{"id":249,"date":"2025-05-11T13:51:00","date_gmt":"2025-05-11T04:51:00","guid":{"rendered":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=249"},"modified":"2025-10-15T15:20:20","modified_gmt":"2025-10-15T06:20:20","slug":"nat%ef%bc%88%e8%a8%ad%e5%ae%9a%ef%bc%89","status":"publish","type":"post","link":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=249","title":{"rendered":"NAT\uff08\u8a2d\u5b9a\uff09"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u306e\u57fa\u672c\u3068\u8a2d\u5b9a\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u306f\u3001\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u4f7f\u308f\u308c\u3066\u3044\u308b\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IP\u30a2\u30c9\u30ec\u30b9\u3092\u3001\u56fa\u5b9a\u7684\u306b\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u3078\u5909\u63db\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u305d\u306e\u8a2d\u5b9a\u624b\u9806\u3068\u52d5\u4f5c\u306e\u6d41\u308c\u3092\u6574\u7406\u3057\u3066\u5b66\u3093\u3067\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30e1\u30fc\u30b8\u3068\u3057\u3066\u306f\u3001\u793e\u5185\u306e\u4e00\u4eba\u3072\u3068\u308a\u306e\u793e\u54e1\u306b\u300c\u5916\u3067\u4f7f\u3046\u5c02\u7528\u306e\u540d\u523a\u300d\u3092\u3042\u3089\u304b\u3058\u3081\u5272\u308a\u5f53\u3066\u3066\u304a\u304f\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002\u540d\u523a\uff08\u30b0\u30ed\u30fc\u30d0\u30ebIP\uff09\u304c\u6c7a\u307e\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u5916\u90e8\u306e\u4eba\u3082\u305d\u306e\u4eba\u306b\u5fc5\u305a\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3001\u3068\u3044\u3046\u5b89\u5fc3\u611f\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8a2d\u5b9a\u624b\u9806\u306e\u6d41\u308c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u3092\u8a2d\u5b9a\u3059\u308b\u969b\u306e\u624b\u9806\u306f\u5927\u304d\u304f2\u3064\u306b\u5206\u304b\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u306f\u300c\u5185\u90e8\u3067\u4f7f\u3063\u3066\u3044\u308b\u30a2\u30c9\u30ec\u30b9\u300d\u3068\u300c\u5916\u90e8\u306b\u516c\u958b\u3059\u308b\u30a2\u30c9\u30ec\u30b9\u300d\u30921\u5bfe1\u3067\u7d50\u3073\u3064\u3051\u307e\u3059\u3002\u6b21\u306b\u3001\u305d\u306e\u5909\u63db\u3092\u9069\u7528\u3059\u308b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u300c\u5185\u90e8\u300d\u304b\u300c\u5916\u90e8\u300d\u304b\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5185\u90e8\u30a2\u30c9\u30ec\u30b9\u3068\u5916\u90e8\u30a2\u30c9\u30ec\u30b9\u306e\u5bfe\u5fdc\u4ed8\u3051<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5185\u90e8\u306e\u30a2\u30c9\u30ec\u30b9\u3068\u5916\u90e8\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u7d50\u3073\u3064\u3051\u308b\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat inside source static \u5185\u90e8\u30ed\u30fc\u30ab\u30ebIP \u5916\u90e8\u30b0\u30ed\u30fc\u30d0\u30ebIP<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001PC\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c192.168.0.1\u3067\u3001\u305d\u308c\u3092\u5916\u90e8\u304b\u3089100.1.1.1\u3068\u3057\u3066\u898b\u305b\u305f\u3044\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat inside source static 192.168.0.1 100.1.1.1<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a2d\u5b9a\u3092\u3059\u308b\u3053\u3068\u3067\u3001192.168.0.1\u306ePC\u304c\u5916\u306b\u901a\u4fe1\u3059\u308b\u3068\u304d\u306f\u3001\u9001\u4fe1\u5143\u304c100.1.1.1\u306b\u66f8\u304d\u63db\u3048\u3089\u308c\u3066\u51fa\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\u3068\u3057\u3066\u306f\u3001\u300cinside source static\u300d\u3068\u3044\u3046\u66f8\u304d\u65b9\u3092\u3057\u3063\u304b\u308a\u899a\u3048\u308b\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5185\u90e8\u3068\u5916\u90e8\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u6307\u5b9a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3069\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u5185\u90e8\u7528\u304b\u3001\u5916\u90e8\u7528\u304b\u3092\u6307\u5b9a\u3059\u308b\u306e\u3082\u91cd\u8981\u3067\u3059\u3002\u8a2d\u5b9a\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config-if)# ip