{"id":1661,"date":"2024-01-24T14:33:12","date_gmt":"2024-01-24T05:33:12","guid":{"rendered":"http:\/\/daimaru-tech-blog.com\/?p=1541"},"modified":"2025-07-05T12:13:07","modified_gmt":"2025-07-05T03:13:07","slug":"%e3%80%90%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e5%85%a5%e9%96%80%e3%80%91gre-over-ipsec%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6%e6%b7%b1%e6%8e%98%e3%82%8a%e3%81%97%e3%81%a6%e3%81%bf","status":"publish","type":"post","link":"https:\/\/daimaru-tech-blog.com\/?p=1661","title":{"rendered":"\u3010\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5165\u9580\u3011GRE over IPSEC\u306b\u3064\u3044\u3066\u6df1\u6398\u308a\u3057\u3066\u307f\u305f"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u306f\u3058\u3081\u306b<\/h2>\n\n\n\n<p>\u3053\u3093\u306b\u3061\u306f\u3002<strong><span class=\"swl-inline-color has-swl-deep-02-color\"><span class=\"swl-marker 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mark_orange\">OSPF\u3084IS-IS\u3001BGP\u3068\u3044\u3063\u305f\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3067\u306f\u30de\u30eb\u30c1\u30ad\u30e3\u30b9\u30c8\u30d1\u30b1\u30c3\u30c8\u3092\u5fc5\u8981\u3068\u3059\u308b\u305f\u3081\u5229\u7528\u3067\u304d\u305a\u3001\u7d4c\u8def\u8a2d\u8a08\u306f\u5168\u3066Static\u3068\u306a\u308a\u8a2d\u8a08\u304b\u3089\u904b\u7528\u307e\u3067\u306e\u7a3c\u50cd\u304c\u5927\u5e45\u306b\u5897\u3048\u308b<\/span><\/span><\/strong>\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u4eca\u56de\u307e\u3068\u3081\u308b\u300cGRE over IPsec\u300d\u3092\u5229\u7528\u3059\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<center><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" version=\"1.1\" width=\"652px\" viewBox=\"-0.5 -0.5 652 238\" content=\"&lt;mxfile host=&quot;Electron&quot; modified=&quot;2023-12-20T11:45:22.507Z&quot; agent=&quot;Mozilla\/5.0 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style=&quot;shape=message;html=1;html=1;outlineConnect=0;labelPosition=center;verticalLabelPosition=bottom;align=center;verticalAlign=top;strokeWidth=2;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;&#10;          &lt;mxGeometry x=&quot;374&quot; y=&quot;370&quot; width=&quot;40&quot; height=&quot;30&quot; as=&quot;geometry&quot; \/&gt;&#10;        &lt;\/mxCell&gt;&#10;      &lt;\/root&gt;&#10;    &lt;\/mxGraphModel&gt;&#10;  &lt;\/diagram&gt;&#10;&lt;\/mxfile&gt;&#10;\" onclick=\"(function(svg){var src=window.event.target||window.event.srcElement;while (src!=null&amp;&amp;src.nodeName.toLowerCase()!='a'){src=src.parentNode;}if(src==null){if(svg.wnd!=null&amp;&amp;!svg.wnd.closed){svg.wnd.focus();}else{var 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justify-content: unsafe center; width: 118px; height: 1px; padding-top: 105px; margin-left: 2px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\"><font style=\"font-size: 20px;\" color=\"#ffffff\">Router1<\/font><\/div><\/div><\/div><\/foreignObject><text x=\"61\" y=\"109\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"12px\" text-anchor=\"middle\">Router1<\/text><\/switch><\/g><rect x=\"531\" y=\"75\" width=\"120\" height=\"60\" fill=\"#009900\" stroke=\"#000000\" stroke-width=\"2\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: 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font-weight=\"bold\">\u30de\u30eb\u30c1\u30ad\u30e3\u30b9\u30c8\u30d1\u30b1\u30c3\u30c8\u901a\u4fe1\u53ef\u306e\u305f\u3081&#xa;\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3082\u5229\u7528\u53ef\u80fd<\/text><\/switch><\/g><path d=\"M 531 154 L 571 154 L 571 184 L 531 184 Z\" fill=\"rgb(255, 255, 255)\" stroke=\"rgb(0, 0, 0)\" stroke-width=\"2\" stroke-miterlimit=\"10\" pointer-events=\"all\"\/><path d=\"M 531 154 L 551 169 L 571 154\" fill=\"none\" stroke=\"rgb(0, 0, 0)\" stroke-width=\"2\" stroke-miterlimit=\"10\" pointer-events=\"all\"\/><path d=\"M 285 154 L 325 154 L 325 184 L 285 184 Z\" fill=\"rgb(255, 255, 255)\" stroke=\"rgb(0, 0, 0)\" stroke-width=\"2\" stroke-miterlimit=\"10\" pointer-events=\"all\"\/><path d=\"M 285 154 L 305 169 L 325 154\" fill=\"none\" stroke=\"rgb(0, 0, 0)\" stroke-width=\"2\" stroke-miterlimit=\"10\" pointer-events=\"all\"\/><\/g><switch><g requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\"\/><a transform=\"translate(0,-5)\" xlink:href=\"https:\/\/www.drawio.com\/doc\/faq\/svg-export-text-problems\" target=\"_blank\" rel=\"noopener\"><text text-anchor=\"middle\" font-size=\"10px\" x=\"50%\" y=\"100%\">Text is not SVG &#8211; cannot display<\/text><\/a><\/switch><\/svg><\/center>\n\n\n\n<center><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-2776062481390161\"\n     crossorigin=\"anonymous\"><\/script>\n<!-- \u30ec\u30b9\u30dd\u30f3\u30b7\u30d6 -->\n<ins class=\"adsbygoogle\"\n     style=\"display:block\"\n     data-ad-client=\"ca-pub-2776062481390161\"\n     data-ad-slot=\"2830301217\"\n     data-ad-format=\"auto\"\n     data-full-width-responsive=\"true\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/center>\n\n\n\n<h2 class=\"wp-block-heading\">GRE over IPsec\u306e\u57fa\u672c\u8a2d\u5b9a<\/h2>\n\n\n\n<p>\u3053\u3053\u3067\u306fIPsec\u306b\u3064\u3044\u3066\u306f\u7d30\u304b\u304f\u8aac\u660e\u305b\u305a\u306b\u3001<strong>GRE over IPSec\u306e\u57fa\u672c\u7684\u306a\u8a2d\u5b9a\u65b9\u6cd5\u3068CML\u306b\u3088\u308b\u5b9f\u6a5f\u78ba\u8a8d<\/strong>\u3092\u884c\u3063\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u57fa\u672c\u7684\u306a\u8a2d\u5b9a\u306f\u300c<strong><span style=\"color:#0000ff\" class=\"swl-inline-color\"><span class=\"swl-marker mark_blue\">GRE\u306e\u8a2d\u5b9a\u3068IPSec\u306e\u8a2d\u5b9a\u306e\uff12\u30b9\u30c6\u30c3\u30d7<\/span><\/span><\/strong>\u300d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">GRE\u306e\u8a2d\u5b9a<\/h3>\n\n\n\n<p><strong>GRE\u306e\u8a2d\u5b9a\u306f\u524d\u56de\u306e\u8a18\u4e8b\u3092\u3054\u53c2\u7167\u304a\u9858\u3044\u81f4\u3057\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"swell-block-postLink\">\t\t\t<div