u306f\u3001\u60aa\u610f\u306e\u3042\u308b\u653b\u6483\u8005\u304c\u6642\u523b\u60c5\u5831\u3092\u6539\u3056\u3093\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u6839\u5e79\u3092\u63fa\u308b\u304c\u3059\u30ea\u30b9\u30af\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u6642\u523b\u306e\u30ba\u30ec\u3092\u5229\u7528\u3057\u305f\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3084\u8a3c\u62e0\u6539\u3056\u3093\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a8d\u8a3c\u306e\u7a81\u7834\u306a\u3069\u304c\u60f3\u5b9a\u3055\u308c\u307e\u3059\u3002\u7279\u306b\u3001\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u57fa\u6e96\u3068\u3057\u305f\u76e3\u67fb\u3084\u8a3c\u62e0\u306e\u4fe1\u983c\u6027\u304c\u6c42\u3081\u3089\u308c\u308b\u5834\u9762\u3067\u306f\u3001\u6642\u523b\u306e\u6b63\u78ba\u6027\u304c\u640d\u306a\u308f\u308c\u308b\u3068\u6cd5\u7684\u30fb\u898f\u5236\u4e0a\u306e\u554f\u984c\u3082\u751f\u3058\u307e\u3059\u3002\u7d4c\u55b6\u5c64\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u6642\u523b\u4fe1\u983c\u6027\u3092\u78ba\u4fdd\u3057\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u5316\u3059\u308b\u305f\u3081\u306e\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u904b\u7528\u6df7\u4e71\u3068\u696d\u52d9\u505c\u6ede<\/span><\/h3>\n<p>NTP\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u304f\u306a\u308b\u3068\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u540c\u671f\u304c\u53d6\u308c\u305a\u3001\u904b\u7528\u306b\u6df7\u4e71\u3092\u304d\u305f\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u8907\u6570\u306e\u30b5\u30fc\u30d0\u3084\u30b5\u30fc\u30d3\u30b9\u9593\u3067\u306e\u6642\u523b\u30ba\u30ec\u306b\u3088\u308a\u3001\u9023\u643a\u4f5c\u696d\u3084\u30d0\u30c3\u30c1\u51e6\u7406\u304c\u5931\u6557\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u696d\u52d9\u306e\u9045\u5ef6\u3084\u505c\u6b62\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3078\u306e\u5f71\u97ff\u3082\u51fa\u3066\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u969c\u5bb3\u5bfe\u5fdc\u3084\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3082\u8907\u96d1\u5316\u3057\u3001\u89e3\u6c7a\u307e\u3067\u306e\u6642\u9593\u304c\u5ef6\u3073\u308b\u30b1\u30fc\u30b9\u3082\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u300124\u6642\u9593\u4f53\u5236\u306e\u904b\u7528\u304c\u6c42\u3081\u3089\u308c\u308b\u4f01\u696d\u306b\u3068\u3063\u3066\u306f\u3001\u3053\u3046\u3057\u305f\u904b\u7528\u306e\u4e71\u308c\u306f\u5927\u304d\u306a\u30ea\u30b9\u30af\u3068\u306a\u308a\u307e\u3059\u3002\u7d4c\u55b6\u5c64\u306f\u3001\u3053\u3046\u3057\u305f\u30ea\u30b9\u30af\u3092\u8a8d\u8b58\u3057\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6642\u523b\u540c\u671f\u4f53\u5236\u306e\u6574\u5099\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<p class='mermaid_svg'><a href=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_07.svg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_07.svg\" alt=\"NTP\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u3044\u5834\u5408\u306e\u5177\u4f53\u7684\u306a\u30c8\u30e9\u30d6\u30eb\u4f8b\u3092\u77e5\u308a\u305f\u3044\" class=\"mermaid_svg\" onerror=\"this.src='https:\/\/jouhou.main.jp\/img\/file_mssing.svg';\"><\/a><\/p>\n<p class='mermaid_caption'>NTP\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u3044\u5834\u5408\u306e\u5177\u4f53\u7684\u306a\u30c8\u30e9\u30d6\u30eb\u4f8b\u3092\u77e5\u308a\u305f\u3044<\/p>\n<div class='round'>\n<h4>\u304a\u5ba2\u69d8\u793e\u5185\u3067\u306e\u3054\u8aac\u660e\u30fb\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9<\/h4>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306e\u91cd\u8981\u6027\u3092\u7406\u89e3\u3057\u3001\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u4f53\u5236\u6574\u5099\u304c\u5fc5\u8981\u3067\u3059\u3002\u7d4c\u55b6\u5c64\u3068\u6280\u8853\u62c5\u5f53\u8005\u9593\u3067\u306e\u60c5\u5831\u5171\u6709\u3068\u5354\u529b\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<\/div>\n<div class='round'>\n<h4>Perspective<\/h4>\n<p>\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u3068\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u3001NTP\u306e\u4fe1\u983c\u6027\u5411\u4e0a\u3068\u7d99\u7d9a\u7684\u306a\u76e3\u8996\u30fb\u7ba1\u7406\u3092\u63a8\u9032\u3059\u3079\u304d\u3067\u3059\u3002\u707d\u5bb3\u3084\u969c\u5bb3\u6642\u306e\u5bfe\u5fdc\u3082\u8996\u91ce\u306b\u5165\u308c\u305f\u8a08\u753b\u3092\u7acb\u3066\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<\/div>\n<\/section>\n<section