{"id":2717,"date":"2015-03-25T08:43:18","date_gmt":"2015-03-24T23:43:18","guid":{"rendered":"http:\/\/www.itbook.info\/web\/?p=2717"},"modified":"2015-03-25T08:43:18","modified_gmt":"2015-03-24T23:43:18","slug":"ipsec%e3%81%ae%e3%82%aa%e3%83%bc%e3%83%90%e3%83%bc%e3%83%98%e3%83%83%e3%83%89%e3%82%92%e8%aa%bf%e3%81%b9%e3%82%8b%e3%81%93%e3%81%a8%e3%81%8c%e3%81%a7%e3%81%8d%e3%82%8b%e3%83%84%e3%83%bc%e3%83%ab","status":"publish","type":"post","link":"https:\/\/www.itbook.info\/web\/2015\/03\/ipsec%e3%81%ae%e3%82%aa%e3%83%bc%e3%83%90%e3%83%bc%e3%83%98%e3%83%83%e3%83%89%e3%82%92%e8%aa%bf%e3%81%b9%e3%82%8b%e3%81%93%e3%81%a8%e3%81%8c%e3%81%a7%e3%81%8d%e3%82%8b%e3%83%84%e3%83%bc%e3%83%ab.html","title":{"rendered":"IPSec\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u8abf\u3079\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u30c4\u30fc\u30eb"},"content":{"rendered":"<aside class=\"row veu_insertAds before\"><div class=\"col-md-12\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n                        <!-- cat_\u4e0a\u90e8 -->\r\n                        <ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-6102004203189610\" data-ad-slot=\"9628163001\" data-ad-format=\"auto\"><\/ins>\r\n                        <script>\r\n                        (adsbygoogle = window.adsbygoogle || []).push({});\r\n                        <\/script><\/div><\/aside><p><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/farm9.staticflickr.com\/8734\/16920381611_24ddcdf11f.jpg\" width=\"500\" height=\"331\" alt=\"BIR62RGGjGxN5nrbnzwu_3\"><\/p>\n<p>IPSec\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u3001\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u8003\u616e\u3057\u305fMTU\u8a2d\u8a08\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u8003\u616e\u3057\u305f\u8a2d\u5b9a\u3092\u884c\u308f\u306a\u3044\u5834\u5408\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u304c\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u3055\u308c\u308b\u3053\u3068\u3067\u901a\u4fe1\u969c\u5bb3\u3084\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u4f4e\u4e0b\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060IPSec\u306e\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a2d\u8a08\u306e\u9055\u3044\u306b\u3088\u3063\u3066\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5909\u308f\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\u306a\u306e\u304b\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\u306a\u306e\u304b\uff1f<\/li>\n<li>IPSec\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u4f55\u3092\u4f7f\u3046\uff1f\uff08ESP\u3001AH\u306a\u3069\uff09<\/li>\n<li>GRE\u7b49\u306e\u30ab\u30d7\u30bb\u30eb\u5316\u3092\u4f7f\u3046\uff1f<\/li>\n<\/ul>\n<p>\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u304c\u8907\u6570\u3042\u3063\u3066\u3001\u305d\u306e\u5ea6\u306bMTU\u3092\u8a08\u7b97\u3059\u308b\u306e\u9762\u5012\u304f\u305b\u30fc\u3068\u601d\u3063\u3066\u3044\u305f\u3093\u3067\u3059\u304c\u3001Cisco\u304c\u4fbf\u5229\u306a\u30c4\u30fc\u30eb\u3092\u30ea\u30ea\u30fc\u30b9\u3057\u3066\u304f\u308c\u3066\u307e\u3057\u305f\u3002<\/p>\n<p><a href=\"https:\/\/cway.cisco.com\/tools\/ipsec-overhead-calc\/ipsec-overhead-calc.html\">IPSec Overhead Calculator &#8211; Cisco<\/a><\/p>\n<p>\u30d5\u30a9\u30fc\u30e0\u306b\u5fc5\u8981\u306a\u9805\u76ee\u3092\u8a18\u8f09\u3059\u308c\u3070\u3001IPSec\u3067\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u305f\u5f8c\u306e\u30c8\u30fc\u30bf\u30eb\u30d1\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba\u3092\u8a08\u7b97\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/farm9.staticflickr.com\/8707\/16895402216_769e9d43e4.jpg\"\/><\/figure>\n<p>IPSec\u306eMTU\u8a08\u7b97\u306b\u7121\u99c4\u306a\u6642\u9593\u3092\u4f7f\u3063\u3066\u3044\u305f\u65b9\u306b\u306f\u4fbf\u5229\u306a\u30c4\u30fc\u30eb\u3060\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<aside class=\"row veu_insertAds after\"><div class=\"col-md-12\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n                        <!-- cat_\u4e0a\u90e8 -->\r\n                        <ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-6102004203189610\" data-ad-slot=\"9628163001\" data-ad-format=\"auto\"><\/ins>\r\n                        <script>\r\n                        (adsbygoogle = window.adsbygoogle || []).push({});\r\n                        <\/script><\/div><\/aside>","protected":false},"excerpt":{"rendered":"<p>IPSec\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u3001\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u8003\u616e\u3057\u305fMTU\u8a2d\u8a08\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u8003\u616e\u3057\u305f\u8a2d\u5b9a\u3092\u884c\u308f\u306a\u3044\u5834\u5408\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u304c\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u3055\u308c\u308b\u3053\u3068\u3067\u901a\u4fe1\u969c\u5bb3\u3084\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u4f4e\u4e0b\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u305f\u3060IPSec\u306e\u5834 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[66,263,264],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>IPSec\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u8abf\u3079\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u30c4\u30fc\u30eb - \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u65e5\u3005\u306e\u51fa\u6765\u4e8b\u3092\u8a9e\u308b<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.itbook.info\/web\/2015\/03\/ipsec\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u8abf\u3079\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u30c4\u30fc\u30eb.html\" \/>\n<meta property=\"og:locale\" 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