class=\"p-blogCard -external -noimg\" data-type=\"type3\" data-onclick=\"clickLink\">\n\t\t\t\t<div class=\"p-blogCard__inner\">\n\t\t\t\t\t<span class=\"p-blogCard__caption\">\u3042\u308f\u305b\u3066\u8aad\u307f\u305f\u3044<\/span>\n\t\t\t\t\t\t\t\t\t\t<div class=\"p-blogCard__body\">\n\t\t\t\t\t\t<a class=\"p-blogCard__title\" href=\"https:\/\/daimaru-tech-blog.com\/?p=1437\" target=\"_blank\" rel=\"noopener noreferrer\">\u3010\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5165\u9580\u3011GRE\uff08Generic Routing Encapsulation\uff09\u306b\u3064\u3044\u3066 \u2013 \u3060\u3044\u307e\u308b\u30d6\u30ed\u30b0<\/a>\n\t\t\t\t\t\t<span class=\"p-blogCard__excerpt\"><\/span>\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div><\/div><\/div>\n\n\n\n<center><a href=\"\/\/af.moshimo.com\/af\/c\/click?a_id=4371787&#038;p_id=5794&#038;pc_id=16045&#038;pl_id=74542\" rel=\"nofollow\" referrerpolicy=\"no-referrer-when-downgrade\"><img decoding=\"async\" src=\"\/\/image.moshimo.com\/af-img\/5491\/000000074542.png\" width=\"728\" height=\"90\" style=\"border:none;\"><\/a><img decoding=\"async\" src=\"\/\/i.moshimo.com\/af\/i\/impression?a_id=4371787&#038;p_id=5794&#038;pc_id=16045&#038;pl_id=74542\" width=\"1\" height=\"1\" style=\"border:none;\"><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">IPSec\u306e\u8a2d\u5b9a<\/h3>\n\n\n\n<p>IPSec\u306e\u8a2d\u5b9a\u306f<strong><span style=\"color:#008000\" class=\"swl-inline-color\"><span class=\"swl-marker mark_green\">\u300cCrypto\u30d5\u30a1\u30a4\u30eb\u300d\u306e\u5229\u7528<\/span><\/span><\/strong>\u3068<span style=\"color:#008000\" class=\"swl-inline-color\"><strong><span class=\"swl-marker mark_green\">\u300cIPSec\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u300d\u306e\u5229\u7528<\/span><\/strong><\/span>\u306e\uff12\u30d1\u30bf\u30fc\u30f3\u306b\u5206\u304b\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u3067\u306f\u4e21\u65b9\u306e\u8a2d\u5b9a\u65b9\u6cd5\u3092\u8a18\u8f09\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<center><a href=\"https:\/\/px.a8.net\/svt\/ejp?a8mat=3TNY5O+K8RCI+399O+644DT\" rel=\"nofollow\">\n<img decoding=\"async\" border=\"0\" width=\"300\" height=\"250\" alt=\"\" src=\"https:\/\/www22.a8.net\/svt\/bgt?aid=231224748034&#038;wid=001&#038;eno=01&#038;mid=s00000015198001027000&#038;mc=1\"><\/a>\n<img decoding=\"async\" border=\"0\" width=\"1\" height=\"1\" src=\"https:\/\/www12.a8.net\/0.gif?a8mat=3TNY5O+K8RCI+399O+644DT\" alt=\"\"><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step0\uff1aIPSec\u306e\u5bfe\u8c61\u3068\u3059\u308bACL\u3092\u5b9a\u7fa9\uff08Crypto\u30d5\u30a1\u30a4\u30eb\u306e\u307f\uff09<\/h3>\n\n\n\n<p>\u3053\u306eACL\u306f\u3001IPSec\u3067\u4fdd\u8b77\u3055\u308c\u308b\u5bfe\u8c61\u3092\u8a18\u8f09\u3059\u308bACL\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>(config)# ip access-list extended &lt;ACL\u540d&gt; permit gre host &lt;\u30c8\u30f3\u30cd\u30eb Source IP&gt; host &lt;\u30c8\u30f3\u30cd\u30eb Dst IP&gt;<\/code><\/pre>\n\n\n\n<center><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-2776062481390161\"\n     crossorigin=\"anonymous\"><\/script>\n<ins class=\"adsbygoogle\"\n     style=\"display:block; text-align:center;\"\n     data-ad-layout=\"in-article\"\n     data-ad-format=\"fluid\"\n     data-ad-client=\"ca-pub-2776062481390161\"\n     data-ad-slot=\"7184901624\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step1\uff1aISAKMP\u30dd\u30ea\u30b7\u30fc\u306e\u4f5c\u6210\uff08Crypto\u30d5\u30a1\u30a4\u30eb\u30fbIPSec\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\uff09<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u30b3\u30de\u30f3\u30c9\u3067ISAKMP\u30dd\u30ea\u30b7\u30fc\u306e\u4f5c\u6210\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>(config)#crypto isakmp policy &lt;Priority\u5024&gt;\n(config-isakmp)# encryption { des | 3des | aes }\n(config-isakmp)# hash { sha | sha 256 | sha 384 | sha 512 | md5 }\n(config-isakmp)# authentication { pre-share | rsa-encr | rsa-sig }\n(config-isakmp)# group { 1 | 2 | 5 | 14 | 15 | 16 | 19 | 20 | 24 }<\/code><\/pre>\n\n\n\n<p><strong><span style=\"color:#0000ff\" class=\"swl-inline-color\"><span class=\"swl-marker mark_blue\">Priority\u5024\u306f\u30dd\u30ea\u30b7\u30fc\u306e\u512a\u5148\u5ea6<\/span><\/span><\/strong>\u3092\u8868\u3057\u3001<strong><span style=\"color:#0000ff\" class=\"swl-inline-color\"><span class=\"swl-marker mark_blue\">\uff11\u301c\uff11\uff10\uff10\uff10\u3067\u6307\u5b9a\u3067\u304d\u3001\u512a\u5148\u5ea6\u304c\u6700\u3082\u9ad8\u3044\u306e\u306f\u300c\uff11\u300d<\/span><\/span><\/strong>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u6307\u5b9a\u306f\u3001CCNP\u306e\u6559\u6750\u306b\u306f\uff15\u7a2e\u985e\u3050\u3089\u3044\u6307\u5b9a\u3067\u304d\u308b\u3068\u66f8\u3044\u3066\u3042\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u5b9f\u969b\uff13\u7a2e\u985e\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u30cf\u30c3\u30b7\u30e5\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\uff15\u3064\u6307\u5b9a\u53ef\u80fd\u3067\u3042\u308a\u3001\u8a8d\u8a3c\u65b9\u5f0f\u3068\u30b0\u30eb\u30fc\u30d7\u3092\u6307\u5b9a\u3059\u308c\u3070\u3001\u30dd\u30ea\u30b7\u30fc\u306e\u4f5c\u6210\u306f\u5b8c\u4e86\u3067\u3059\u3002<\/p>\n\n\n\n<p><span style=\"color:#008000\" class=\"swl-inline-color\"><strong><span class=\"swl-marker mark_green\">\u30b0\u30eb\u30fc\u30d7\u306e\u6307\u5b9a\u306f\u3001Diffie-Hellman\u306e\u4f55\u30d3\u30c3\u30c8\u3092\u5229\u7528\u3059\u308b\u304b\u3092\u6307\u5b9a\u3059\u308b\u305f\u3081\u306e\u8a2d\u5b9a<\/span><\/strong><\/span>\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<center><script