id='chapter8'>\n<h2 class='subtitle'>NTP\u30b5\u30fc\u30d0\u30fc\u306e\u9078\u5b9a\u57fa\u6e96\u3068\u4fe1\u983c\u6027\u8a55\u4fa1\u30dd\u30a4\u30f3\u30c8\u3092\u7406\u89e3\u3057\u305f\u3044<\/h2>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u6027\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u78ba\u4fdd\u306b\u304a\u3044\u3066\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u7279\u306bNTP\uff08Network Time Protocol\uff09\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3084\u4f01\u696d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u6b63\u78ba\u306a\u6642\u523b\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306e\u6a19\u6e96\u7684\u306a\u4ed5\u7d44\u307f\u3068\u3057\u3066\u5e83\u304f\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001NTP\u30b5\u30fc\u30d0\u30fc\u306e\u9078\u5b9a\u3084\u904b\u7528\u7ba1\u7406\u3092\u8aa4\u308b\u3068\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u91cd\u5927\u306a\u5f71\u97ff\u3092\u53ca\u307c\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u4fe1\u983c\u6027\u306e\u4f4e\u3044NTP\u30b5\u30fc\u30d0\u30fc\u3092\u5229\u7528\u3057\u305f\u5834\u5408\u3001\u6642\u523b\u306e\u305a\u308c\u3084\u4e0d\u6b63\u78ba\u3055\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3084\u76e3\u67fb\u8a3c\u8de1\u306e\u4fe1\u983c\u6027\u304c\u640d\u306a\u308f\u308c\u308b\u6050\u308c\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u4fe1\u983c\u3067\u304d\u308bNTP\u30b5\u30fc\u30d0\u30fc\u306e\u9078\u3073\u65b9\u3084\u904b\u7528\u306b\u5fc5\u8981\u306a\u8a55\u4fa1\u30dd\u30a4\u30f3\u30c8\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306a\u76e3\u8996\u4f53\u5236\u3092\u6574\u5099\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u7279\u306b\u6cd5\u4eba\u3067\u306f\u3001\u9867\u5ba2\u3084\u53d6\u5f15\u5148\u306b\u5bfe\u3057\u3066\u8cac\u4efb\u3092\u6301\u3064\u7acb\u5834\u3068\u3057\u3066\u3001\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u3092\u5fb9\u5e95\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u6bd4\u8f03\u8868\u306f\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044NTP\u30b5\u30fc\u30d0\u30fc\u306e\u9078\u5b9a\u57fa\u6e96\u3068\u305d\u306e\u904b\u7528\u30dd\u30a4\u30f3\u30c8\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u6574\u7406\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7d4c\u55b6\u5c64\u3084\u6280\u8853\u62c5\u5f53\u8005\u304c\u5171\u901a\u7406\u89e3\u3092\u6301\u3061\u3001\u9069\u5207\u306a\u5224\u65ad\u3092\u884c\u3048\u308b\u3088\u3046\u306b\u306a\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u4fe1\u983c\u3067\u304d\u308bNTP\u30b5\u30fc\u30d0\u30fc\u306e\u9078\u3073\u65b9<\/span><\/h3>\n<p>NTP\u30b5\u30fc\u30d0\u30fc\u306e\u9078\u5b9a\u306b\u304a\u3044\u3066\u306f\u3001\u307e\u305a\u305d\u306e\u4fe1\u983c\u6027\u3068\u6b63\u78ba\u6027\u3092\u8a55\u4fa1\u3059\u308b\u3053\u3068\u304c\u57fa\u672c\u3067\u3059\u3002\u4fe1\u983c\u3067\u304d\u308b\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u5168\u56fd\u7684\u306a\u6a19\u6e96\u6642\u3092\u63d0\u4f9b\u3059\u308b\u516c\u5171\u306eNTP\u30b5\u30fc\u30d3\u30b9\u3084\u3001GPS\u3092\u57fa\u76e4\u3068\u3057\u305f\u5916\u90e8\u540c\u671f\u6a5f\u80fd\u3092\u6301\u3064\u30b5\u30fc\u30d0\u30fc\u3067\u3059\u3002\u9078\u5b9a\u306e\u30dd\u30a4\u30f3\u30c8\u3068\u3057\u3066\u306f\u3001\u904b\u7528\u8005\u306e\u4fe1\u983c\u6027\u3001\u904e\u53bb\u306e\u7a3c\u50cd\u5b9f\u7e3e\u3001\u305d\u3057\u3066\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306e\u6709\u7121\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u8a8d\u8a3c\u4ed8\u304d\u306eNTP\u30b5\u30fc\u30d0\u30fc\u3084\u3001\u6697\u53f7\u5316\u901a\u4fe1\u3092\u884c\u3046\u30b5\u30fc\u30d0\u30fc\u3092\u9078\u3076\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u306e\u6539\u3056\u3093\u3084\u306a\u308a\u3059\u307e\u3057\u3092\u9632\u6b62\u3067\u304d\u307e\u3059\u3002\u6cd5\u4eba\u306b\u3068\u3063\u3066\u306f\u3001\u5916\u90e8\u4f9d\u5b58\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3001\u5185\u90e8\u3067\u7ba1\u7406\u53ef\u80fd\u306a\u30b5\u30fc\u30d0\u30fc\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u3082\u691c\u8a0e\u3059\u3079\u304d\u3067\u3059\u3002\u5b89\u5168\u6027\u3068\u6b63\u78ba\u6027\u306e\u4e21\u7acb\u3092\u610f\u8b58\u3057\u3001\u9069\u5207\u306a\u8a55\u4fa1\u57fa\u6e96\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3001\u9577\u671f\u7684\u306a\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u904b\u7528\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u904b\u7528\u306b\u5fc5\u8981\u306a\u8a55\u4fa1\u30dd\u30a4\u30f3\u30c8<\/span><\/h3>\n<p>NTP\u30b5\u30fc\u30d0\u30fc\u306e\u904b\u7528\u306b\u304a\u3044\u3066\u306f\u3001\u5b9a\u671f\u7684\u306a\u72b6\u614b\u76e3\u8996\u3068\u30ed\u30b0\u7ba1\u7406\u304c\u91cd\u8981\u3067\u3059\u3002\u8a55\u4fa1\u30dd\u30a4\u30f3\u30c8\u3068\u3057\u3066\u306f\u3001\u307e\u305a\u30b5\u30fc\u30d0\u30fc\u306e\u7a3c\u50cd\u7387\u3068\u5fdc\u7b54\u901f\u5ea6\u3001\u6642\u523b\u306e\u305a\u308c\u306e\u8a31\u5bb9\u7bc4\u56f2\u3092\u5b9a\u671f\u7684\u306b\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u6b21\u306b\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u9762\u3067\u306f\u3001\u901a\u4fe1\u306e\u6697\u53f7\u5316\u3084\u8a8d\u8a3c\u6a5f\u80fd\u306e\u6709\u7121\u3092\u78ba\u8a8d\u3057\u3001\u4e0d\u5be9\u306a\u30a2\u30af\u30bb\u30b9\u3084\u7570\u5e38\u306a\u52d5\u4f5c\u304c\u306a\u3044\u304b\u76e3\u8996\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u5197\u9577\u5316\u3084\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u4f53\u5236\u3092\u6574\u5099\u3057\u3001\u969c\u5bb3\u767a\u751f\u6642\u3082\u7d99\u7d9a\u7684\u306b\u6b63\u78ba\u306a\u6642\u523b\u3092\u63d0\u4f9b\u3067\u304d\u308b\u4ed5\u7d44\u307f\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u8a55\u4fa1\u30dd\u30a4\u30f3\u30c8\u3092\u7d99\u7d9a\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u8a2d\u5b9a\u306e\u898b\u76f4\u3057\u3084\u6539\u5584\u3092\u884c\u3046\u3053\u3068\u304c\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u5411\u4e0a\u306b\u5bc4\u4e0e\u3057\u307e\u3059\u3002\u6cd5\u4eba\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u904b\u7528\u8a55\u4fa1\u3092\u5b9a\u671f\u7684\u306b\u884c\u3044\u3001\u5185\u90e8\u57fa\u6e96\u306b\u57fa\u3065\u3044\u305f\u7ba1\u7406\u4f53\u5236\u3092\u6574\u3048\u308b\u3053\u3068\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u7d99\u7d9a\u7684\u306a\u76e3\u8996\u3068\u7ba1\u7406\u306e\u91cd\u8981\u6027<\/span><\/h3>\n<p>NTP\u30b5\u30fc\u30d0\u30fc\u306e\u4fe1\u983c\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u7d99\u7d9a\u7684\u306a\u76e3\u8996\u3068\u7ba1\u7406\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u76e3\u8996\u306b\u306f\u3001\u5c02\u7528\u306e\u76e3\u8996\u30c4\u30fc\u30eb\u3084\u30ed\u30b0\u5206\u6790\u3092\u6d3b\u7528\u3057\u3001\u6642\u523b\u306e\u305a\u308c\u3084\u7570\u5e38\u3092\u65e9\u671f\u306b\u691c\u77e5\u3067\u304d\u308b\u4f53\u5236\u3092\u6574\u3048\u307e\u3059\u3002\u7279\u306b\u3001GPS\u3084\u539f\u5b50\u6642\u8a08\u3068\u9023\u643a\u3057\u305f\u9ad8\u7cbe\u5ea6\u540c\u671f\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u5b9a\u671f\u7684\u306a\u52d5\u4f5c\u78ba\u8a8d\u3068\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u5fc5\u8981\u3067\u3059\u3002\u3055\u3089\u306b\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u72b6\u614b\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a2d\u5b9a\u3082\u5b9a\u671f\u7684\u306b\u898b\u76f4\u3057\u3001\u4e0d\u9069\u5207\u306a\u30a2\u30af\u30bb\u30b9\u3084\u8a2d\u5b9a\u5909\u66f4\u3092\u9632\u6b62\u3057\u307e\u3059\u3002\u7d44\u7e54\u5185\u306e\u8cac\u4efb\u8005\u3084\u904b\u7528\u62c5\u5f53\u8005\u306f\u3001\u3053\u308c\u3089\u306e\u7ba1\u7406\u30dd\u30a4\u30f3\u30c8\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306a\u904b\u7528\u624b\u9806\u3092\u7b56\u5b9a\u30fb\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u5b89\u5b9a\u6027\u3068\u4fe1\u983c\u6027\u3092\u9ad8\u3081\u308b\u9375\u3068\u306a\u308a\u307e\u3059\u3002\u6cd5\u4eba\u306b\u304a\u3044\u3066\u306f\u3001\u3053\u308c\u3089\u306e\u76e3\u8996\u4f53\u5236\u3092\u7dad\u6301\u3057\u3001\u5e38\u306b\u6700\u65b0\u306e\u72b6\u614b\u3092\u4fdd\u3064\u3053\u3068\u304c\u3001\u707d\u5bb3\u3084\u969c\u5bb3\u6642\u306e\u8fc5\u901f\u306a\u5fa9\u65e7\u3068\u9867\u5ba2\u4fe1\u983c\u306e\u5411\u4e0a\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002<\/p>\n<p class='mermaid_svg'><a href=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_08.svg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_08.svg\" alt=\"NTP\u30b5\u30fc\u30d0\u30fc\u306e\u9078\u5b9a\u57fa\u6e96\u3068\u4fe1\u983c\u6027\u8a55\u4fa1\u30dd\u30a4\u30f3\u30c8\u3092\u7406\u89e3\u3057\u305f\u3044\" class=\"mermaid_svg\" onerror=\"this.src='https:\/\/jouhou.main.jp\/img\/file_mssing.svg';\"><\/a><\/p>\n<p