{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frabbit51.hatenadiary.jp%2Fentry%2F2020%2F12%2F17%2F083000\" title=\"NVR510 L2TP/IPSec\u306el2tp keepalive\u6a5f\u80fd\u304cRFC2661/3931\u306b\u6e96\u3058\u3066\u3044\u306a\u3044\u4e8b\u306b\u3088\u308b\u632f\u821e\u3044 - rabbit51\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://rabbit51.hatenadiary.jp/","url":"https://rabbit51.hatenadiary.jp/entry/2020/12/17/083000","height":"190","author_name":"rabbit5151","author_url":"https://blog.hatena.ne.jp/rabbit5151/","provider_url":"https://hatena.blog","width":"100%","description":"Wireless\u7aef\u672b\u304b\u3089\u306eL2TP/IPSec\u63a5\u7d9a\u3067\u300c\u610f\u56f3\u3057\u306a\u3044\u56de\u7dda\u5207\u65ad\u300d\u304c\u767a\u751f\u3057\u305f\u6642\u306b\u300cL2TP Keepalive\u6a5f\u80fd\u300d\u304c\u6709\u52b9\u306b\u50cd\u304f\u3002 RFC2661/RFC3931\u3067\u306f\u3001RFC2661 5.5 Keepalive (Hello) This is accomplished by injecting Hello control messages after a specified period of time has elapsed since the last data or control message was received on a tunnel. RFC3931 4.4. Ke\u2026","type":"rich","published":"2020-12-17 08:30:00","provider_name":"Hatena Blog","title":"NVR510 L2TP/IPSec\u306el2tp keepalive\u6a5f\u80fd\u304cRFC2661/3931\u306b\u6e96\u3058\u3066\u3044\u306a\u3044\u4e8b\u306b\u3088\u308b\u632f\u821e\u3044","blog_title":"rabbit51","version":"1.0","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/r/rabbit5151/20250523/20250523234353.png","categories":["NVR510"]}