language=\"javascript\" src=\"\/\/ad.jp.ap.valuecommerce.com\/servlet\/jsbanner?sid=3674307&#038;pid=890156179\"><\/script><noscript><a href=\"\/\/ck.jp.ap.valuecommerce.com\/servlet\/referral?sid=3674307&#038;pid=890156179\" rel=\"nofollow\"><img decoding=\"async\" src=\"\/\/ad.jp.ap.valuecommerce.com\/servlet\/gifbanner?sid=3674307&#038;pid=890156179\" border=\"0\"><\/a><\/noscript><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step2\uff1aPSK KEY\u306e\u4f5c\u6210\u3068\u8a2d\u5b9a\uff08Crypto\u30d5\u30a1\u30a4\u30eb\u30fbIPSec\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>(config)# crypto isakmp key &lt;\u30ad\u30fc\u6587\u5b57&gt; address &lt;\u30d4\u30a2\u5148\u306e\u30a2\u30c9\u30ec\u30b9&gt; &#91;mask]<\/code><\/pre>\n\n\n\n<p>\u3053\u306e<strong><span style=\"color:#0000ff\" class=\"swl-inline-color\"><span class=\"swl-marker mark_blue\">\u8a2d\u5b9a\u3067\u6307\u5b9a\u3059\u308b\u300c\u30ad\u30fc\u6587\u5b57\u300d\u306f\u30d4\u30a2\u53cc\u65b9\u3067\u540c\u4e00\u306e\u6587\u5b57\u5217\u3092\u6307\u5b9a<\/span><\/span><\/strong>\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001<strong><span style=\"color:#008000\" class=\"swl-inline-color\"><span class=\"swl-marker mark_green\">\u30d4\u30a2\u5148\u306f\u57fa\u672c\u7684\u306bGRE\u30c8\u30f3\u30cd\u30eb\u306e\u7269\u7406IF\u30a2\u30c9\u30ec\u30b9<\/span><\/span><\/strong>\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<center><!-- START MoshimoAffiliateEasyLink -->\n<script type=\"text\/javascript\">\n(function(b,c,f,g,a,d,e){b.MoshimoAffiliateObject=a;\nb[a]=b[a]||function(){arguments.currentScript=c.currentScript\n||c.scripts[c.scripts.length-2];(b[a].q=b[a].q||[]).push(arguments)};\nc.getElementById(a)||(d=c.createElement(f),d.src=g,\nd.id=a,e=c.getElementsByTagName(\"body\")[0],e.appendChild(d))})\n(window,document,\"script\",\"\/\/dn.msmstatic.com\/site\/cardlink\/bundle.js?20220329\",\"msmaflink\");\nmsmaflink({\"n\":\"\u30b7\u30b9\u30b3\u30b7\u30b9\u30c6\u30e0\u30ba (Cisco) \u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u30cf\u30d6 8\u30dd\u30fc\u30c8 \u30de\u30cd\u30fc\u30b8\u30c9\u30b9\u30a4\u30c3\u30c1 PoE\\\/PoE+ \u30ae\u30ac\u30d3\u30c3\u30c8 \u30b9\u30bf\u30c3\u30ab\u30d6\u30eb 802.1X\u8a8d\u8a3c RIP \u91d1\u5c5e\u7b50\",\"b\":\"\",\"t\":\"\",\"d\":\"https:\\\/\\\/thumbnail.image.rakuten.co.jp\",\"c_p\":\"\\\/@0_mall\\\/lovelonestar\\\/cabinet\\\/r_1598620054\",\"p\":[\"\\\/4919036540489.jpg\",\"\\\/4919036540489_2.jpg\",\"\\\/4919036540489_3.jpg\"],\"u\":{\"u\":\"https:\\\/\\\/item.rakuten.co.jp\\\/lovelonestar\\\/4919036540489\\\/\",\"t\":\"rakuten\",\"r_v\":\"\"},\"v\":\"2.1\",\"b_l\":[{\"id\":2,\"u_tx\":\"Amazon\u3067\u307f\u308b\",\"u_bc\":\"#f79256\",\"u_url\":\"https:\\\/\\\/amzn.to\\\/48lYkrP\",\"a_id\":0,\"p_id\":0,\"pl_id\":0,\"pc_id\":0,\"s_n\":\"custom_2\",\"u_so\":1},{\"id\":3,\"u_tx\":\"\u697d\u5929\u5e02\u5834\u3067\u898b\u308b\",\"u_bc\":\"#f76956\",\"u_url\":\"https:\\\/\\\/item.rakuten.co.jp\\\/lovelonestar\\\/4919036540489\\\/\",\"a_id\":3735106,\"p_id\":54,\"pl_id\":27059,\"pc_id\":54,\"s_n\":\"rakuten\",\"u_so\":2}],\"eid\":\"HxIpp\",\"s\":\"l\"});\n<\/script>\n<div id=\"msmaflink-HxIpp\">\u30ea\u30f3\u30af<\/div>\n<!-- MoshimoAffiliateEasyLink END --><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step3\uff1a\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30e0\u30bb\u30c3\u30c8\u306e\u8a2d\u5b9a\uff08Crypto\u30d5\u30a1\u30a4\u30eb\u30fbIPSec\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>(config)# crypto ipsec transform-set &lt;\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30e0\u30bb\u30c3\u30c8\u540d&gt; &lt;AH\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0&gt; &lt;ESP\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0&gt;\n(cfg-crypto-trans)# mode &#91; tunnel | transport ]<\/code><\/pre>\n\n\n\n<p>\u3053\u3053\u3067\u306f\u3001<strong>IPSec\u306e\u30e2\u30fc\u30c9\u6307\u5b9a\u3084AH\u30fbESP\u3067\u5229\u7528\u3059\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u6307\u5b9a<\/strong>\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u5019\u88dc\u304c\u591a\u3044\u305f\u3081\u3001\u5b9f\u969b\u306e\u5b9f\u6a5f\u3067\u78ba\u8a8d\u3044\u305f\u3060\u3051\u308c\u3070\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<center><!-- START MoshimoAffiliateEasyLink -->\n<script type=\"text\/javascript\">\n(function(b,c,f,g,a,d,e){b.MoshimoAffiliateObject=a;\nb[a]=b[a]||function(){arguments.currentScript=c.currentScript\n||c.scripts[c.scripts.length-2];(b[a].q=b[a].q||[]).push(arguments)};\nc.getElementById(a)||(d=c.createElement(f),d.src=g,\nd.id=a,e=c.getElementsByTagName(\"body\")[0],e.appendChild(d))})\n(window,document,\"script\",\"\/\/dn.msmstatic.com\/site\/cardlink\/bundle.js?20220329\",\"msmaflink\");\nmsmaflink({\"n\":\"\u30b7\u30b9\u30b3\u30b7\u30b9\u30c6\u30e0\u30ba (Cisco) Meraki Go Wi-Fi\u30a2\u30af\u30bb\u30b9\u30dd\u30a4\u30f3\u30c8 (GR10) PoE\u5bfe\u5fdc \u30c7\u30e5\u30a2\u30eb\u30d0\u30f3\u30c9\\\/802.11ac \u9001\u6599\u7121\u6599\u3010BB\u3011\",\"b\":\"\",\"t\":\"\",\"d\":\"https:\\\/\\\/thumbnail.image.rakuten.co.jp\",\"c_p\":\"\\\/@0_mall\\\/kyoshin-m\\\/cabinet\\\/amayahoo\\\/10409733\",\"p\":[\"\\\/0687-010021.jpg\",\"\\\/0687-010021_1.jpg\",\"\\\/0687-010021_2.jpg\"],\"u\":{\"u\":\"https:\\\/\\\/item.rakuten.co.jp\\\/kyoshin-m\\\/0687-010021\\\/\",\"t\":\"rakuten\",\"r_v\":\"\"},\"v\":\"2.1\",\"b_l\":[{\"id\":2,\"u_tx\":\"Amazon\u3067\u307f\u308b\",\"u_bc\":\"#f79256\",\"u_url\":\"https:\\\/\\\/amzn.to\\\/3RvHUFN\",\"a_id\":0,\"p_id\":0,\"pl_id\":0,\"pc_id\":0,\"s_n\":\"custom_2\",\"u_so\":1},{\"id\":3,\"u_tx\":\"\u697d\u5929\u5e02\u5834\u3067\u898b\u308b\",\"u_bc\":\"#f76956\",\"u_url\":\"https:\\\/\\\/item.rakuten.co.jp\\\/kyoshin-m\\\/0687-010021\\\/\",\"a_id\":3735106,\"p_id\":54,\"pl_id\":27059,\"pc_id\":54,\"s_n\":\"rakuten\",\"u_so\":2}],\"eid\":\"nbVxV\",\"s\":\"l\"});\n<\/script>\n<div id=\"msmaflink-nbVxV\">\u30ea\u30f3\u30af<\/div>\n<!