class='mermaid_caption'>NTP\u30b5\u30fc\u30d0\u30fc\u306e\u9078\u5b9a\u57fa\u6e96\u3068\u4fe1\u983c\u6027\u8a55\u4fa1\u30dd\u30a4\u30f3\u30c8\u3092\u7406\u89e3\u3057\u305f\u3044<\/p>\n<div class='round'>\n<h4>\u304a\u5ba2\u69d8\u793e\u5185\u3067\u306e\u3054\u8aac\u660e\u30fb\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9<\/h4>\n<p>\u4fe1\u983c\u6027\u306e\u9ad8\u3044NTP\u30b5\u30fc\u30d0\u30fc\u306e\u9078\u5b9a\u3068\u7d99\u7d9a\u7ba1\u7406\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u904b\u7528\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u78ba\u4fdd\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002\u7d4c\u55b6\u5c64\u3068\u6280\u8853\u8005\u304c\u5171\u901a\u7406\u89e3\u3092\u6301\u3061\u3001\u8cac\u4efb\u3092\u6301\u3063\u3066\u904b\u7528\u3092\u9032\u3081\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<\/div>\n<div class='round'>\n<h4>Perspective<\/h4>\n<p>\u9069\u5207\u306aNTP\u30b5\u30fc\u30d0\u30fc\u306e\u9078\u5b9a\u3068\u904b\u7528\u306f\u3001\u4f01\u696d\u306e\u4fe1\u983c\u6027\u3092\u9ad8\u3081\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u707d\u5bb3\u6642\u3084\u969c\u5bb3\u767a\u751f\u6642\u306e\u8fc5\u901f\u306a\u5bfe\u5fdc\u306b\u3082\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u5c02\u9580\u5bb6\u306e\u52a9\u8a00\u3092\u5f97\u306a\u304c\u3089\u7d99\u7d9a\u7684\u306a\u6539\u5584\u3092\u5fc3\u639b\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n<\/section>\n<section id='chapter9'>\n<h2 class='subtitle'>\u4e8b\u696d\u7d99\u7d9a\u8a08\u753b\uff08BCP\uff09\u306b\u304a\u3044\u3066\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u304c\u679c\u305f\u3059\u5f79\u5272\u3092\u77e5\u308a\u305f\u3044<\/h2>\n<p>\u707d\u5bb3\u3084\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u304c\u767a\u751f\u3057\u305f\u969b\u306b\u3001\u4f01\u696d\u306e\u4e8b\u696d\u7d99\u7d9a\u306b\u3068\u3063\u3066\u6700\u3082\u91cd\u8981\u306a\u8981\u7d20\u306e\u4e00\u3064\u304c\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u3067\u3059\u3002\u7279\u306b\u3001\u6642\u523b\u540c\u671f\u304c\u305a\u308c\u3066\u3044\u308b\u3068\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3084\u30c8\u30e9\u30d6\u30eb\u306e\u539f\u56e0\u7279\u5b9a\u3001\u5fa9\u65e7\u4f5c\u696d\u306e\u52b9\u7387\u5316\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u53ca\u307c\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u6642\u306b\u6b63\u78ba\u306a\u6642\u523b\u60c5\u5831\u304c\u306a\u3051\u308c\u3070\u3001\u30c7\u30fc\u30bf\u306e\u5fa9\u65e7\u3084\u5c65\u6b74\u306e\u8ffd\u8de1\u304c\u56f0\u96e3\u3068\u306a\u308a\u3001\u5fa9\u65e7\u4f5c\u696d\u304c\u9045\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u8868\u306b\u3066\u6bd4\u8f03\u3059\u308b\u3068\u3001\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u304c\u3042\u308b\u5834\u5408\u3068\u306a\u3044\u5834\u5408\u306e\u9055\u3044\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u707d\u5bb3\u6642\u306e\u6642\u523b\u7ba1\u7406\u306e\u91cd\u8981\u6027<\/span><\/h3>\n<p>\u707d\u5bb3\u6642\u306b\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3084\u30c7\u30fc\u30bf\u304c\u6563\u9038\u3057\u305f\u308a\u3001\u6642\u523b\u306e\u30ba\u30ec\u304c\u539f\u56e0\u3067\u30c8\u30e9\u30d6\u30eb\u304c\u62e1\u5927\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u306f\u3001\u5f71\u97ff\u7bc4\u56f2\u306e\u8fc5\u901f\u306a\u628a\u63e1\u3084\u5fa9\u65e7\u8a08\u753b\u306e\u7acb\u6848\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u88ab\u5bb3\u72b6\u6cc1\u3084\u5fa9\u65e7\u306e\u9032\u6357\u3092\u6642\u7cfb\u5217\u3067\u6b63\u78ba\u306b\u628a\u63e1\u3059\u308b\u3053\u3068\u3067\u3001\u9069\u5207\u306a\u5bfe\u5fdc\u7b56\u3092\u8b1b\u3058\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002\u8868\u306b\u793a\u3059\u3068\u3001\u6642\u523b\u306e\u4fe1\u983c\u6027\u304c\u9ad8\u3044\u4f01\u696d\u306f\u3001\u707d\u5bb3\u6642\u306e\u5bfe\u5fdc\u306e\u8fc5\u901f\u5316\u3084\u5fa9\u65e7\u306e\u7cbe\u5ea6\u5411\u4e0a\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>BCP\u306b\u304a\u3051\u308b\u6642\u523b\u306e\u6574\u5408\u6027\u78ba\u4fdd\u7b56<\/span><\/h3>\n<p>BCP\uff08\u4e8b\u696d\u7d99\u7d9a\u8a08\u753b\uff09\u306e\u7b56\u5b9a\u306b\u3042\u305f\u3063\u3066\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