{"id":17983,"date":"2025-05-08T15:00:42","date_gmt":"2025-05-08T06:00:42","guid":{"rendered":"https:\/\/www.secuavail.com\/kb\/?p=17983"},"modified":"2025-05-08T15:54:53","modified_gmt":"2025-05-08T06:54:53","slug":"fortigate_syslog_time","status":"publish","type":"post","link":"https:\/\/www.secuavail.com\/kb\/nw-device\/fortigate_syslog_time\/","title":{"rendered":"\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u3067\u53d7\u4fe1\u3057\u305fSYSLOG\u306e\u6642\u523b\u304c\u305a\u308c\u3066\u3044\u308b\u554f\u984c\u306e\u89e3\u6c7a"},"content":{"rendered":"<p>\u4eca\u56de\u3001UTM\u6a5f\u5668\u3067\u3042\u308bFortiGate\u304b\u3089\u9001\u4fe1\u3055\u308c\u305fSYSLOG\u3092\u3001\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u3067\u53d7\u4fe1\u3057\u305f\u969b\u3001\u8a18\u9332\u3055\u308c\u308b\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u304c\u5b9f\u969b\u306e\u6642\u523b\u3068\u7d0410\u5206\u305a\u308c\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u554f\u984c\u306b\u76f4\u9762\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u30ed\u30b0\u306b\u304a\u3051\u308b\u6b63\u78ba\u306a\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306f\u3001\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u767a\u751f\u6642\u523b\u306e\u7279\u5b9a\u3084\u30a4\u30d9\u30f3\u30c8\u306e\u76f8\u95a2\u5206\u6790\u3092\u884c\u3046\u4e0a\u3067\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u6642\u523b\u304c\u305a\u308c\u3066\u3044\u3066\u306f\u3001\u30ed\u30b0\u306e\u4fa1\u5024\u304c\u5927\u304d\u304f\u640d\u306a\u308f\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001\u3053\u306eSYSLOG\u6642\u523b\u305a\u308c\u554f\u984c\u306e\u539f\u56e0\u3092\u7279\u5b9a\u3057\u3001\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u5074\u306eNTP (Network Time Protocol) \u8a2d\u5b9a\u3092\u898b\u76f4\u3059\u3053\u3068\u3067\u89e3\u6c7a\u306b\u81f3\u3063\u305f\u30d7\u30ed\u30bb\u30b9\u3092\u3001\u5177\u4f53\u7684\u306a\u624b\u9806\u3068\u3068\u3082\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.secuavail.com\/kb\/nw-device\/fortigate_syslog_time\/#%E7%92%B0%E5%A2%83\" >\u74b0\u5883<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.secuavail.com\/kb\/nw-device\/fortigate_syslog_time\/#SYSLOG%E3%82%BF%E3%82%A4%E3%83%A0%E3%82%B9%E3%82%BF%E3%83%B3%E3%83%97%E3%81%AE%E3%81%9A%E3%82%8C\" >SYSLOG\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306e\u305a\u308c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.secuavail.com\/kb\/nw-device\/fortigate_syslog_time\/#%E5%8E%9F%E5%9B%A0%E8%AA%BF%E6%9F%BB\" >\u539f\u56e0\u8abf\u67fb<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.secuavail.com\/kb\/nw-device\/fortigate_syslog_time\/#1_FortiGate%E5%86%85%E6%99%82%E5%88%BB%E8%A8%AD%E5%AE%9A%E3%81%AE%E7%A2%BA%E8%AA%8D\" >1. FortiGate\u5185\u6642\u523b\u8a2d\u5b9a\u306e\u78ba\u8a8d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.secuavail.com\/kb\/nw-device\/fortigate_syslog_time\/#2_%E3%83%AD%E3%82%B0%E5%8F%8E%E9%9B%86%E3%82%B5%E3%83%BC%E3%83%90%E5%86%85%E6%99%82%E5%88%BB%E8%A8%AD%E5%AE%9A%E3%81%AE%E7%A2%BA%E8%AA%8D\" >2. \u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u5185\u6642\u523b\u8a2d\u5b9a\u306e\u78ba\u8a8d<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.secuavail.com\/kb\/nw-device\/fortigate_syslog_time\/#%E8%A7%A3%E6%B1%BA\" >\u89e3\u6c7a<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.secuavail.com\/kb\/nw-device\/fortigate_syslog_time\/#%E3%83%AD%E3%82%B0%E5%8F%8E%E9%9B%86%E3%82%B5%E3%83%BC%E3%83%90%E3%81%B8%E3%81%AENTP%E3%82%A4%E3%83%B3%E3%82%B9%E3%83%88%E3%83%BC%E3%83%AB\" >\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