-- MoshimoAffiliateEasyLink END --><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step4-1\uff1aCrypto Map\u306e\u4f5c\u6210\u3068\u8a2d\u5b9a\uff08Crypto\u30d5\u30a1\u30a4\u30eb\u306e\u307f\u5bfe\u5fdc\uff09<\/h3>\n\n\n\n<p>\u3053\u3053\u3067\u306fStep0\u301cStep3\u3067\u4f5c\u6210\u3057\u3066\u304d\u305f\u3082\u306e\u3092Crypto Map\u3067\u9069\u7528\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>(config)# crypto map &lt;map\u540d&gt; &lt;seq\u756a\u53f7&gt; &#91; ipsec-isakmp]\n(config-crypto-map)#match address &lt;ACL\u540d&gt; \nRouter1(config-crypto-map)#set peer &lt;\u30d4\u30a2\u5148\u30a2\u30c9\u30ec\u30b9&gt;\nRouter1(config-crypto-map)#set transform-set &lt;transform\u540d&gt;\nRouter1(config-crypto-map)#end<\/code><\/pre>\n\n\n\n<p><strong>ACL\u540d\u306fStep0\u3067\u4f5c\u6210\u3057\u305fACL\u3092\u9069\u7528\u3057\u3001\u30d4\u30a2\u5148\u30a2\u30c9\u30ec\u30b9\u306fGRE\u30c8\u30f3\u30cd\u30eb\u3092\u5f35\u3063\u3066\u3044\u308b\u5bfe\u5411\u306e\u7269\u7406IF\u30a2\u30c9\u30ec\u30b9<\/strong>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001<strong>\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30e0\u30bb\u30c3\u30c8\u306fStep3\u3067\u4f5c\u6210\u3057\u305f\u3082\u306e\u3092\u9069\u7528<\/strong>\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<center><a href=\"\/\/af.moshimo.com\/af\/c\/click?a_id=4379155&#038;p_id=924&#038;pc_id=1151&#038;pl_id=20426\" rel=\"nofollow\" referrerpolicy=\"no-referrer-when-downgrade\"><img decoding=\"async\" src=\"\/\/image.moshimo.com\/af-img\/0278\/000000020426.jpg\" width=\"468\" height=\"60\" style=\"border:none;\"><\/a><img decoding=\"async\" src=\"\/\/i.moshimo.com\/af\/i\/impression?a_id=4379155&#038;p_id=924&#038;pc_id=1151&#038;pl_id=20426\" width=\"1\" height=\"1\" style=\"border:none;\"><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step4-2\uff1aIPSec\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u4f5c\u6210\u3068\u8a2d\u5b9a\uff08IPSec\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u307f\u5bfe\u5fdc\uff09<\/h3>\n\n\n\n<p><strong>IPSec\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306b\u3088\u308b\u8a2d\u5b9a\u306e\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30e0\u540d\u3092\u8a2d\u5b9a\u3059\u308b\u306e\u307f<\/strong>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>(config)# crypto ipsec profile &lt;IPSec\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u540d&gt;\n(ipsec-profile)# set transform-set &lt;\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30e0\u540d&gt;<\/code><\/pre>\n\n\n\n<center><!-- 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(C1200-48T-4G\",\"b\":\"\",\"t\":\"\",\"d\":\"https:\\\/\\\/thumbnail.image.rakuten.co.jp\",\"c_p\":\"\\\/@0_mall\\\/lovelonestar\\\/cabinet\\\/r_1598620054\",\"p\":[\"\\\/4919036540494.jpg\",\"\\\/4919036540494_2.jpg\"],\"u\":{\"u\":\"https:\\\/\\\/item.rakuten.co.jp\\\/lovelonestar\\\/4919036540494\\\/\",\"t\":\"rakuten\",\"r_v\":\"\"},\"v\":\"2.1\",\"b_l\":[{\"id\":2,\"u_tx\":\"Amazon\u3067\u307f\u308b\",\"u_bc\":\"#f79256\",\"u_url\":\"https:\\\/\\\/amzn.to\\\/3HcgWi1\",\"a_id\":0,\"p_id\":0,\"pl_id\":0,\"pc_id\":0,\"s_n\":\"custom_2\",\"u_so\":1},{\"id\":3,\"u_tx\":\"\u697d\u5929\u5e02\u5834\u3067\u898b\u308b\",\"u_bc\":\"#f76956\",\"u_url\":\"https:\\\/\\\/item.rakuten.co.jp\\\/lovelonestar\\\/4919036540494\\\/\",\"a_id\":3735106,\"p_id\":54,\"pl_id\":27059,\"pc_id\":54,\"s_n\":\"rakuten\",\"u_so\":2}],\"eid\":\"8e1fk\",\"s\":\"l\"});\n<\/script>\n<div id=\"msmaflink-8e1fk\">\u30ea\u30f3\u30af<\/div>\n<!-- MoshimoAffiliateEasyLink END --><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step5-1\uff1aCrypto Map\u306e\u9069\u7528\uff08Crypto\u30d5\u30a1\u30a4\u30eb\u306e\u307f\u5bfe\u5fdc\uff09<\/h3>\n\n\n\n<p>\u6700\u5f8c\u306b<strong><span style=\"color:#0000ff\" class=\"swl-inline-color\"><span class=\"swl-marker mark_blue\">GRE\u3067\u4f7f\u3063\u3066\u3044\u308b\u7269\u7406IF\u306b\u5bfe\u3057\u3001Crypto Map\u3092\u9069\u7528\u3057\u3066\u3042\u3052\u308b\u3053\u3068\u3067GRE over IPSec\u306e\u8a2d\u5b9a\u304c\u5b8c\u4e86<\/span><\/span><\/strong>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>(config)# interface &lt;IF\u540d&gt;\n(config-if)# crypto map &lt;crypto map\u540d&gt;<\/code><\/pre>\n\n\n\n<center><!-- START MoshimoAffiliateEasyLink -->\n<script type=\"text\/javascript\">\n(function(b,c,f,g,a,d,e){b.MoshimoAffiliateObject=a;\nb[a]=b[a]||function(){arguments.currentScript=c.currentScript\n||c.scripts[c.scripts.length-2];(b[a].q=b[a].q||[]).push(arguments)};\nc.getElementById(a)||(d=c.createElement(f),d.src=g,\nd.id=a,e=c.getElementsByTagName(\"body\")[0],e.appendChild(d))})\n(window,document,\"script\",\"\/\/dn.msmstatic.com\/site\/cardlink\/bundle.js?20220329\",\"msmaflink\");\nmsmaflink({\"n\":\"Cisco Systems Cisco Catalyst 2960S-48TS-L WS-C2960S-48TS-L 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class=\"wp-block-heading\">Step5-2\uff1aIPSec\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u9069\u7528<\/h3>\n\n\n\n<p><strong><span style=\"color:#0000ff\" class=\"swl-inline-color\"><span class=\"swl-marker mark_blue\">IPSec\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u5834\u5408\u306f\u3001\u7269\u7406IF\u3067\u306f\u306a\u304fTunnel IF\u306b\u5bfe\u3057IPSec\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u9069\u7528\u3057\u3066\u3042\u3052\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/span><\/span><\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>(config)# interface &lt;IF\u540d&gt;\n(config-if)# tunnel protection ipsec profile &lt;\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u540d&gt;<\/code><\/pre>\n\n\n\n<center><a