u7a3c\u50cd\u72b6\u6cc1\u3084\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306e\u6574\u5408\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u3001\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u304c\u5fc5\u8981\u3067\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001NTP\u30b5\u30fc\u30d0\u30fc\u3092\u5229\u7528\u3057\u305f\u6642\u523b\u540c\u671f\u3084\u3001GPS\u540c\u671f\u6a5f\u5668\u306e\u5c0e\u5165\u3001\u5197\u9577\u5316\u306b\u3088\u308b\u4fe1\u983c\u6027\u5411\u4e0a\u306a\u3069\u306e\u5bfe\u7b56\u304c\u884c\u308f\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u975e\u5e38\u6642\u3067\u3082\u6642\u523b\u306e\u30ba\u30ec\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3084\u76e3\u67fb\u8a3c\u8de1\u306e\u4fe1\u983c\u6027\u3092\u7dad\u6301\u3067\u304d\u307e\u3059\u3002\u6bd4\u8f03\u8868\u3092\u4f5c\u6210\u3059\u308b\u3068\u3001\u9069\u5207\u306a\u6642\u523b\u540c\u671f\u5bfe\u7b56\u3092\u8b1b\u3058\u3066\u3044\u308b\u4f01\u696d\u306f\u3001\u5fa9\u65e7\u306e\u52b9\u7387\u5316\u3068\u30ea\u30b9\u30af\u4f4e\u6e1b\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u6642\u523b\u540c\u671f\u3068\u5fa9\u65e7\u306e\u9023\u643a<\/span><\/h3>\n<p>\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u3084\u707d\u5bb3\u5f8c\u306e\u5fa9\u65e7\u4f5c\u696d\u306b\u304a\u3044\u3066\u306f\u3001\u6642\u523b\u540c\u671f\u3068\u9023\u643a\u3057\u305f\u60c5\u5831\u7ba1\u7406\u304c\u91cd\u8981\u3067\u3059\u3002\u6b63\u78ba\u306a\u6642\u523b\u60c5\u5831\u3092\u57fa\u306b\u3001\u30c7\u30fc\u30bf\u306e\u5fa9\u65e7\u30fb\u30ea\u30ab\u30d0\u30ea\u3084\u30ed\u30b0\u306e\u89e3\u6790\u3092\u884c\u3046\u3068\u3001\u539f\u56e0\u7a76\u660e\u3084\u5bfe\u5fdc\u7b56\u306e\u7b56\u5b9a\u304c\u8fc5\u901f\u306b\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u6642\u523b\u306e\u30ba\u30ec\u3092\u88dc\u6b63\u3057\u306a\u304c\u3089\u5fa9\u65e7\u4f5c\u696d\u3092\u9032\u3081\u308b\u3053\u3068\u3067\u3001\u8aa4\u3063\u305f\u64cd\u4f5c\u3084\u30c7\u30fc\u30bf\u306e\u4e0d\u6574\u5408\u3092\u9632\u3050\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u6bd4\u8f03\u8868\u306b\u793a\u3059\u3068\u3001\u6642\u523b\u306e\u4fe1\u983c\u6027\u304c\u9ad8\u3044\u74b0\u5883\u3067\u306f\u5fa9\u65e7\u4f5c\u696d\u306e\u7cbe\u5ea6\u3068\u30b9\u30d4\u30fc\u30c9\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n<p class='mermaid_svg'><a href=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_09.svg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_09.svg\" alt=\"\u4e8b\u696d\u7d99\u7d9a\u8a08\u753b\uff08BCP\uff09\u306b\u304a\u3044\u3066\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u304c\u679c\u305f\u3059\u5f79\u5272\u3092\u77e5\u308a\u305f\u3044\" class=\"mermaid_svg\" onerror=\"this.src='https:\/\/jouhou.main.jp\/img\/file_mssing.svg';\"><\/a><\/p>\n<p class='mermaid_caption'>\u4e8b\u696d\u7d99\u7d9a\u8a08\u753b\uff08BCP\uff09\u306b\u304a\u3044\u3066\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u304c\u679c\u305f\u3059\u5f79\u5272\u3092\u77e5\u308a\u305f\u3044<\/p>\n<div class='round'>\n<h4>\u304a\u5ba2\u69d8\u793e\u5185\u3067\u306e\u3054\u8aac\u660e\u30fb\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9<\/h4>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u306f\u3001\u707d\u5bb3\u3084\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u6642\u306e\u8fc5\u901f\u306a\u5bfe\u5fdc\u306b\u6b20\u304b\u305b\u307e\u305b\u3093\u3002\u793e\u54e1\u306e\u7406\u89e3\u3068\u5354\u529b\u3092\u5f97\u308b\u305f\u3081\u306b\u306f\u3001\u6642\u523b\u306e\u4fe1\u983c\u6027\u78ba\u4fdd\u304c\u3044\u304b\u306b\u91cd\u8981\u304b\u3092\u5171\u6709\u3059\u308b\u3053\u3068\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<\/div>\n<div class='round'>\n<h4>Perspective<\/h4>\n<p>\u4f01\u696d\u306e\u30ea\u30b9\u30af\u30de\u30cd\u30b8\u30e1\u30f3\u30c8\u306b\u304a\u3044\u3066\u3001\u6642\u523b\u306e\u4fe1\u983c\u6027\u306f\u9632\u707d\u3068\u4e8b\u696d\u7d99\u7d9a\u306e\u57fa\u76e4\u3067\u3059\u3002\u9069\u5207\u306a\u6642\u523b\u540c\u671f\u3092\u5c0e\u5165\u3057\u3001\u65e5\u5e38\u304b\u3089\u7ba1\u7406\u4f53\u5236\u3092\u6574\u3048\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<\/div>\n<\/section>\n<section id='chapter10'>\n<h2 