u3078\u306eNTP\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.secuavail.com\/kb\/nw-device\/fortigate_syslog_time\/#%E6%9C%80%E7%B5%82%E7%A2%BA%E8%AA%8D\" >\u6700\u7d42\u78ba\u8a8d<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.secuavail.com\/kb\/nw-device\/fortigate_syslog_time\/#%E3%81%BE%E3%81%A8%E3%82%81\" >\u307e\u3068\u3081<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E7%92%B0%E5%A2%83\"><\/span>\u74b0\u5883<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4eca\u56de\u306e\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u74b0\u5883\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>UTM\uff1aFortiGate (FortiOS v7.4.7)<\/li>\n<li>\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0OS\uff1aAlmaLinux 8.10 (Cerulean Leopard)<\/li>\n<\/ul>\n<p>\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u306b\u306fLogStare Collector\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u30ed\u30b0\u3092\u53ce\u96c6\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-17986\" src=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp1-300x143.png\" alt=\"\" width=\"526\" height=\"251\" srcset=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp1-300x143.png 300w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp1.png 606w\" sizes=\"auto, (max-width: 526px) 100vw, 526px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"SYSLOG%E3%82%BF%E3%82%A4%E3%83%A0%E3%82%B9%E3%82%BF%E3%83%B3%E3%83%97%E3%81%AE%E3%81%9A%E3%82%8C\"><\/span><span lang=\"EN-US\">SYSLOG<\/span>\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306e\u305a\u308c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u307e\u305a\u3001LogStare Collector\u3067\u53d7\u4fe1\u3057\u305fFortiGate\u304b\u3089\u306eSYSLOG\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u4ee5\u4e0b\u306f\u3001\u554f\u984c\u304c\u767a\u751f\u3057\u3066\u3044\u305f\u969b\u306e\u30ed\u30b0\u306e\u4f8b\u3067\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-17987\" src=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp2-300x86.png\" alt=\"\" width=\"554\" height=\"159\" srcset=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp2-300x86.png 300w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp2-768x220.png 768w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp2.png 1087w\" sizes=\"auto, (max-width: 554px) 100vw, 554px\" \/><\/p>\n<p>\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u304c\u3064\u3051\u305f\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7(\u753b\u50cf\u9752\u7dda\u4e0a)\u306f\u3001\u5b9f\u969b\u306e\u30ed\u30b0\u53d7\u4fe1\u6642\u523b\u3068\u6bd4\u8f03\u3057\u3066\u3001\u7d0410\u5206\u9045\u308c\u3066\u8868\u793a\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u9001\u4fe1\u5143\u3067\u3042\u308bFortiGate\u304c\u3064\u3051\u305f\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7(\u753b\u50cf\u8d64\u7dda\u4e0a)\u306f\u3001\u5b9f\u969b\u306e\u30ed\u30b0\u53d7\u4fe1\u6642\u523b\u3068\u307b\u307c\u4e00\u81f4\u3057\u3066\u3044\u305f\u306e\u3067\u3001FortiGate\u5074\u306e\u6642\u523b\u8a2d\u5b9a\u306f\u304a\u305d\u3089\u304f\u6b63\u3057\u3044\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%8E%9F%E5%9B%A0%E8%AA%BF%E6%9F%BB\"><\/span>\u539f\u56e0\u8abf\u67fb<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5ff5\u306e\u305f\u3081FortiGate\u306e\u6642\u523b\u8a2d\u5b9a\u304c\u672c\u5f53\u306b\u6b63\u3057\u3044\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304b\u3089\u3001\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u306e\u6642\u523b\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b\u3001\u3068\u3044\u3046\u624b\u9806\u3067\u9032\u3081\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1_FortiGate%E5%86%85%E6%99%82%E5%88%BB%E8%A8%AD%E5%AE%9A%E3%81%AE%E7%A2%BA%E8%AA%8D\"><\/span>1. FortiGate\u5185\u6642\u523b\u8a2d\u5b9a\u306e\u78ba\u8a8d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u6642\u523b\u3092\u6b63\u3057\u3044\u6642\u523b\u306b\u5408\u308f\u305b\u308b\u969b\u306b\u306f\u3001NTP(Network