href=\"https:\/\/px.a8.net\/svt\/ejp?a8mat=3YYD8O+37I44Y+3IB8+60WN5\" rel=\"nofollow\">\n<img decoding=\"async\" border=\"0\" width=\"728\" height=\"90\" alt=\"\" src=\"https:\/\/www22.a8.net\/svt\/bgt?aid=240108936194&#038;wid=001&#038;eno=01&#038;mid=s00000016370001012000&#038;mc=1\"><\/a>\n<img decoding=\"async\" border=\"0\" width=\"1\" height=\"1\" src=\"https:\/\/www17.a8.net\/0.gif?a8mat=3YYD8O+37I44Y+3IB8+60WN5\" alt=\"\"><\/center>\n\n\n\n<h2 class=\"wp-block-heading\">IOS\u3092\u4f7f\u3063\u3066\u5b9f\u6a5f\u78ba\u8a8d\u3057\u3066\u307f\u3088\u3046<\/h2>\n\n\n\n<p>\u4eca\u56de\u7528\u3044\u305f\u69cb\u6210\u306f\u524d\u56de\u306eGRE\u306e\u8a18\u4e8b\u3068\u307b\u307c\u540c\u69d8\u3067\u3059\u3002\uff08\u4e00\u90e8IP\u30a2\u30c9\u30ec\u30b9\u304c\u7570\u306a\u308a\u307e\u3059\u304c\uff09<\/p>\n\n\n\n<p>\u524d\u56de\u540c\u69d8\u3001ISP1\u3068ISP2\u306e\u9593\u306fOSPF\u304c\u8d70\u3063\u3066\u304a\u308a\u3001Router1\u3068ISP1\u9593\u3001Router2\u3068ISP2\u9593\u306f\u7279\u306b\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u52d5\u3044\u3066\u304a\u3089\u305a\u3001Router1\u3068Router2\u9593GRE\u3092\u5f35\u3063\u3066\u3044\u308b\u69cb\u6210\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<center><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" version=\"1.1\" width=\"1245px\" viewBox=\"-0.5 -0.5 1245 192\" content=\"&lt;mxfile host=&quot;Electron&quot; 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line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">Lo0\uff1a10.1.0.1\/32<\/div><\/div><\/div><\/foreignObject><text x=\"75\" y=\"49\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\">Lo0\uff1a10.1.0.1\/32<\/text><\/switch><\/g><rect x=\"1095\" y=\"29\" width=\"150\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 148px; height: 1px; padding-top: 44px; margin-left: 1096px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">Lo0\uff1a10.1.0.4\/32<\/div><\/div><\/div><\/foreignObject><text x=\"1170\" y=\"49\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\">Lo0\uff1a10.1.0.4\/32<\/text><\/switch><\/g><rect x=\"885\" y=\"92\" width=\"40\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 38px; height: 1px; padding-top: 107px; margin-left: 886px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">.1<\/div><\/div><\/div><\/foreignObject><text x=\"905\" y=\"112\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\">.1<\/text><\/switch><\/g><rect x=\"1085\" y=\"92\" width=\"40\" height=\"29\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 38px; height: 1px; padding-top: 107px; margin-left: 1086px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">.2<\/div><\/div><\/div><\/foreignObject><text x=\"1105\" y=\"111\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\">.2<\/text><\/switch><\/g><rect x=\"885\" y=\"121\" width=\"40\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 38px; height: 1px; padding-top: 136px; margin-left: 886px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">Gi0\/1<\/div><\/div><\/div><\/foreignObject><text x=\"905\" y=\"141\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\">Gi0\/1<\/text><\/switch><\/g><rect x=\"1085\" y=\"121\" width=\"40\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 38px; height: 1px; padding-top: 136px; margin-left: 1086px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">Gi0\/1<\/div><\/div><\/div><\/foreignObject><text x=\"1105\" y=\"141\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\">Gi0\/1<\/text><\/switch><\/g><rect x=\"895\" y=\"54\" width=\"220\" height=\"30\" fill=\"none\" stroke=\"none\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 218px; height: 1px; padding-top: 69px; margin-left: 896px;\"><div data-drawio-colors=\"color: rgb(0, 0, 0); \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;\">10.3.0.0\/30<\/div><\/div><\/div><\/foreignObject><text x=\"1005\" y=\"74\" fill=\"rgb(0, 0, 0)\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\">10.3.0.0\/30<\/text><\/switch><\/g><path d=\"M 614 -396 C 614 -404.28 618.03 -411 623 -411 C 625.39 -411 627.68 -409.42 629.36 -406.61 C 631.05 -403.79 632 -399.98 632 -396 L 632 574 C 632 582.28 627.97 589 623 589 C 618.03 589 614 582.28 614 574 Z\" fill-opacity=\"0.7\" fill=\"#ff0000\" stroke=\"#000000\" stroke-opacity=\"0.7\" stroke-width=\"2\" stroke-miterlimit=\"10\" transform=\"rotate(90,623,89)\" pointer-events=\"all\"\/><path d=\"M 632 -396 C 632 -387.72 627.97 -381 623 -381 C 618.03 -381 614 -387.72 614 -396\" fill=\"none\" stroke=\"#000000\" stroke-opacity=\"0.7\" stroke-width=\"2\" stroke-miterlimit=\"10\" transform=\"rotate(90,623,89)\" pointer-events=\"all\"\/><rect x=\"535\" y=\"160\" width=\"220\" height=\"30\" fill=\"none\" stroke=\"#ff0000\" stroke-width=\"2\" pointer-events=\"all\"\/><g transform=\"translate(-0.5 -0.5)\"><switch><foreignObject pointer-events=\"none\" width=\"100%\" height=\"100%\" requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\" style=\"overflow: visible; text-align: left;\"><div xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" style=\"display: flex; align-items: unsafe center; justify-content: unsafe center; width: 218px; height: 1px; padding-top: 175px; margin-left: 536px;\"><div data-drawio-colors=\"color: #FF0000; \" style=\"box-sizing: border-box; font-size: 0px; text-align: center;\"><div style=\"display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 0, 0); line-height: 1.2; pointer-events: all; font-weight: bold; white-space: normal; overflow-wrap: normal;\">GRE\u30c8\u30f3\u30cd\u30eb<\/div><\/div><\/div><\/foreignObject><text x=\"645\" y=\"180\" fill=\"#FF0000\" font-family=\"Helvetica\" font-size=\"16px\" text-anchor=\"middle\" font-weight=\"bold\">GRE\u30c8\u30f3\u30cd\u30eb<\/text><\/switch><\/g><\/g><switch><g