nat inside\n(config-if)# ip nat outside<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u793e\u5185LAN\u306b\u3064\u306a\u304c\u308b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092inside\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5074\u306b\u51fa\u3066\u3044\u304f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092outside\u3068\u3057\u3066\u8a2d\u5b9a\u3059\u308b\u306e\u304c\u57fa\u672c\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">show\u30b3\u30de\u30f3\u30c9\u3067\u78ba\u8a8d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a2d\u5b9a\u304c\u3067\u304d\u308b\u3068\u3001<code>show ip nat translation<\/code>\u3067\u5909\u63db\u72b6\u6cc1\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u306e\u5834\u5408\u306f\u3001\u901a\u4fe1\u304c\u306a\u304f\u3066\u3082\u30c6\u30fc\u30d6\u30eb\u306b\u5909\u63db\u60c5\u5831\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3068\u3057\u3066\u306f\u6b21\u306e\u3088\u3046\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Inside global    Inside local    Outside local    Outside global\n100.1.1.1        192.168.0.1    ---              ---<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067\u300cInside local\u300d\u304c\u5185\u90e8\u306e\u5b9f\u30a2\u30c9\u30ec\u30b9\u3001\u300cInside global\u300d\u304c\u5916\u90e8\u306b\u516c\u958b\u3055\u308c\u308b\u30a2\u30c9\u30ec\u30b9\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u542b\u3081\u305f\u30b9\u30bf\u30c6\u30a3\u30c3\u30af\u5909\u63db<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u3067\u306f\u3001IP\u30a2\u30c9\u30ec\u30b9\u3060\u3051\u3067\u306a\u304f\u30dd\u30fc\u30c8\u756a\u53f7\u307e\u3067\u6307\u5b9a\u3057\u3066\u5909\u63db\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u30b5\u30fc\u30d0\u30fc\u306e\u516c\u958b\u306a\u3069\u306b\u4f7f\u308f\u308c\u308b\u5927\u5207\u306a\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001\u5185\u90e8PC\u306eSSH\u30b5\u30fc\u30d3\u30b9\uff08192.168.0.1:22\uff09\u3092\u5916\u90e8\u306b\u516c\u958b\u3057\u305f\u3044\u5834\u5408\u3001\u6b21\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat inside source static tcp 192.168.0.1 22 100.1.1.1 220 extendable<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a2d\u5b9a\u3092\u3059\u308b\u3068\u3001\u5916\u90e8\u304b\u3089SSH\u63a5\u7d9a\u3057\u305f\u3044\u3068\u304d\u306b\u306f\u30dd\u30fc\u30c8\u756a\u53f7220\u3092\u5b9b\u5148\u306b\u6307\u5b9a\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u5185\u90e8\u306e22\u756a\u30dd\u30fc\u30c8\u3068\u5916\u90e8\u306e220\u756a\u30dd\u30fc\u30c8\u304c\u7d50\u3073\u3064\u3051\u3089\u308c\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NAT\u30c6\u30fc\u30d6\u30eb\u3092\u898b\u308b\u3068\u3001\u9759\u7684\u306b\u767b\u9332\u3055\u308c\u305f\u884c\u3068\u3001\u5b9f\u969b\u306b\u901a\u4fe1\u304c\u59cb\u307e\u3063\u3066\u52d5\u7684\u306b\u4f5c\u3089\u308c\u308b\u884c\u306e\u4e21\u65b9\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Pro  Inside global   Inside local     Outside local   Outside global\ntcp  100.1.1.1:220   192.168.0.1:22  ---              ---\ntcp  100.1.1.1:220   192.168.0.1:22  100.1.1.2:51180  100.1.1.2:51180<\/code><\/pre>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a<br>\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u306f\u3001\u300c1\u5bfe1\u306e\u56fa\u5b9a\u5909\u63db\u300d\u3067\u3042\u308b\u3053\u3068\u3092\u5fc5\u305a\u899a\u3048\u307e\u3057\u3087\u3046\u3002\u307e\u305f\u3001\u30a2\u30c9\u30ec\u30b9\u3060\u3051\u306e\u5909\u63db\u3068\u3001\u30a2\u30c9\u30ec\u30b9\uff0b\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u5909\u63db\u3059\u308b\u8a2d\u5b9a\u304c\u3042\u308b\u70b9\u3082\u8a66\u9a13\u3067\u3088\u304f\u554f\u308f\u308c\u307e\u3059\u3002\u7279\u306b\u300cip nat inside source