Time Protocol)\u3068\u3044\u3046\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u3088\u308b\u6642\u523b\u540c\u671f\u304c\u7528\u3044\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u3001\u30ed\u30b0\u306e\u9001\u4fe1\u5143\u3067\u3042\u308bFortiGate\u306e\u6642\u523b\u304c\u6b63\u3057\u3044\u304b\u3069\u3046\u304b\u3068\u3001\u6642\u523b\u540c\u671f\u304c\u884c\u308f\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<p><span style=\"color: #008000;\"><strong>GUI\u3067\u306e\u78ba\u8a8d<\/strong><\/span><\/p>\n<p>FortiGate\u306e\u7ba1\u7406\u753b\u9762\u306b\u30ed\u30b0\u30a4\u30f3\u3057\u3001[\u30b7\u30b9\u30c6\u30e0] -&gt; [\u8a2d\u5b9a] -&gt; [\u30b7\u30b9\u30c6\u30e0\u6642\u9593] \u306e\u9805\u76ee\u3067\u3001\u73fe\u5728\u306e\u6642\u523b\u3001\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u3001\u304a\u3088\u3073NTP\u30b5\u30fc\u30d0\u3068\u306e\u540c\u671f\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><span style=\"color: #008000;\"><strong>CLI\u3067\u306e\u78ba\u8a8d<\/strong><\/span><\/p>\n<p>1\uff0e<strong>\u73fe\u5728\u306e\u30b7\u30b9\u30c6\u30e0\u6642\u523b\u3068\u6700\u7d42NTP\u540c\u671f\u6642\u523b\u306e\u78ba\u8a8d<\/strong>:<\/p>\n<p>execute time\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001current time(\u73fe\u5728\u306e\u30b7\u30b9\u30c6\u30e0\u6642\u523b)\u3068last ntp sync(\u6700\u5f8c\u306bNTP\u540c\u671f\u304c\u6210\u529f\u3057\u305f\u65e5\u6642)\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-17989\" src=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp3-300x67.png\" alt=\"\" width=\"550\" height=\"123\" srcset=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp3-300x67.png 300w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp3.png 365w\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" \/><\/p>\n<ol start=\"2\">\n<li><strong> NTP\u540c\u671f\u30b9\u30c6\u30fc\u30bf\u30b9\u306e\u8a73\u7d30\u78ba\u8a8d<\/strong>\uff1a<\/li>\n<\/ol>\n<p>diagnose sys ntp status\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001NTP\u540c\u671f\u72b6\u614b\u306b\u95a2\u3059\u308b\u8a73\u7d30\u306a\u60c5\u5831\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-17990\" src=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp4-300x199.png\" alt=\"\" width=\"552\" height=\"366\" srcset=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp4-300x199.png 300w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp4-768x510.png 768w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp4.png 816w\" sizes=\"auto, (max-width: 552px) 100vw, 552px\" \/><\/p>\n<ul>\n<li>synchronized: yes: NTP\u30b5\u30fc\u30d0\u3068\u6b63\u5e38\u306b\u540c\u671f\u3067\u304d\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3059\u3002<\/li>\n<li>ntpsync: enabled: NTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u6a5f\u80fd\u304c\u6709\u52b9\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3059\u3002<\/li>\n<li>server-mode: enabled\/disabled: FortiGate\u81ea\u8eab\u304cNTP\u30b5\u30fc\u30d0\u3068\u3057\u3066\u52d5\u4f5c\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u793a\u3059\u3002<\/li>\n<\/ul>\n<p>\u7d9a\u304f\u5404\u30b5\u30fc\u30d0\u30a8\u30f3\u30c8\u30ea\u3067\u306f\u3001\u540c\u671f\u306b\u4f7f\u7528\u3057\u3066\u3044\u308bNTP\u30b5\u30fc\u30d0\u306e\u60c5\u5831\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>ipv4 