requiredFeatures=\"http:\/\/www.w3.org\/TR\/SVG11\/feature#Extensibility\"\/><a transform=\"translate(0,-5)\" xlink:href=\"https:\/\/www.drawio.com\/doc\/faq\/svg-export-text-problems\" target=\"_blank\" rel=\"noopener\"><text text-anchor=\"middle\" font-size=\"10px\" x=\"50%\" y=\"100%\">Text is not SVG &#8211; cannot display<\/text><\/a><\/switch><\/svg><\/center>\n\n\n\n<p>\u3053\u306e\u70b9\u306b\u95a2\u3057\u3066\u3082\u524d\u56de\u306e\u8a18\u4e8b\u3068\u540c\u3058\u306a\u306e\u3067\u3053\u3053\u3067\u306f\u8aac\u660e\u3092\u5272\u611b\u3057\u307e\u3059\u3002<\/p>\n\n\n<div class=\"swell-block-postLink\">\t\t\t<div class=\"p-blogCard -external -noimg\" data-type=\"type3\" data-onclick=\"clickLink\">\n\t\t\t\t<div class=\"p-blogCard__inner\">\n\t\t\t\t\t<span class=\"p-blogCard__caption\">\u3042\u308f\u305b\u3066\u8aad\u307f\u305f\u3044<\/span>\n\t\t\t\t\t\t\t\t\t\t<div class=\"p-blogCard__body\">\n\t\t\t\t\t\t<a class=\"p-blogCard__title\" href=\"https:\/\/daimaru-tech-blog.com\/?p=1437\" target=\"_blank\" rel=\"noopener noreferrer\">\u3010\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5165\u9580\u3011GRE\uff08Generic Routing Encapsulation\uff09\u306b\u3064\u3044\u3066 \u2013 \u3060\u3044\u307e\u308b\u30d6\u30ed\u30b0<\/a>\n\t\t\t\t\t\t<span class=\"p-blogCard__excerpt\"><\/span>\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\n<p>GRE\u306e\u8a2d\u5b9a\u306f\u7d42\u3048\u3066\u3044\u308b\u524d\u63d0\u3068\u3057\u305f\u4e0a\u3067\u3001IPSec\u306e\u8a2d\u5b9a\u3092\u884c\u306a\u3063\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306fIPSec\u306eCrypto\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u3063\u305f\u8a2d\u5b9a\u3067\u78ba\u8a8d\u3092\u884c\u306a\u3063\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<center><a href=\"https:\/\/px.a8.net\/svt\/ejp?a8mat=3YYD8O+6VOCFM+2VMU+66WOX\" rel=\"nofollow\">\n<img decoding=\"async\" border=\"0\" width=\"728\" height=\"90\" alt=\"\" src=\"https:\/\/www21.a8.net\/svt\/bgt?aid=240108936416&#038;wid=001&#038;eno=01&#038;mid=s00000013431001040000&#038;mc=1\"><\/a>\n<img decoding=\"async\" border=\"0\" width=\"1\" height=\"1\" src=\"https:\/\/www12.a8.net\/0.gif?a8mat=3YYD8O+6VOCFM+2VMU+66WOX\" alt=\"\"><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step0\uff1aIPSec\u306e\u5bfe\u8c61\u3068\u306a\u308bACL\u5b9a\u7fa9<\/h3>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>Router1#conf t\nEnter configuration commands, one per line.  End with CNTL\/Z.\nRouter1(config)#ip access-list extended IPSec_Test\nRouter1(config-ext-nacl)#permit gre host 10.2.0.2 host 10.3.0.2\nRouter1(config-ext-nacl)#end<\/code><\/pre>\n\n\n\n<p>IPSec\u306e\u5bfe\u8c61\u3068\u306a\u308bACL\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304cCrypto\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u3063\u305f\u8a2d\u5b9a\u3067\u306f\u5fc5\u8981\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>GRE\u30c8\u30f3\u30cd\u30eb\u306e\u59cb\u70b9\u3068\u7d42\u70b9\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u305d\u306e\u30c8\u30f3\u30cd\u30eb\u3092\u901a\u904e\u3059\u308b\u30d1\u30b1\u30c3\u30c8\u304cIPSec\u306e\u5bfe\u8c61\u3068\u306a\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<center><!-- START MoshimoAffiliateEasyLink -->\n<script type=\"text\/javascript\">\n(function(b,c,f,g,a,d,e){b.MoshimoAffiliateObject=a;\nb[a]=b[a]||function(){arguments.currentScript=c.currentScript\n||c.scripts[c.scripts.length-2];(b[a].q=b[a].q||[]).push(arguments)};\nc.getElementById(a)||(d=c.createElement(f),d.src=g,\nd.id=a,e=c.getElementsByTagName(\"body\")[0],e.appendChild(d))})\n(window,document,\"script\",\"\/\/dn.msmstatic.com\/site\/cardlink\/bundle.js?20220329\",\"msmaflink\");\nmsmaflink({\"n\":\"\u30b7\u30b9\u30b3\u30b7\u30b9\u30c6\u30e0\u30ba (Cisco) \u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u30cf\u30d6 8\u30dd\u30fc\u30c8 \u30de\u30cd\u30fc\u30b8\u30c9\u30b9\u30a4\u30c3\u30c1 PoE\\\/PoE+ \u30ae\u30ac\u30d3\u30c3\u30c8 \u30b9\u30bf\u30c3\u30ab\u30d6\u30eb 802.1X\u8a8d\u8a3c RIP \u91d1\u5c5e\u7b50\",\"b\":\"\",\"t\":\"\",\"d\":\"https:\\\/\\\/thumbnail.image.rakuten.co.jp\",\"c_p\":\"\\\/@0_mall\\\/lovelonestar\\\/cabinet\\\/r_1598620054\",\"p\":[\"\\\/4919036540489.jpg\",\"\\\/4919036540489_2.jpg\",\"\\\/4919036540489_3.jpg\"],\"u\":{\"u\":\"https:\\\/\\\/item.rakuten.co.jp\\\/lovelonestar\\\/4919036540489\\\/\",\"t\":\"rakuten\",\"r_v\":\"\"},\"v\":\"2.1\",\"b_l\":[{\"id\":2,\"u_tx\":\"Amazon\u3067\u307f\u308b\",\"u_bc\":\"#f79256\",\"u_url\":\"https:\\\/\\\/amzn.to\\\/48lYkrP\",\"a_id\":0,\"p_id\":0,\"pl_id\":0,\"pc_id\":0,\"s_n\":\"custom_2\",\"u_so\":1},{\"id\":3,\"u_tx\":\"\u697d\u5929\u5e02\u5834\u3067\u898b\u308b\",\"u_bc\":\"#f76956\",\"u_url\":\"https:\\\/\\\/item.rakuten.co.jp\\\/lovelonestar\\\/4919036540489\\\/\",\"a_id\":3735106,\"p_id\":54,\"pl_id\":27059,\"pc_id\":54,\"s_n\":\"rakuten\",\"u_so\":2}],\"eid\":\"HxIpp\",\"s\":\"l\"});\n<\/script>\n<div id=\"msmaflink-HxIpp\">\u30ea\u30f3\u30af<\/div>\n<!-- MoshimoAffiliateEasyLink END --><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step1\uff1aISAKMP\u30dd\u30ea\u30b7\u30fc\u306e\u4f5c\u6210<\/h3>\n\n\n\n<p>\u57fa\u672c\u8a2d\u5b9a\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u8aac\u660e\u3057\u305f\u901a\u308a\u306b\u8a2d\u5b9a\u3059\u308b\u306e\u3067\u3059\u304c\u3001\u4eca\u56de\u306fencryption\u3092\u300caes\u300d\u3001hash\u3092\u300csha256\u300d\u3001authentication\u3092\u300cpre-share\u300d\u3068\u3057\u3001\u30b0\u30eb\u30fc\u30d7\u756a\u53f7\u3092\u300c14\u300d\u3067\u6307\u5b9a\u3057\u3066\u304a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>Router1#conf t\nEnter configuration commands, one per line.  End with CNTL\/Z.\nRouter1(config)#crypto isakmp policy 1\nRouter1(config-isakmp)#encryption ?\n  3des  Three key triple DES\n  aes   AES - Advanced Encryption Standard.