{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.mtioutput.com%2Fentry%2Flinux-tcpdump-ntp\" title=\"\u3010Linux\u3011tcpdump\u3067\u7279\u5b9a\u30dd\u30fc\u30c8\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u53d6\u5f97\u3057\u89e3\u6790\u3059\u308b\u6d41\u308c - (O+P)ut\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://www.mtioutput.com/entry/linux-tcpdump-ntp","provider_url":"https://hatena.blog","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/m/mtiit/20190313/20190313144517.jpg","categories":["UNIX","UNIX-Linux"],"blog_url":"https://www.mtioutput.com/","title":"\u3010Linux\u3011tcpdump\u3067\u7279\u5b9a\u30dd\u30fc\u30c8\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u53d6\u5f97\u3057\u89e3\u6790\u3059\u308b\u6d41\u308c","author_url":"https://blog.hatena.ne.jp/mtiit/","version":"1.0","published":"2020-04-21 00:00:00","width":"100%","provider_name":"Hatena Blog","height":"190","author_name":"mtiit","type":"rich","blog_title":"(O+P)ut","description":"\u306f\u3058\u3081\u306b Linux\u74b0\u5883\u306b\u3066NTP\u30c7\u30fc\u30e2\u30f3\u3092\u8d77\u52d5\u3057\u3066NTP\u30b5\u30fc\u30d0\u3068\u901a\u4fe1\u3057\u3066\u3044\u308b\u30d1\u30b1\u30c3\u30c8\u3092\u53d6\u5f97\u3057\u3001Windows\u74b0\u5883\u306eWireshark\u306b\u8aad\u307e\u305b\u308b\u6d41\u308c\u3068\u305d\u306e\u30d1\u30b1\u30c3\u30c8\u306e\u4e2d\u8eab\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002 \u74b0\u5883\u60c5\u5831 Debian GNU/Linux 9 Wireshark 3.2.2 \u4e8b\u524d\u60c5\u5831 NTP\u30b5\u30fc\u30d0\u306f\u300c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30de\u30eb\u30c1\u30d5\u30a3\u30fc\u30c9(MFEED) \u6642\u523b\u60c5\u5831\u63d0\u4f9b\u30b5\u30fc\u30d3\u30b9 for Public\u300d\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002 # ntpq -p remote refid st t when poll reach delay offset jitter ==================================\u2026"}