static\u300d\u306e\u66f8\u5f0f\u3068\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306binside\/outside\u3092\u8a2d\u5b9a\u3059\u308b\u624b\u9806\u306f\u3001\u5b9f\u6a5f\u3067\u3082\u8a66\u9a13\u554f\u984c\u3067\u3082\u57fa\u672c\u4e2d\u306e\u57fa\u672c\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u306e\u57fa\u672c\u3068\u8a2d\u5b9a\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u306f\u3001\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u306e\u3088\u3046\u306b\u300c1\u5bfe1\u3067\u56fa\u5b9a\u300d\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u3042\u3089\u304b\u3058\u3081\u7528\u610f\u3057\u3066\u304a\u3044\u305f\u30a2\u30c9\u30ec\u30b9\u30d7\u30fc\u30eb\u306e\u4e2d\u304b\u3089\u7a7a\u3044\u3066\u3044\u308b\u30b0\u30ed\u30fc\u30d0\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u52d5\u7684\u306b\u5272\u308a\u5f53\u3066\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u30a4\u30e1\u30fc\u30b8\u3068\u3057\u3066\u306f\u3001\u4f1a\u793e\u306b\u51fa\u793e\u3057\u305f\u793e\u54e1\u304c\u65e5\u66ff\u308f\u308a\u3067\u7a7a\u3044\u3066\u3044\u308b\u300c\u5171\u7528\u30c7\u30b9\u30af\u300d\u306b\u5ea7\u308b\u3088\u3046\u306a\u611f\u3058\u3067\u3059\u3002\u8ab0\u304c\u3069\u306e\u30c7\u30b9\u30af\u3092\u4f7f\u3046\u304b\u306f\u3001\u305d\u306e\u6642\u3005\u3067\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u4ed5\u7d44\u307f\u306b\u3088\u308a\u3001\u9650\u3089\u308c\u305f\u6570\u306e\u30b0\u30ed\u30fc\u30d0\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u52b9\u7387\u7684\u306b\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u4e00\u5ea6\u306b\u540c\u6642\u63a5\u7d9a\u3067\u304d\u308b\u6570\u306f\u30a2\u30c9\u30ec\u30b9\u30d7\u30fc\u30eb\u306e\u6570\u306b\u5236\u9650\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8a2d\u5b9a\u624b\u9806\u306e\u6d41\u308c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u3092\u69cb\u7bc9\u3059\u308b\u969b\u306e\u6d41\u308c\u306f4\u30b9\u30c6\u30c3\u30d7\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5185\u90e8\u30b0\u30ed\u30fc\u30d0\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30d7\u30fc\u30eb\u3092\u4f5c\u6210\u3059\u308b<\/li>\n\n\n\n<li>\u5909\u63db\u5bfe\u8c61\u3068\u306a\u308b\u5185\u90e8\u30ed\u30fc\u30ab\u30eb\u30a2\u30c9\u30ec\u30b9\u3092ACL\u3067\u5b9a\u7fa9\u3059\u308b<\/li>\n\n\n\n<li>ACL\u3068\u30a2\u30c9\u30ec\u30b9\u30d7\u30fc\u30eb\u3092\u95a2\u9023\u4ed8\u3051\u308b<\/li>\n\n\n\n<li>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306binside \/ outside\u3092\u6307\u5b9a\u3059\u308b<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a2\u30c9\u30ec\u30b9\u30d7\u30fc\u30eb\u306e\u5b9a\u7fa9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u306f\u3001\u5916\u90e8\u306b\u516c\u958b\u3059\u308b\u305f\u3081\u306e\u30b0\u30ed\u30fc\u30d0\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u307e\u3068\u3081\u305f\u300c\u30a2\u30c9\u30ec\u30b9\u30d7\u30fc\u30eb\u300d\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat pool \u30d7\u30fc\u30eb\u540d \u958b\u59cbIP \u7d42\u4e86IP netmask \u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001100.1.1.10\uff5e100.1.1.20\u306e\u7bc4\u56f2\u3092\u30d7\u30fc\u30eb\u306b\u3059\u308b\u306a\u3089\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat pool POOL1 100.1.1.10 100.1.1.20 netmask 255.255.255.0<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067\u4f5c\u3063\u305fPOOL1\u306e\u4e2d\u304b\u3089\u3001\u7a7a\u3044\u3066\u3044\u308bIP\u304c\u5185\u90e8\u7aef\u672b\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ACL\u3067\u5bfe\u8c61\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306b\u3001\u3069\u306e\u5185\u90e8\u30a2\u30c9\u30ec\u30b9\u3092NAT\u5909\u63db\u3059\u308b\u306e\u304b\u3092ACL\u3067\u6307\u5b9a\u3057\u307e\u3059\u3002\u6a19\u6e96ACL\u3092\u4f7f\u3046\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# access-list 1 permit 192.168.0.0 0.0.0.255<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a2d\u5b9a\u3067\u306f\u3001192.168.0.0\/24\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u5c5e\u3059\u308bPC\u304c\u5bfe\u8c61\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ACL\u3068\u30d7\u30fc\u30eb\u306e\u95a2\u9023\u4ed8\u3051<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f5c\u6210\u3057\u305fACL\u3068\u30a2\u30c9\u30ec\u30b9\u30d7\u30fc\u30eb\u3092\u7d50\u3073\u3064\u3051\u308b\u306e\u304c\u6b21\u306e\u30b3\u30de\u30f3\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat inside source list 1 pool POOL1<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u4e00\u6587\u3067\u300c192.168.0.0\/24\u306ePC\u306fPOOL1\u306e\u4e2d\u304b\u3089\u30b0\u30ed\u30fc\u30d0\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u5272\u308a\u5f53\u3066\u308b\u300d\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u78ba\u7acb\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u8a2d\u5b9a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u5f8c\u306b\u3001\u30eb\u30fc\u30bf\u306e\u3069\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u5185\u90e8\uff08inside\uff09\u3067\u3001\u3069\u308c\u304c\u5916\u90e8\uff08outside\uff09\u306a\u306e\u304b\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config-if)# ip nat inside\n(config-if)# ip nat outside<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">LAN\u5074\u3092inside\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5074\u3092outside\u306b\u3059\u308b\u306e\u304c\u57fa\u672c\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u52d5\u4f5c\u306e\u9055\u3044\uff08\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u3068\u306e\u6bd4\u8f03\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u3067\u306f\u3001\u8a2d\u5b9a\u3057\u305f\u6642\u70b9\u3067NAT\u30c6\u30fc\u30d6\u30eb\u306b\u5909\u63db\u60c5\u5831\u304c\u8f09\u308b\u305f\u3081\u3001\u5916\u90e8\u304b\u3089\u3067\u3082\u5185\u90e8\u304b\u3089\u3067\u3082\u901a\u4fe1\u3092\u958b\u59cb\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u65b9\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u3067\u306f\u5185\u90e8\u304b\u3089\u901a\u4fe1\u3092\u59cb\u3081\u305f\u3068\u304d\u306b\u521d\u3081\u3066\u5909\u63db\u30c6\u30fc\u30d6\u30eb\u304c\u4f5c\u3089\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u5916\u90e8\u304b\u3089\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u3092\u958b\u59cb\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a66\u9a13\u306e\u89b3\u70b9\u3067\u306f\u3001\u3053\u306e\u9055\u3044\u304c\u3088\u304f\u554f\u308f\u308c\u307e\u3059\u3002\u300c\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u306f\u5185\u90e8\u304b\u3089\u306e\u901a\u4fe1\u3067\u30c6\u30fc\u30d6\u30eb\u304c\u751f\u6210\u3055\u308c\u308b\u300d\u3068\u3044\u3046\u70b9\u306f\u5fc5\u305a\u62bc\u3055\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PAT\u306e\u57fa\u672c\u3068\u8a2d\u5b9a\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">PAT\uff08Port Address Translation\uff09<\/span><\/strong>\u306f\u30011\u3064\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u3092\u8907\u6570\u306e\u7aef\u672b\u3067\u5171\u6709\u3067\u304d\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u3084\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u3067\u306f\u300c\u30a2\u30c9\u30ec\u30b9\u306e\u6570\uff1d\u540c\u6642\u5229\u7528\u3067\u304d\u308b\u7aef\u672b\u6570\u300d\u3068\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u304c\u3001PAT\u3067\u306f\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u5229\u7528\u3057\u3066\u533a\u5225\u3059\u308b\u305f\u3081\u3001\u305f\u304f\u3055\u3093\u306e\u5185\u90e8\u7aef\u672b\u304c\u540c\u3058\u30b0\u30ed\u30fc\u30d0\u30ebIP\u3092\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30e1\u30fc\u30b8\u3068\u3057\u3066\u306f\u3001\u5927\u304d\u306a\u30aa\u30d5\u30a3\u30b9\u30d3\u30eb\u306b\u3042\u308b\u300c\u4ee3\u8868\u96fb\u8a71\u756a\u53f7\u300d\u3092\u601d\u3044\u6d6e\u304b\u3079\u308b\u3068\u308f\u304b\u308a\u3084\u3059\u3044\u3067\u3059\u3002\u5916\u90e8\u304b\u3089\u306f\u540c\u3058\u96fb\u8a71\u756a\u53f7\uff08\u30b0\u30ed\u30fc\u30d0\u30ebIP\uff09\u306b\u304b\u304b\u3063\u3066\u304d\u307e\u3059\u304c\u3001\u5b9f\u969b\u306b\u306f\u5185\u7dda\u756a\u53f7\uff08\u30dd\u30fc\u30c8\u756a\u53f7\uff09\u3092\u4f7f\u3063\u3066\u793e\u54e1\uff08\u5185\u90e8\u7aef\u672b\uff09\u3054\u3068\