\n  des   DES - Data Encryption Standard (56 bit keys).\n\nRouter1(config-isakmp)#encryption aes\nRouter1(config-isakmp)#hash ?\n  md5     Message Digest 5\n  sha     Secure Hash Standard\n  sha256  Secure Hash Standard 2 (256 bit)\n  sha384  Secure Hash Standard 2 (384 bit)\n  sha512  Secure Hash Standard 2 (512 bit)\n\nRouter1(config-isakmp)#hash sha256\nRouter1(config-isakmp)#authentication ?\n  pre-share  Pre-Shared Key\n  rsa-encr   Rivest-Shamir-Adleman Encryption\n  rsa-sig    Rivest-Shamir-Adleman Signature\n\nRouter1(config-isakmp)#authentication pre\nRouter1(config-isakmp)#authentication pre-share\nRouter1(config-isakmp)#group ?\n  1   Diffie-Hellman group 1 (768 bit)\n  14  Diffie-Hellman group 14 (2048 bit)\n  15  Diffie-Hellman group 15 (3072 bit)\n  16  Diffie-Hellman group 16 (4096 bit)\n  19  Diffie-Hellman group 19 (256 bit ecp)\n  2   Diffie-Hellman group 2 (1024 bit)\n  20  Diffie-Hellman group 20 (384 bit ecp)\n  21  Diffie-Hellman group 21 (521 bit ecp)\n  24  Diffie-Hellman group 24 (2048 bit, 256 bit subgroup)\n  5   Diffie-Hellman group 5 (1536 bit)\nRouter1(config-isakmp)#group 14<\/code><\/pre>\n\n\n\n<center><a href=\"\/\/af.moshimo.com\/af\/c\/click?a_id=3735107&#038;p_id=4441&#038;pc_id=11518&#038;pl_id=59884\" rel=\"nofollow\" referrerpolicy=\"no-referrer-when-downgrade\"><img decoding=\"async\" src=\"\/\/image.moshimo.com\/af-img\/1682\/000000059884.jpg\" width=\"790\" height=\"444\" style=\"border:none;\"><\/a><img decoding=\"async\" src=\"\/\/i.moshimo.com\/af\/i\/impression?a_id=3735107&#038;p_id=4441&#038;pc_id=11518&#038;pl_id=59884\" width=\"1\" height=\"1\" style=\"border:none;\"><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step2\uff1aPSK KEY\u306e\u4f5c\u6210\u3068\u8a2d\u5b9a<\/h3>\n\n\n\n<p>PSK KEY\u306e\u4f5c\u6210\u3068\u8a2d\u5b9a\u3067\u306fRouter1\u304b\u3089\u898b\u305f\u30ea\u30e2\u30fc\u30c8\u306e\u30d4\u30a2\u5148\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>Router1(config)#crypto isakmp key ipsec_test address 10.3.0.2 255.255.255.252\nRouter1(config)#end<\/code><\/pre>\n\n\n\n<center><a href=\"https:\/\/px.a8.net\/svt\/ejp?a8mat=3NPCWG+DUX9PU+50+2HN8K1\" rel=\"nofollow\">\n<img decoding=\"async\" border=\"0\" width=\"728\" height=\"90\" alt=\"\" src=\"https:\/\/www20.a8.net\/svt\/bgt?aid=221212816838&#038;wid=001&#038;eno=01&#038;mid=s00000000018015057000&#038;mc=1\"><\/a>\n<img decoding=\"async\" border=\"0\" width=\"1\" height=\"1\" src=\"https:\/\/www11.a8.net\/0.gif?a8mat=3NPCWG+DUX9PU+50+2HN8K1\" alt=\"\"><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step3\uff1a\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30e0\u30bb\u30c3\u30c8\u306e\u8a2d\u5b9a\uff08Crypto\u30d5\u30a1\u30a4\u30eb\u30fbIPSec\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\uff09<\/h3>\n\n\n\n<p>\u4eca\u56de\u306f\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>Router2#conf t\nEnter configuration commands, one per line.  End with CNTL\/Z.\nRouter2(config)#crypto ipsec transform-set ipsec_test ah-sha-hmac esp-aes\nRouter2(cfg-crypto-trans)#mode tunnel\nRouter2(cfg-crypto-trans)#end<\/code><\/pre>\n\n\n\n<center><a href=\"https:\/\/px.a8.net\/svt\/ejp?a8mat=3YYNIM+6W9S1E+2PEO+1ICG3L\" rel=\"nofollow\">\n<img decoding=\"async\" border=\"0\" width=\"936\" height=\"120\" alt=\"\" src=\"https:\/\/www29.a8.net\/svt\/bgt?aid=240122254417&#038;wid=001&#038;eno=01&#038;mid=s00000012624009128000&#038;mc=1\"><\/a>\n<img decoding=\"async\" border=\"0\" width=\"1\" height=\"1\" src=\"https:\/\/www15.a8.net\/0.gif?a8mat=3YYNIM+6W9S1E+2PEO+1ICG3L\" alt=\"\"><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step4\uff1aCrypto Map\u306e\u4f5c\u6210\u3068\u8a2d\u5b9a\uff08Crypto\u30d5\u30a1\u30a4\u30eb\u306e\u307f\u5bfe\u5fdc\uff09<\/h3>\n\n\n\n<p>\u30d4\u30a2\u5148\u306f\u5148\u307b\u3069\u304b\u3089\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u300c10.3.0.2\u300d\u3068\u306a\u308a\u3001\u4eca\u56de\u306e\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30e0\u540d\u306f\u300cipsec_test\u300d\u3068\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>Router1(config)#crypto map ipsec_map_test 1 ipsec-isakmp\n% NOTE: This new crypto map will remain disabled until a peer\n\tand a valid access list have been configured.\nRouter1(config-crypto-map)#match address IPsec_Test\nRouter1(config-crypto-map)#set peer 10.3.0.2\nRouter1(config-crypto-map)#set transform-set ipsec_test\nRouter1(config-crypto-map)#end<\/code><\/pre>\n\n\n\n<center><a href=\"https:\/\/px.a8.net\/svt\/ejp?a8mat=3TJKK1+EAEJG2+50+3I41CX\" rel=\"nofollow\">\n<img decoding=\"async\" border=\"0\" width=\"728\" height=\"90\" alt=\"\" src=\"https:\/\/www23.a8.net\/svt\/bgt?aid=231020497864&#038;wid=001&#038;eno=01&#038;mid=s00000000018021182000&#038;mc=1\"><\/a>\n<img decoding=\"async\" border=\"0\" width=\"1\" height=\"1\" src=\"https:\/\/www10.a8.net\/0.gif?a8mat=3TJKK1+EAEJG2+50+3I41CX\" alt=\"\"><\/center>\n\n\n\n<h3 class=\"wp-block-heading\">Step5\uff1aCrypto Map\u306e\u9069\u7528<\/h3>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>Router1#conf t\nEnter configuration commands, one per line.  End with CNTL\/Z.