server(\u2026)\u2026: NTP\u30b5\u30fc\u30d0\u306e\u30db\u30b9\u30c8\u540d\u3068IP\u30a2\u30c9\u30ec\u30b9\u3002<\/li>\n<li>server-version=4: NTP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u304cv4\u3002<\/li>\n<li>reachable: \u3053\u306eNTP\u30b5\u30fc\u30d0\u306b\u5230\u9054\u3067\u304d\u308b\u3002<\/li>\n<li>selected: \u73fe\u5728\u3053\u306eNTP\u30b5\u30fc\u30d0\u304c\u6b63\u3057\u3044\u6642\u523b\u306e\u60c5\u5831\u6e90\u3068\u3057\u3066\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u3002<\/li>\n<li>stratum: \u4e16\u754c\u57fa\u6e96\u3068\u306a\u308b\u6642\u8a08\u304b\u3089\u306e\u968e\u5c64\u30ec\u30d9\u30eb\u3002Stratum1\u304c\u539f\u5b50\u6642\u8a08\u306a\u3069\u306b\u76f4\u63a5\u63a5\u7d9a\u3055\u308c\u305f\u30b5\u30fc\u30d0\u3067\u3001\u6570\u5024\u304c\u5c0f\u3055\u3044\u307b\u3069\u9ad8\u7cbe\u5ea6\u3068\u3055\u308c\u308b\u3002<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u60c5\u5831\u304b\u3089\u3001\u672c\u74b0\u5883\u306eFortiGate\u3067\u306fNTP\u540c\u671f\u304c\u554f\u984c\u306a\u304f\u884c\u308f\u308c\u3066\u304a\u308a\u3001\u6b63\u78ba\u306a\u6642\u9593\u3092\u4f7f\u7528\u3057\u3066SYSLOG\u3092\u9001\u4fe1\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_%E3%83%AD%E3%82%B0%E5%8F%8E%E9%9B%86%E3%82%B5%E3%83%BC%E3%83%90%E5%86%85%E6%99%82%E5%88%BB%E8%A8%AD%E5%AE%9A%E3%81%AE%E7%A2%BA%E8%AA%8D\"><\/span>2. \u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u5185\u6642\u523b\u8a2d\u5b9a\u306e\u78ba\u8a8d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u6b21\u306b\u3001SYSLOG\u3092\u53d7\u4fe1\u3057\u3066\u3044\u308b\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\uff08AlmaLinux 8.10\uff09\u306e\u6642\u523b\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002timedatectl \u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u6642\u523b\u3084\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u3001NTP\u540c\u671f\u306e\u72b6\u614b\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-17991\" src=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp5-300x101.png\" alt=\"\" width=\"543\" height=\"183\" srcset=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp5-300x101.png 300w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp5.png 441w\" sizes=\"auto, (max-width: 543px) 100vw, 543px\" \/><\/p>\n<ul>\n<li>Local time: \u30b7\u30b9\u30c6\u30e0\u304c\u8a8d\u8b58\u3057\u3066\u3044\u308b\u73fe\u5728\u6642\u523b\uff08\u30ed\u30fc\u30ab\u30eb\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\uff09\u3002<\/li>\n<li>Universal time: \u5354\u5b9a\u4e16\u754c\u6642 (UTC)\u3002<\/li>\n<li>RTC time: \u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30af\u30ed\u30c3\u30af\uff08Real Time Clock\uff09\u306e\u6642\u523b\u3002\u30de\u30b6\u30fc\u30dc\u30fc\u30c9\u306b\u642d\u8f09\u3055\u308c\u3066\u304a\u308a\u3001OS\u304c\u8d77\u52d5\u3057\u3066\u3044\u306a\u3044\u9593\u3082\u6642\u523b\u3092\u4fdd\u6301\u3057\u307e\u3059\u3002\u901a\u5e38\u306fUTC\u3067\u4fdd\u6301\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>Time zone: \u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u3002<\/li>\n<li>System clock synchronized: \u30b7\u30b9\u30c6\u30e0\u30af\u30ed\u30c3\u30af\u304cNTP\u30b5\u30fc\u30d0\u3068\u540c\u671f\u3055\u308c\u3066\u3044\u308b\u304b\u3002<\/li>\n<li>NTP service: NTP\u540c\u671f\u3092\u884c\u3046\u30b5\u30fc\u30d3\u30b9\uff08chronyd \u306a\u3069\uff09\u304c\u6709\u52b9\u304b\u3002<\/li>\n<li>RTC in local TZ: \u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30af\u30ed\u30c3\u30af\u304c\u30ed\u30fc\u30ab\u30eb\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u3067\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3002\u2192\u3000no \u304c\u4e00\u822c\u7684\u3067\u3059\uff08UTC\u63a8\u5968\uff09<\/li>\n<\/ul>\n<p>\u5f53\u6642\u306e\u6642\u523b\u306f11:03\u9803\u3067\u3042\u3063\u305f\u305f\u3081\u3001\u4ee5\u4e0a\u306e\u60c5\u5831\u3068\u5408\u308f\u305b\u3066\u3001\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u306e\u6642\u523b\u306f10\u5206\u307b\u3069\u305a\u308c\u3066\u304a\u308a\u3001\u304b\u3064NTP\u306b\u3088\u308b\u6642\u523b\u540c\u671f\u3082\u884c\u308f\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u53ce\u96c6\u3057\u305fSYSLOG\u3067\u305a\u308c\u3066\u3044\u305f\u306e\u304c\u53d7\u4fe1\u6642\u523b\u3067\u3042\u3063\u305f\u3053\u3068\u3068\u3001\u305a\u308c\u306e\u9593\u9694\u304c\u540c\u3058\u3067\u3042\u308b\u3053\u3068\u304b\u3089\u3001\u3053\u308c\u304cSYSLOG\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u305a\u308c\u306e\u76f4\u63a5\u7684\u306a\u539f\u56e0\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u6975\u3081\u3066\u9ad8\u3044\u3068\u5224\u65ad\u3057\u307e\u3057\u305f\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E8%A7%A3%E6%B1%BA\"><\/span>\u89e3\u6c7a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>SYSLOG\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u304c\u305a\u308c\u305f\u539f\u56e0\u304c\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u306e\u6642\u523b\u305a\u308c\u3068NTP\u672a\u8a2d\u5b9a\u306b\u3042\u308b\u3068\u7279\u5b9a\u3067\u304d\u305f\u305f\u3081\u3001NTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u8a2d\u5b9a\u3057\u3066\u6642\u523b\u540c\u671f\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E3%83%AD%E3%82%B0%E5%8F%8E%E9%9B%86%E3%82%B5%E3%83%BC%E3%83%90%E3%81%B8%E3%81%AENTP%E3%82%A4%E3%83%B3%E3%82%B9%E3%83%88%E3%83%BC%E3%83%AB\"><\/span>\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u3078\u306eNTP\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>NTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306fchrony\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002chrony \u306f\u3001\u5f93\u6765\u306e ntpd \u3068\u6bd4\u8f03\u3057\u3066\u3001\u7279\u306b\u4eee\u60f3\u74b0\u5883\u3084\u65ad\u7d9a\u7684\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u3055\u308c\u308b\u30b7\u30b9\u30c6\u30e0\u3067\u306e\u540c\u671f\u7cbe\u5ea6\u304c\u9ad8\u3044\u306a\u3069\u306e\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li><span style=\"color: #008000;\"><strong> chrony<\/strong><strong>\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3068\u8d77\u52d5<\/strong><\/span><\/li>\n<\/ol>\n<p>\u307e\u305a\u3001chrony \u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3001\u30b5\u30fc\u30d3\u30b9\u3092\u8d77\u52d5\u30fb\u6709\u52b9\u5316\uff08\u30b7\u30b9\u30c6\u30e0\u8d77\u52d5\u6642\u306b\u81ea\u52d5\u8d77\u52d5\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\uff09\u3057\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-17993\" src=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp6-300x92.png\" alt=\"\" width=\"695\" height=\"213\" srcset=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp6-300x92.png 300w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp6-768x235.png 768w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp6.png 1249w\" sizes=\"auto, (max-width: 695px) 100vw, 695px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-17994\" style=\"font-size: 14px;\" src=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp7-300x88.png\" alt=\"\" width=\"692\" height=\"203\" srcset=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp7-300x88.png 