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PAT\u306e\u8a2d\u5b9a\u306b\u306f\u3001\u5927\u304d\u304f\u5206\u3051\u30662\u3064\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u30021\u3064\u76ee\u306f\u300c\u5916\u90e8\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3046\u65b9\u6cd5\u300d\u30012\u3064\u76ee\u306f\u300c\u30d7\u30fc\u30eb\u306b\u5b9a\u7fa9\u3057\u305f\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3046\u65b9\u6cd5\u300d\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PAT\u306e\u8a2d\u5b9a\uff08\u5916\u90e8\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u7528\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u3082\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u306f\u3001\u5916\u90e8\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u3044\u308b\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3046PAT\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5185\u90e8\u30a2\u30c9\u30ec\u30b9\u3092ACL\u3067\u6307\u5b9a\u3059\u308b<\/li>\n\n\n\n<li>ACL\u3068\u5916\u90e8\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u95a2\u9023\u4ed8\u3051\u308b\uff08overload\u3092\u5fc5\u305a\u3064\u3051\u308b\uff09<\/li>\n\n\n\n<li>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092inside \/ outside\u306b\u6307\u5b9a\u3059\u308b<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">ACL\u306e\u4f5c\u6210<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# access-list 1 permit 192.168.0.0 0.0.0.255<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u4f8b\u3067\u306f\u3001192.168.0.0\/24\u306e\u5185\u90e8\u7aef\u672b\u3092PAT\u306e\u5bfe\u8c61\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ACL\u3068\u5916\u90e8\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u95a2\u9023\u4ed8\u3051<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat inside source list 1 interface GigabitEthernet0\/0 overload<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067\u306e\u30dd\u30a4\u30f3\u30c8\u306f <strong>overload<\/strong> \u3068\u3044\u3046\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3059\u3002\u3053\u308c\u304c\u3064\u3044\u3066\u3044\u308b\u3053\u3068\u3067\u30011\u3064\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u3092\u30dd\u30fc\u30c8\u756a\u53f7\u3067\u4f7f\u3044\u5206\u3051\u3066\u8907\u6570\u7aef\u672b\u304c\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u6307\u5b9a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config-if)# ip nat inside\n(config-if)# ip nat outside<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">LAN\u5074\u3092inside\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5074\u3092outside\u306b\u3059\u308b\u306e\u304c\u57fa\u672c\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u52d5\u4f5c\u306e\u30a4\u30e1\u30fc\u30b8<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001\u5185\u90e8\u306b3\u53f0\u306ePC\uff08192.168.0.1\u3001192.168.0.2\u3001192.168.0.3\uff09\u304c\u3042\u308b\u5834\u5408\u3001\u5916\u306b\u51fa\u308b\u3068\u304d\u306f\u3069\u308c\u3082\u300c100.1.1.1\u300d\u3068\u3044\u3046\u30a2\u30c9\u30ec\u30b9\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u9001\u4fe1\u5143\u30dd\u30fc\u30c8\u756a\u53f7\u306f\u305d\u308c\u305e\u308c\u7570\u306a\u308b\u5024\u306b\u5909\u3048\u3089\u308c\u308b\u305f\u3081\u3001\u623b\u3063\u3066\u304d\u305f\u5fdc\u7b54\u30d1\u30b1\u30c3\u30c8\u3082\u6b63\u3057\u304f\u5bfe\u5fdc\u3059\u308bPC\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PAT\u306e\u8a2d\u5b9a\uff08\u30d7\u30fc\u30eb\u306b\u5b9a\u7fa9\u3057\u305f\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u7528\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3082\u30461\u3064\u306e\u65b9\u6cd5\u306f\u3001\u30d7\u30fc\u30eb\u306b\u5b9a\u7fa9\u3057\u305f\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3046\u3084\u308a\u65b9\u3067\u3059\u3002\u8a2d\u5b9a\u624b\u9806\u306f\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u3068\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001\u30dd\u30a4\u30f3\u30c8\u306f <strong>\u30d7\u30fc\u30eb\u306e\u30a2\u30c9\u30ec\u30b9\u30921\u3064\u3060\u3051\u306b\u3059\u308b<\/strong> \u3053\u3068\u3068\u3001\u30b3\u30de\u30f3\u30c9\u306e\u6700\u5f8c\u306b <strong>overload<\/strong> \u3092\u3064\u3051\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30b0\u30ed\u30fc\u30d0\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30d7\u30fc\u30eb\u3092\u4f5c\u6210\uff081\u3064\u306eIP\u3060\u3051\uff09<\/li>\n\n\n\n<li>ACL\u3067\u5185\u90e8\u30a2\u30c9\u30ec\u30b9\u3092\u5b9a\u7fa9<\/li>\n\n\n\n<li>ACL\u3068\u30d7\u30fc\u30eb\u3092\u95a2\u9023\u4ed8\u3051\uff08overload\u3092\u5fd8\u308c\u306a\u3044\uff09<\/li>\n\n\n\n<li>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092inside \/ outside\u306b\u6307\u5b9a<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u30d7\u30fc\u30eb\u306e\u4f5c\u6210\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat pool POOL1 100.1.1.100 100.1.1.100 netmask 255.255.255.0<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">ACL\u306e\u4f5c\u6210\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# access-list 1 permit 192.168.0.0 0.0.0.255<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">ACL\u3068\u30d7\u30fc\u30eb\u306e\u95a2\u9023\u4ed8\u3051<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat inside source list 1 pool POOL1 overload<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u6307\u5b9a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config-if)# ip nat inside\n(config-if)# ip nat outside<\/code><\/pre>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a<br><br>PAT\u306fNAT\u306e\u4e2d\u3067\u6700\u3082\u73fe\u5b9f\u7684\u306b\u3088\u304f\u4f7f\u308f\u308c\u308b\u65b9\u5f0f\u3067\u3059\u3002\u8a66\u9a13\u3067\u3082\u300coverload\u300d\u3068\u3044\u3046\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u51fa\u3066\u304d\u305f\u3089PAT\u3060\u3068\u5224\u65ad\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<br>\u7279\u306b\u6b21\u306e\u70b9\u306f\u5fc5\u305a\u899a\u3048\u3066\u304a\u304f\u3079\u304d\u3067\u3059\u3002<br>\u30fbPAT\u3067\u306f\u300c1\u3064\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u3092\u8907\u6570\u306e\u7aef\u672b\u3067\u5171\u6709\u3067\u304d\u308b\u300d<br>\u30fb\u8a2d\u5b9a\u306b\u306f\u5fc5\u305a <strong>overload<\/strong> \u3092\u3064\u3051\u308b<br>\u30fb\u6700\u3082\u4e00\u822c\u7684\u306a\u306e\u306f\u300c\u5916\u90e8\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30a2\u30c9\u30ec\u30b9\u300d\u3092\u4f7f\u3046\u8a2d\u5b9a<br><br>\u3053\u306e\u3042\u305f\u308a\u3092\u3057\u3063\u304b\u308a\u62bc\u3055\u3048\u3066\u304a\u3051\u3070\u3001NAT\u95a2\u9023\u306e\u554f\u984c\u3067\u5f97\u70b9\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">NAT\u30c6\u30fc\u30d6\u30eb\u3068\u78ba\u8a8d\u30b3\u30de\u30f3\u30c9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">NAT\u3092\u8a2d\u5b9a\u3057\u305f\u3089\u3001\u6b63\u3057\u304f\u5909\u63db\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001<strong>\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u30fb\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u30fbPAT<\/strong> \u305d\u308c\u305e\u308c\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u9055\u3044\u3068\u3001\u78ba\u8a8d\u30b3\u30de\u30f3\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u6574\u7406\u3057\u3066\u5b66\u3093\u3067\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u969b\u306eCCNA\u8a66\u9a13\u3067\u3082\u300cshow\u30b3\u30de\u30f3\u30c9\u306e\u51fa\u529b\u304b\u3089\u3001\u3069\u306eNAT\u65b9\u5f0f\u304c\u4f7f\u308f\u308c\u3066\u3044\u308b\u304b\u3092\u5224\u5225\u3059\u308b\u554f\u984c\u300d\u304c\u51fa\u984c\u3055\u308c\u3084\u3059\u3044\u305f\u3081\u3001\u51fa\u529b\u4f8b\u3068\u898b\u65b9\u3092\u7406\u89e3\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u5f97\u70b9\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u306e\u30c6\u30fc\u30d6\u30eb\u78ba\u8a8d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u306f\u30011\u5bfe1\u3067\u56fa\u5b9a\u7684\u306b\u5909\u63db\u3059\u308b\u65b9\u5f0f\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u901a\u4fe1\u304c\u767a\u751f\u3057\u3066\u3044\u306a\u304f\u3066\u3082\u3001\u8a2d\u5b9a\u3057\u305f\u6642\u70b9\u3067NAT\u30c6\u30fc\u30d6\u30eb\u306b\u5909\u63db\u60c5\u5831\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Cisco(config)# ip