\nRouter1(config)#interface gigabitEthernet 0\/1\nRouter1(config-if)#crypto map ipsec_map_test\nRouter1(config-if)#end<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u72b6\u614b\u78ba\u8a8d<\/h3>\n\n\n\n<pre class=\"wp-block-code has-black-background-color has-background\"><code>\nRouter1#show ip ospf neighbor\n\nNeighbor ID     Pri   State           Dead Time   Address         Interface\n10.1.0.4          0   FULL\/  -        00:00:36    192.168.100.2   Tunnel0\nRouter1#show ip route ospf\nCodes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP\n       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area\n       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2\n       E1 - OSPF external type 1, E2 - OSPF external type 2\n       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2\n       ia - IS-IS inter area, * - candidate default, U - per-user static route\n       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP\n       a - application route\n       + - replicated route, % - next hop override, p - overrides from PfR\n\nGateway of last resort is 10.2.0.1 to network 0.0.0.0\n\n      10.0.0.0\/8 is variably subnetted, 4 subnets, 2 masks\nO        10.1.0.4\/32 &#91;110\/1001] via 192.168.100.2, 00:02:29, Tunnel0\n\nRouter1#show crypto isakmp sa detail\nCodes: C - IKE configuration mode, D - Dead Peer Detection\n       K - Keepalives, N - NAT-traversal\n       T - cTCP encapsulation, X - IKE Extended Authentication\n       psk - Preshared key, rsig - RSA signature\n       renc - RSA encryption\nIPv4 Crypto ISAKMP SA\n\nC-id  Local           Remote          I-VRF  Status Encr Hash   Auth DH Lifetime Cap.\n\n1001  10.2.0.2        10.3.0.2               ACTIVE aes  sha256 psk  14 23:57:05\n       Engine-id:Conn-id =  SW:1\n\nIPv6 Crypto ISAKMP SA\n\nRouter1#\n\nRouter1#show crypto ipsec sa\n\ninterface: GigabitEthernet0\/1\n    Crypto map tag: ipsec_map_test, local addr 10.2.0.2\n\n   protected vrf: (none)\n   local  ident (addr\/mask\/prot\/port): (10.2.0.2\/255.255.255.255\/47\/0)\n   remote ident (addr\/mask\/prot\/port): (10.3.0.2\/255.255.255.255\/47\/0)\n   current_peer 10.3.0.2 port 500\n     PERMIT, flags={origin_is_acl,}\n    #pkts encaps: 1058, #pkts encrypt: 1058, #pkts digest: 1058\n    #pkts decaps: 1058, #pkts decrypt: 1058, #pkts verify: 1058\n    #pkts compressed: 0, #pkts decompressed: 0\n    #pkts not compressed: 0, #pkts compr. failed: 0\n    #pkts not decompressed: 0, #pkts decompress failed: 0\n    #send errors 0, #recv errors 0\n\n     local crypto endpt.: 10.2.0.2, remote crypto endpt.: 10.3.0.2\n     plaintext mtu 1422, path mtu 1500, ip mtu 1500, ip mtu idb GigabitEthernet0\/1\n     current outbound spi: 0x99AF012C(2578383148)\n     PFS (Y\/N): N, DH group: none\n\n     inbound esp sas:\n      spi: 0xCCEDEBB5(3438144437)\n        transform: esp-aes ,\n        in use settings ={Tunnel, }\n        conn id: 1, flow_id: SW:1, sibling_flags 80004070, crypto map: ipsec_map_test\n        sa timing: remaining key lifetime (k\/sec): (4356814\/3117)\n        IV size: 16 bytes\n        replay detection support: Y\n        Status: ACTIVE(ACTIVE)\n\n     inbound ah sas:\n      spi: 0xEEF91E17(4009303575)\n        transform: ah-sha-hmac ,\n        in use settings ={Tunnel, }\n        conn id: 1, flow_id: SW:1, sibling_flags 80004070, crypto map: ipsec_map_test\n        sa timing: remaining key lifetime (k\/sec): (4356814\/3117)\n        replay detection support: Y\n        Status: ACTIVE(ACTIVE)\n\n     inbound pcp sas:\n\n     outbound esp sas:\n      spi: 0x91AEC91B(2444151067)\n        transform: esp-aes ,\n        in use settings ={Tunnel, }\n        conn id: 2, flow_id: SW:2, sibling_flags 80004070, crypto map: ipsec_map_test\n        sa timing: remaining key lifetime (k\/sec): (4356814\/3117)\n        IV size: 16 bytes\n        replay detection support: Y\n        Status: ACTIVE(ACTIVE)\n\n     outbound ah sas:\n      spi: 0x99AF012C(2578383148)\n        transform: ah-sha-hmac ,\n        in use settings ={Tunnel, }\n        conn id: 2, flow_id: SW:2, sibling_flags 80004070, crypto map: ipsec_map_test\n        sa timing: remaining key lifetime (k\/sec): (4356814\/3117)\n        replay detection support: Y\n        Status: ACTIVE(ACTIVE)\n\n     outbound pcp sas:<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u3067\u306f\u3001<strong><span style=\"color:#0000ff\" class=\"swl-inline-color\"><span class=\"swl-marker mark_blue\">GRE over IPSec\u306e\u8a2d\u5b9a\u5b8c\u4e86\u5f8c\u306eOSPF\u30cd\u30a4\u30d0\u30fc\u304c\u3042\u304c\u3063\u3066\u3044\u308b\u70b9\u3068OSPF\u306e\u7d4c\u8def\u3092\u3082\u3089\u3063\u3066\u3044\u308b\u70b9\u306e\u78ba\u8a8d\u304c\u53d6\u308c\u307e\u3059\u3002<\/span><\/span><\/strong><\/p>\n\n\n\n<p>\u3067\u306f\u3001<strong><span style=\"color:#0000ff\" class=\"swl-inline-color\"><span class=\"swl-marker mark_blue\">\u5b9f\u969bIPSec\u306e\u8a2d\u5b9a\u306f\u3046\u307e\u304f\u3044\u3063\u3066\u3044\u308b\u306e\u304b\u3068\u3044\u3046\u3068\u300cshow crypto isakmp sa detail\u300d\u3067Status\u304cActive\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u554f\u984c\u306a\u3044\u3053\u3068\u304c\u78ba\u8a8d<\/span><\/span><\/strong>\u53d6\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u300cshow crypto ipsec sa\u300d\u3067\u306f\u3082\u3046\u5c11\u3057\u7d30\u304b\u3044\u60c5\u5831\u3092\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3067\u306f\u3001<strong><span style=\"color:#ff8c00\" class=\"swl-inline-color\"><span class=\"swl-marker mark_orange\">\u5b9f\u969b\u30d1\u30b1\u30c3\u30c8\u306fEncapsulation\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\u3068\u601d\u3044\u3001\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/span><\/span><\/strong><\/p>\n\n\n\n<p>\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u305f\u30d1\u30b1\u30c3\u30c8\u306fICMP\uff08Ping\uff09\u3092Router2\u304b\u3089Router1\u306b\uff11\uff10\uff10\uff10\u767a\u6253\u3063\u305f\u306e\u3092\u53d6\u5f97\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<center><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" version=\"1.1\" width=\"1245px\" viewBox=\"-0.5 -0.5 1245 252\" content=\"&lt;mxfile host=&quot;Electron&quot; modified=&quot;2023-12-21T12:57:23.208Z&quot; agent=&quot;Mozilla\/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit\/537.36 (KHTML, like Gecko) draw.io\/21.6.5 Chrome\/114.0.5735.243 Electron\/25.3.1 Safari\/537.36&quot; 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