300w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp7-768x224.png 768w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp7.png 1241w\" sizes=\"auto, (max-width: 692px) 100vw, 692px\" \/><\/p>\n<ol start=\"2\">\n<li><span style=\"color: #008000;\"><strong>\u540c\u671f\u72b6\u6cc1\u306e\u78ba\u8a8d<\/strong><\/span><\/li>\n<\/ol>\n<p>chronyc tracking\u30b3\u30de\u30f3\u30c9\u3067\u73fe\u5728\u306e\u540c\u671f\u72b6\u6cc1\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-17995\" src=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp8-300x166.png\" alt=\"\" width=\"526\" height=\"291\" srcset=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp8-300x166.png 300w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp8.png 463w\" sizes=\"auto, (max-width: 526px) 100vw, 526px\" \/><\/p>\n<p>Reference ID\u3084Stratum\u306a\u3069\u306e\u90e8\u5206\u306b\u9069\u5207\u306aNTP\u30b5\u30fc\u30d0\u60c5\u5831\u304c\u5165\u3063\u3066\u3044\u308b\u306e\u3067\u3001NTP\u540c\u671f\u304c\u6210\u529f\u3057\u305f\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-17996\" src=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp9-300x99.png\" alt=\"\" width=\"525\" height=\"173\" srcset=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp9-300x99.png 300w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2025\/05\/syslog-timestamp9.png 449w\" sizes=\"auto, (max-width: 525px) 100vw, 525px\" \/><\/p>\n<p>\u3082\u3046\u4e00\u5ea6timedatectl\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u6642\u523b\u304c\u6b63\u78ba\u306a\u3082\u306e\u306b\u306a\u3063\u3066\u3044\u308b\u4ed6\u3001NTP service(NTP\u30b5\u30fc\u30d3\u30b9\u304c\u6709\u52b9\u304b)\u304cactive\u306b\u306a\u3063\u3066\u304a\u308a\u3001System clock synchronized(\u30b7\u30b9\u30c6\u30e0\u30af\u30ed\u30c3\u30af\u304cNTP\u30b5\u30fc\u30d0\u3068\u540c\u671f\u3055\u308c\u3066\u3044\u308b\u304b)\u3082yes\u306b\u306a\u3063\u3066\u3044\u308b\u305f\u3081\u3001NTP\u540c\u671f\u8a2d\u5b9a\u304c\u9069\u5207\u3067\u3042\u308b\u3068\u5224\u65ad\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E6%9C%80%E7%B5%82%E7%A2%BA%E8%AA%8D\"><\/span>\u6700\u7d42\u78ba\u8a8d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>NTP\u540c\u671f\u304c\u6b63\u5e38\u306b\u6a5f\u80fd\u3057\u59cb\u3081\u305f\u5f8c\u3001\u518d\u5ea6LogStare Collector\u3067\u65b0\u3057\u3044SYSLOG\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u305d\u306e\u7d50\u679c\u3001\u30ed\u30b0\u30a8\u30f3\u30c8\u30ea\u306b\u8a18\u9332\u3055\u308c\u308b\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u304c\u3001\u5b9f\u969b\u306e\u53d7\u4fe1\u6642\u523b\u3068\u307b\u307c\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3057\u305f\u3002\u3053\u308c\u3067\u3001SYSLOG\u306e\u6642\u523b\u305a\u308c\u554f\u984c\u306f\u7121\u4e8b\u89e3\u6c7a\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E3%81%BE%E3%81%A8%E3%82%81\"><\/span>\u307e\u3068\u3081<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4eca\u56de\u8d77\u3053\u3063\u305f\u554f\u984c\u306e\u539f\u56e0\u306f\u3001\u30ed\u30b0\u9001\u4fe1\u5143\uff08FortiGate\uff09\u3067\u306f\u306a\u304f\u3001\u30ed\u30b0\u53d7\u4fe1\u5074\u30b5\u30fc\u30d0\u306e\u30b7\u30b9\u30c6\u30e0\u6642\u523b\u304c\u4e0d\u6b63\u78ba\u3067\u3042\u308a\u3001\u304b\u3064NTP\u306b\u3088\u308b\u6642\u523b\u540c\u671f\u304c\u884c\u308f\u308c\u3066\u3044\u306a\u304b\u3063\u305f\u3053\u3068\u3067\u3057\u305f\u3002<\/p>\n<p>\u89e3\u6c7a\u7b56\u3068\u3057\u3066\u3001\u30ed\u30b0\u53ce\u96c6\u30b5\u30fc\u30d0\u306bNTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8 chrony 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