nat inside source static 192.168.0.1 100.1.1.1\nCisco(config)# interface GigabitEthernet0\/1\nCisco(config-if)# ip nat inside\nCisco(config)# interface GigabitEthernet0\/0\nCisco(config-if)# ip nat outside<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a2d\u5b9a\u5f8c\u306b <code>show ip nat translations<\/code> \u3092\u78ba\u8a8d\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Inside global     Inside local     Outside local     Outside global\n100.1.1.1         192.168.0.1     ---               ---<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cInside global\u300d\u304c\u5916\u90e8\u306b\u898b\u305b\u308b\u30a2\u30c9\u30ec\u30b9\u3001\u300cInside local\u300d\u304c\u5185\u90e8\u3067\u4f7f\u3063\u3066\u3044\u308b\u5b9f\u30a2\u30c9\u30ec\u30b9\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u306f\u300c\u901a\u4fe1\u3057\u3066\u3044\u306a\u304f\u3066\u3082\u30c6\u30fc\u30d6\u30eb\u304c\u8868\u793a\u3055\u308c\u308b\u300d\u3068\u3044\u3046\u70b9\u3092\u5fc5\u305a\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u306e\u30c6\u30fc\u30d6\u30eb\u78ba\u8a8d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u3067\u306f\u3001\u30a2\u30c9\u30ec\u30b9\u30d7\u30fc\u30eb\u304b\u3089\u7a7a\u304d\u30a2\u30c9\u30ec\u30b9\u3092\u52d5\u7684\u306b\u5272\u308a\u5f53\u3066\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Cisco(config)# ip nat pool TEST 100.1.1.1 100.1.1.6 netmask 255.255.255.248\nCisco(config)# access-list 1 permit 192.168.0.0 0.0.0.255\nCisco(config)# ip nat inside source list 1 pool TEST<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u72b6\u614b\u3067 <code>show ip nat translations<\/code> \u3092\u5b9f\u884c\u3057\u3066\u3082\u3001\u307e\u3060\u4f55\u3082\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u3002\u7406\u7531\u306f\u300c\u5185\u90e8\u304b\u3089\u901a\u4fe1\u3092\u958b\u59cb\u3057\u306a\u3044\u3068\u30c6\u30fc\u30d6\u30eb\u304c\u4f5c\u3089\u308c\u306a\u3044\u300d\u304b\u3089\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001192.168.0.1 \u306ePC\u304b\u3089 200.1.1.2 \u306eWeb\u30b5\u30fc\u30d0\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306b\u30c6\u30fc\u30d6\u30eb\u304c\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Pro  Inside global      Inside local       Outside local      Outside global\ntcp  100.1.1.2:12345    192.168.0.1:12345  200.1.1.2:80       200.1.1.2:80<\/code><\/pre>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a\u300c\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u306f\u8a2d\u5b9a\u3060\u3051\u3067\u8868\u793a\u3055\u308c\u308b\u300d\u300c\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u306f\u5185\u90e8\u304b\u3089\u901a\u4fe1\u3092\u59cb\u3081\u3066\u521d\u3081\u3066\u8868\u793a\u3055\u308c\u308b\u300d\u3053\u306e\u9055\u3044\u306f\u5fc5\u305a\u51fa\u984c\u3055\u308c\u308b\u90e8\u5206\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PAT\u306e\u30c6\u30fc\u30d6\u30eb\u78ba\u8a8d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PAT\u3067\u306f\u30011\u3064\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u3092\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u4f7f\u3063\u3066\u8907\u6570\u306e\u5185\u90e8\u7aef\u672b\u3067\u5171\u6709\u3057\u307e\u3059\u3002\u8a2d\u5b9a\u4f8b\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Cisco(config)# access-list 1 permit 192.168.0.0 0.0.0.255\nCisco(config)# ip nat inside source list 1 interface GigabitEthernet0\/0 overload<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u5834\u5408\u3082\u3001\u901a\u4fe1\u304c\u767a\u751f\u3059\u308b\u307e\u3067\u306f\u30c6\u30fc\u30d6\u30eb\u306b\u4f55\u3082\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u3002<br>\u5185\u90e8\u7aef\u672b\uff08\u4f8b\uff1a192.168.0.1\uff09\u304c200.1.1.2\u3078\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Pro  Inside global       Inside local       