class='subtitle'>\u6642\u523b\u306e\u4fe1\u983c\u6027\u78ba\u4fdd\u306b\u5fc5\u8981\u306a\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3068\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5177\u4f53\u7684\u5bfe\u7b56\u3092\u5b66\u3073\u305f\u3044<\/h2>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u904b\u7528\u3068\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u7dad\u6301\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u7279\u306b\u91cd\u8981\u306a\u30b7\u30b9\u30c6\u30e0\u3084\u707d\u5bb3\u5bfe\u7b56\u3092\u8003\u3048\u308b\u3068\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6642\u523b\u7ba1\u7406\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001NTP\uff08Network Time Protocol\uff09\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3084\u30a4\u30f3\u30c8\u30e9\u30cd\u30c3\u30c8\u3092\u901a\u3058\u3066\u6b63\u78ba\u306a\u6642\u523b\u3092\u540c\u671f\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u304c\u3001\u305d\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u3044\u5834\u5408\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u8aa4\u52d5\u4f5c\u3084\u30c7\u30fc\u30bf\u306e\u4e0d\u6574\u5408\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u6bd4\u8f03\u8868\u3067\u306f\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3068\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5bfe\u7b56\u4f8b\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3001\u3069\u306e\u3088\u3046\u306a\u53d6\u308a\u7d44\u307f\u304c\u52b9\u679c\u7684\u304b\u3092\u7406\u89e3\u3057\u3066\u3044\u305f\u3060\u3051\u307e\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u3084BCP\uff08\u4e8b\u696d\u7d99\u7d9a\u8a08\u753b\uff09\u306b\u304a\u3044\u3066\u3082\u3001\u6642\u523b\u306e\u6b63\u78ba\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u9069\u5207\u306a\u8a2d\u5099\u3068\u8a2d\u5b9a\u306e\u6700\u9069\u5316\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4f01\u696d\u306f\u707d\u5bb3\u6642\u3084\u969c\u5bb3\u767a\u751f\u6642\u3067\u3082\u4e00\u8cab\u3057\u305f\u6642\u523b\u7ba1\u7406\u3092\u7dad\u6301\u3057\u3001\u8fc5\u901f\u306a\u5fa9\u65e7\u3068\u5b89\u5168\u306a\u904b\u7528\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>GPS\u540c\u671f\u6a5f\u5668\u306e\u5c0e\u5165\u3068\u8a2d\u5b9a<\/span><\/h3>\n<p>GPS\uff08Global Positioning System\uff09\u540c\u671f\u6a5f\u5668\u306f\u3001\u975e\u5e38\u306b\u9ad8\u3044\u6b63\u78ba\u6027\u3092\u6301\u3064\u6642\u523b\u6e90\u3068\u3057\u3066\u4f4d\u7f6e\u4ed8\u3051\u3089\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30c7\u30d0\u30a4\u30b9\u306f\u3001\u885b\u661f\u304b\u3089\u306e\u4fe1\u53f7\u3092\u53d7\u4fe1\u3057\u3066\u6b63\u78ba\u306a\u6642\u523b\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u3001\u4f01\u696d\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3084\u30b5\u30fc\u30d0\u306b\u76f4\u63a5\u63a5\u7d9a\u3057\u3066\u6642\u523b\u540c\u671f\u3092\u884c\u3044\u307e\u3059\u3002\u5c0e\u5165\u6642\u306b\u306f\u3001\u5c02\u7528\u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3092\u8a2d\u7f6e\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3084\u30b5\u30fc\u30d0\u3068\u306e\u9023\u643a\u8a2d\u5b9a\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u6bd4\u8f03\u7684\u30b3\u30b9\u30c8\u306f\u9ad8\u3081\u3067\u3059\u304c\u3001\u6700\u3082\u6b63\u78ba\u3067\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6642\u523b\u540c\u671f\u3092\u5b9f\u73fe\u3067\u304d\u308b\u305f\u3081\u3001\u91d1\u878d\u3084\u533b\u7642\u306a\u3069\u9ad8\u7cbe\u5ea6\u3092\u6c42\u3081\u3089\u308c\u308b\u30b7\u30b9\u30c6\u30e0\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u8a2d\u5b9a\u3084\u904b\u7528\u306b\u306f\u5c02\u9580\u77e5\u8b58\u304c\u5fc5\u8981\u3067\u3059\u304c\u3001\u4e00\u5ea6\u5c0e\u5165\u3059\u308c\u3070\u9577\u671f\u7684\u306b\u5b89\u5b9a\u3057\u305f\u6642\u523b\u7ba1\u7406\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u8a2d\u5b9a\u306e\u6700\u9069\u5316<\/span><\/h3>\n<p>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u5074\u3067\u306e\u8a2d\u5b9a\u6700\u9069\u5316\u306f\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306b\u4f9d\u5b58\u305b\u305a\u306b\u6642\u523b\u306e\u4fe1\u983c\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u91cd\u8981\u306a\u624b\u6bb5\u3067\u3059\u3002NTP\u30b5\u30fc\u30d0\u30fc\u306e\u8a2d\u5b9a\u3084\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u540c\u671f\u8a2d\u5b9a\u3092\u9069\u5207\u306b\u884c\u3046\u3053\u3068\u3067\u3001\u6642\u523b\u306e\u30ba\u30ec\u3084\u8aa4\u5dee\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001NTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u8abf\u6574\u3084\u3001\u8907\u6570\u306e\u4fe1\u983c\u3067\u304d\u308bNTP\u30b5\u30fc\u30d0\u30fc\u3092\u6307\u5b9a\u3057\u3066\u5197\u9577\u5316\u3092\u56f3\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3068\u3057\u3066\u8a8d\u8a3c\u8a2d\u5b9a\u3084\u6697\u53f7\u5316\u3082\u4f75\u7528\u3057\u3001\u5916\u90e8\u304b\u3089\u306e\u4e0d\u6b63\u306a\u5e72\u6e09\u3092\u9632\u6b62\u3057\u307e\u3059\u3002CLI\uff08\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff09\u3092\u7528\u3044\u305f\u8a2d\u5b9a\u4f8b\u3082\u591a\u304f\u3042\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u7ba1\u7406\u8005\u304c\u76f4\u63a5\u64cd\u4f5c\u3057\u3066\u6700\u9069\u5316\u3092\u884c\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u4e00\u8cab\u6027\u3068\u4fe1\u983c\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3 class='section-title'><span>\u5197\u9577\u5316\u3068\u76e3\u8996\u4f53\u5236\u306e\u69cb\u7bc9<\/span><\/h3>\n<p>\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6642\u523b\u540c\u671f\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u5197\u9577\u5316\u3068\u7d99\u7d9a\u7684\u306a\u76e3\u8996\u304c\u6b20\u304b\u305b\u307e\u305b\u3093\u3002\u8907\u6570\u306eNTP\u30b5\u30fc\u30d0\u30fc\u3092\u5c0e\u5165\u3057\u3001\u3069\u308c\u304b\u306b\u969c\u5bb3\u304c\u767a\u751f\u3057\u3066\u3082\u4ed6\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u540c\u671f\u3092\u7d9a\u3051\u3089\u308c\u308b\u4ed5\u7d44\u307f\u3092\u6574\u3048\u307e\u3059\u3002\u307e\u305f\u3001\u76e3\u8996\u30c4\u30fc\u30eb\u3084\u30ed\u30b0\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u3092\u5c0e\u5165\u3057\u3001\u6642\u523b\u540c\u671f\u306e\u72b6\u614b\u3092\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u76e3\u8996\u3059\u308b\u3053\u3068\u3082\u91cd\u8981\u3067\u3059\u3002\u969c\u5bb3\u3084\u7570\u5e38\u3092\u65e9\u671f\u306b\u691c\u77e5\u3057\u3001\u8fc5\u901f\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u4f53\u5236\u3092\u6574\u3048\u308b\u3053\u3068\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u3084\u30c7\u30fc\u30bf\u306e\u4e0d\u6574\u5408\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u5316\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u707d\u5bb3\u3084\u969c\u5bb3\u306e\u969b\u306b\u3082\u3001\u6b63\u78ba\u306a\u6642\u523b\u3092\u7dad\u6301\u3057\u7d9a\u3051\u308b\u3053\u3068\u304c\u53ef\u80fd\u3068\u306a\u308a\u3001\u4e8b\u696d\u7d99\u7d9a\u6027\u3092\u78ba\u4fdd\u3067\u304d\u307e\u3059\u3002<\/p>\n<p class='mermaid_svg'><a href=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_10.svg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/jouhou.main.jp\/img\/20251212173901043_10.svg\" alt=\"\u6642\u523b\u306e\u4fe1\u983c\u6027\u78ba\u4fdd\u306b\u5fc5\u8981\u306a\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3068\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5177\u4f53\u7684\u5bfe\u7b56\u3092\u5b66\u3073\u305f\u3044\" class=\"mermaid_svg\" onerror=\"this.src='https:\/\/jouhou.main.jp\/img\/file_mssing.svg';\"><\/a><\/p>\n<p class='mermaid_caption'>\u6642\u523b\u306e\u4fe1\u983c\u6027\u78ba\u4fdd\u306b\u5fc5\u8981\u306a\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3068\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5177\u4f53\u7684\u5bfe\u7b56\u3092\u5b66\u3073\u305f\u3044<\/p>\n<div class='round'>\n<h4>\u304a\u5ba2\u69d8\u793e\u5185\u3067\u306e\u3054\u8aac\u660e\u30fb\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9<\/h4>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u7dad\u6301\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3068\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u9069\u5207\u306a\u5bfe\u7b56\u306b\u3088\u308a\u3001\u707d\u5bb3\u3084\u969c\u5bb3\u6642\u3067\u3082\u5b89\u5b9a\u3057\u305f\u904b\u7528\u3092\u7d99\u7d9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n<div class='round'>\n<h4>Perspective<\/h4>\n<p>\u4f01\u696d\u306b\u3068\u3063\u3066\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6642\u523b\u540c\u671f\u306f\u30ea\u30b9\u30af\u7ba1\u7406\u3068\u6cd5\u4ee4\u9075\u5b88\u306e\u89b3\u70b9\u304b\u3089\u3082\u91cd\u8981\u3067\u3059\u3002\u9069\u5207\u306a\u8a2d\u5099\u3068\u904b\u7528\u4f53\u5236\u3092\u6574\u3048\u308b\u3053\u3068\u3067\u3001\u9577\u671f\u7684\u306a\u4e8b\u696d\u7d99\u7d9a\u3068\u5b89\u5168\u306a\u30b7\u30b9\u30c6\u30e0\u904b\u7528\u3092\u4fc3\u9032\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n<\/section>\n<section