{"id":1605,"date":"2023-07-08T14:07:23","date_gmt":"2023-07-08T05:07:23","guid":{"rendered":"https:\/\/ts-engine.net\/?p=1605"},"modified":"2023-07-08T14:07:23","modified_gmt":"2023-07-08T05:07:23","slug":"tunnnel%e6%8a%80%e8%a1%93%e3%81%ae%e5%8b%89%e5%bc%b7%e4%b8%ad%e3%81%abvti%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6%e7%90%86%e8%a7%a3%e3%81%ab%e6%82%a9%e3%82%93%e3%81%a0%e3%81%ae%e3%81%a7%e3%81%be%e3%81%a8","status":"publish","type":"post","link":"http:\/\/ts-engine.net\/?p=1605","title":{"rendered":"Tunnnel\u6280\u8853\u306e\u52c9\u5f37\u4e2d\u306bVTI\u306b\u3064\u3044\u3066\u7406\u89e3\u306b\u60a9\u3093\u3060\u306e\u3067\u307e\u3068\u3081\u308b\u3002"},"content":{"rendered":"\n<p><a href=\"https:\/\/learningnetwork.cisco.com\/s\/question\/0D53i00000Kt1NyCAJ\/gre-vti-and-ipsec\">https:\/\/learningnetwork.cisco.com\/s\/question\/0D53i00000Kt1NyCAJ\/gre-vti-and-ipsec<\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u307e\u305a\u306fCisco\u3092\u53c2\u8003\u306b\u3059\u308b\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>VTI is similar to GRE encap but overhead is smaller 24 bytes then GRE.<\/p>\n\n\n\n<p>VTI supports only IPv4 and no other no-IP payloads are supported.&nbsp;<\/p>\n\n\n\n<p>Configuration is set to IPv4 or IPv6 tunnel mode, IPSec Transform set is also in tunnel mode<\/p>\n\n\n\n<p>there is no need for&nbsp;<em>ip mtu<\/em>&nbsp;command in VTI; it is good idea to do<em>&nbsp;ip tcp adjust-mss<\/em>, usually set to 1406<\/p>\n<\/blockquote>\n\n\n\n<p>\u3068\u3042\u308b\u3002\u3064\u307e\u308aGRE\u3068\u540c\u3058\u30c8\u30f3\u30cd\u30eb\u6280\u8853\u306e\u3088\u3046\u3067\u306f\u3042\u308b\u3002GRE\u3068\u540c\u69d8,<\/p>\n\n\n\n<p>VTI\u3082\u30de\u30eb\u30c1\u30ad\u30e3\u30b9\u30c8\u3082\u52d5\u304b\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<p>GRE\u306e\u3088\u3046\u306b\u5358\u4f53\u3067\u30c8\u30f3\u30cd\u30eb\u3092\u52d5\u304b\u3059\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3088\u3046\u3002<\/p>\n\n\n\n<p>VTI\u3092\u4f7f\u3046\u6642\u306fIPSEC\u304c\u30bb\u30c3\u30c8\u306b\u306a\u3063\u3066\u3044\u308b\u3002\u3068\u3044\u3046\u3053\u3068\u306f\u3001IPSEC over GRE\u307f\u305f\u3044\u306a\u5f62\u306b\u306a\u308b\u306e\u304b\u306a\u3002VTI\u306e\u30c8\u30f3\u30cd\u30eb\u306f\u4ed6\u306e\u30d9\u30f3\u30c0\u30fc\u3001\u3044\u308f\u3086\u308bfortigate\u3068\u304b\u3067\u3082\u52d5\u304f\u6280\u8853\u306a\u306e\u304b\u3068\u601d\u3063\u305f\u304c\u3001\u898b\u3066\u3044\u308b\u9650\u308a\u306f\u554f\u984c\u306a\u3055\u305d\u3046\u3002\u7279\u306bGRE\/VTI\u306a\u306e\u304b\u3092\u6307\u5b9a\u3059\u308b\u5834\u6240\u3059\u3089\u306a\u3044\u306e\u3067\u3001\u81ea\u52d5\uff1f<\/p>\n\n\n\n<p><a href=\"https:\/\/www.networktcpip.com\/post\/vti-tunnel-between-asa-and-fortinet-and-internet-access-over-vti\">https:\/\/www.networktcpip.com\/post\/vti-tunnel-between-asa-and-fortinet-and-internet-access-over-vti<\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/learningnetwork.cisco.com\/s\/question\/0D53i00000Kt1NyCAJ\/gre-vti-and-ipsec \u307e\u305a\u306fCisco\u3092\u53c2\u8003\u306b\u3059\u308b\u3002 VTI is similar to GRE encap but overhead is smaller 24 bytes then GRE. VTI supports only IPv4 and no other no-IP payloads are supported.&nbsp; Configuration is set to IPv4 or IPv6 tunnel mode, IPSec Transform set is also in tunnel mode there is no need for&nbsp;ip mtu&nbsp;command in VTI; it is good [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-1605","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"http:\/\/ts-engine.net\/index.php?rest_route=\/wp\/v2\/posts\/1605","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/ts-engine.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/ts-engine.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/ts-engine.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/ts-engine.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1605"}],"version-history":[{"count":0,"href":"http:\/\/ts-engine.net\/index.php?rest_route=\/wp\/v2\/posts\/1605\/revisions"}],"wp:attachment":[{"href":"http:\/\/ts-engine.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1605"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ts-engine.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1605"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ts-engine.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}