id='chapter11'>\n<h2 class='subtitle'>\u4f01\u696d\u306e\u6cd5\u4ee4\u3084\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u306b\u304a\u3044\u3066NTP\u306e\u9069\u6b63\u904b\u7528\u304c\u6c42\u3081\u3089\u308c\u308b\u7406\u7531\u3092\u7406\u89e3\u3057\u305f\u3044<\/h2>\n<p>\u6b63\u78ba\u306a\u6642\u523b\u7ba1\u7406\u306f\u3001\u4f01\u696d\u306e\u6cd5\u4ee4\u9075\u5b88\u3084\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u306e\u89b3\u70b9\u304b\u3089\u3082\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002\u7279\u306b\u3001\u8a3c\u62e0\u306e\u4fe1\u983c\u6027\u3084\u53d6\u5f15\u8a18\u9332\u306e\u6b63\u78ba\u6027\u304c\u6c42\u3081\u3089\u308c\u308b\u5834\u9762\u3067\u306f\u3001\u6642\u523b\u306e\u4fe1\u983c\u6027\u304c\u6cd5\u7684\u8a3c\u62e0\u3068\u3057\u3066\u8a8d\u3081\u3089\u308c\u308b\u304b\u3069\u3046\u304b\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002NTP\uff08Network Time Protocol\uff09\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3084\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u901a\u3058\u3066\u6b63\u78ba\u306a\u6642\u523b\u3092\u914d\u4fe1\u3057\u307e\u3059\u304c\u3001\u305d\u306e\u904b\u7528\u3084\u7ba1\u7406\u306b\u4e0d\u5099\u304c\u3042\u308b\u3068\u3001\u6642\u523b\u60c5\u5831\u306b\u4e0d\u6574\u5408\u304c\u751f\u3058\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8a3c\u62e0\u3068\u3057\u3066\u306e\u4fa1\u5024\u304c\u7591\u554f\u8996\u3055\u308c\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u6cd5\u7684\u306a\u8cac\u4efb\u3084\u884c\u653f\u6307\u5c0e\u306e\u5bfe\u8c61\u3068\u306a\u308b\u53ef\u80fd\u6027\u3082\u51fa\u3066\u304d\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u9069\u6b63\u306aNTP\u904b\u7528\u3068\u3001\u305d\u306e\u7ba1\u7406\u4f53\u5236\u306e\u69cb\u7bc9\u306f\u3001\u4f01\u696d\u306e\u4fe1\u983c\u6027\u7dad\u6301\u3084\u6cd5\u7684\u30ea\u30b9\u30af\u56de\u907f\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<h3 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class='round'>\n<h4>Perspective<\/h4>\n<p>\u6cd5\u4ee4\u3084\u898f\u5236\u306b\u9069\u5408\u3057\u305f\u6642\u523b\u7ba1\u7406\u4f53\u5236\u306e\u6574\u5099\u306f\u3001\u9577\u671f\u7684\u306a\u4f01\u696d\u306e\u4fe1\u7528\u3068\u30ea\u30b9\u30af\u7ba1\u7406\u306b\u304a\u3044\u3066\u91cd\u8981\u3067\u3059\u3002\u7d99\u7d9a\u7684\u306a\u76e3\u67fb\u3068\u6539\u5584\u3092\u63a8\u9032\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/div>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7a\u3067\u304d\u308b\u3053\u3068 NTP\u306e\u57fa\u672c\u7684\u306a\u4ed5\u7d44\u307f\u3068\u52d5\u4f5c\u539f\u7406\u3092\u7406\u89e3\u3067\u304d\u308b \u6642\u523b\u306e\u6b63\u78ba\u6027\u78ba\u4fdd\u306e\u91cd\u8981\u6027\u3068\u30ea\u30b9\u30af\u3092\u628a\u63e1\u3067\u304d\u308b \u76ee\u6b21 1. NTP\u306e\u4ed5\u7d44\u307f\u3068\u305d\u306e\u91cd\u8981\u6027\u306b\u3064\u3044\u3066\u7406\u89e3\u3057\u305f\u3044 2. \u30d7\u30ed\u306b\u76f8\u8ac7\u3059\u308b 3. \u4f01\u696d\u306e\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u6642\u523b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"","site-content-layout":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[116],"tags":[184,1108,195,122,1109],"class_list":["post-51036","post","type-post","status-publish","format-standard","hentry","category-116","tag-bcp","tag-ntp","tag-195","tag-122","tag-1109"],"_links":{"self":[{"href":"https:\/\/jouhou.main.jp\/index.php?rest_route=\/wp\/v2\/posts\/51036","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jouhou.main.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jouhou.main.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jouhou.main.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jouhou.main.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=51036"}],"version-history":[{"count":0,"href":"https:\/\/jouhou.main.jp\/index.php?rest_route=\/wp\/v2\/posts\/51036\/revisions"}],"wp:attachment":[{"href":"https:\/\/jouhou.main.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=51036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jouhou.main.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=51036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jouhou.main.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=51036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}