Outside local      Outside global\ntcp  100.1.1.1:40001     192.168.0.1:12345  200.1.1.2:80       200.1.1.2:80<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u3088\u3046\u306b\u3001\u540c\u3058\u30b0\u30ed\u30fc\u30d0\u30eb\u30a2\u30c9\u30ec\u30b9\u300c100.1.1.1\u300d\u304c\u4f7f\u308f\u308c\u307e\u3059\u304c\u3001\u30dd\u30fc\u30c8\u756a\u53f7\u3067\u8907\u6570\u306e\u901a\u4fe1\u3092\u533a\u5225\u3057\u3066\u3044\u308b\u306e\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1aPAT\u3067\u306f\u300coverload\u300d\u304c\u5fc5\u305a\u8a2d\u5b9a\u306b\u767b\u5834\u3059\u308b\u3053\u3068\u3001\u30c6\u30fc\u30d6\u30eb\u306b\u306f\u30dd\u30fc\u30c8\u756a\u53f7\u4ed8\u304d\u3067\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u3092\u62bc\u3055\u3048\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">NAT\u30a2\u30c9\u30ec\u30b9\u5909\u63db\u306e\u7d71\u8a08\u60c5\u5831<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c6\u30fc\u30d6\u30eb\u306e\u8a73\u7d30\u3060\u3051\u3067\u306a\u304f\u3001\u7d71\u8a08\u60c5\u5831\u3092\u78ba\u8a8d\u3067\u304d\u308b\u306e\u304c <code>show ip nat statistics<\/code> \u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Total active translations: 3 (1 static, 2 dynamic; 2 extended)\nOutside interfaces: FastEthernet0\nInside interfaces: FastEthernet1\nHits: 559  Misses: 130\nExpired translations: 45<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067\u306f\u4ee5\u4e0b\u306e\u70b9\u304c\u8aad\u307f\u53d6\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u73fe\u5728\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u5909\u63db\u30a8\u30f3\u30c8\u30ea\u306f3\u3064<\/li>\n\n\n\n<li>\u305d\u306e\u3046\u3061\u30b9\u30bf\u30c6\u30a3\u30c3\u30af\u304c1\u3064\u3001\u52d5\u7684\u5909\u63db\u304c2\u3064<\/li>\n\n\n\n<li>559\u56de\u5909\u63db\u304c\u6210\u529f\uff08Hits\uff09\u3001130\u56de\u306f\u5909\u63db\u3067\u304d\u306a\u304b\u3063\u305f\uff08Misses\uff09<\/li>\n\n\n\n<li>45\u56de\u306e\u5909\u63db\u30a8\u30f3\u30c8\u30ea\u304c\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3067\u524a\u9664\u3055\u308c\u305f<\/li>\n<\/ul>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a\u300cHits\u300d\u300cMisses\u300d\u300cExpired translations\u300d\u306e\u610f\u5473\u3092\u899a\u3048\u3066\u304a\u304f\u3068\u3001\u51fa\u984c\u6642\u306b\u6df7\u4e71\u305b\u305a\u306b\u6e08\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">NAT\u306e\u30c7\u30d0\u30c3\u30b0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067NAT\u306e\u52d5\u304d\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f <code>debug ip nat<\/code> \u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u884c\u304d\u306e\u30d1\u30b1\u30c3\u30c8\u3067\u306f\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u304c\u300c192.168.0.1 \u2192 100.1.1.1\u300d\u306b\u5909\u63db\u3055\u308c\u3001\u5b9b\u5148\u300c200.1.1.2\u300d\u306b\u9001\u3089\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e30\u308a\u306e\u30d1\u30b1\u30c3\u30c8\u3067\u306f\u3001\u30b5\u30fc\u30d0\uff08200.1.1.2\uff09\u304b\u3089\u623b\u3063\u3066\u304d\u305f\u5b9b\u5148\u300c100.1.1.1\u300d\u304c\u300c192.168.0.1\u300d\u306b\u5909\u63db\u3055\u308c\u3001\u5185\u90e8PC\u306b\u5c4a\u304f\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1adebug\u306e\u51fa\u529b\u3067\u300cs=\u300d\u304c\u9001\u4fe1\u5143\u3001\u300cd=\u300d\u304c\u5b9b\u5148\u3001\u300c->\u300d\u304c\u5909\u63db\u5f8c\u3092\u8868\u3059\u3053\u3068\u3092\u7406\u89e3\u3057\u3066\u304a\u304f\u3068\u3001\u5b9f\u6a5f\u8a66\u9a13\u3084\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c8\u554f\u984c\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">NAT\u30c6\u30fc\u30d6\u30eb\u306e\u30a8\u30f3\u30c8\u30ea\u7ba1\u7406<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">NAT\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u30eb\u30fc\u30bf\u5185\u90e8\u306b\u306f\u300c\u3069\u306e\u5185\u90e8\u30a2\u30c9\u30ec\u30b9\u304c\u3069\u306e\u5916\u90e8\u30a2\u30c9\u30ec\u30b9\u306b\u5909\u63db\u3055\u308c\u3066\u3044\u308b\u304b\u300d\u3092\u8a18\u9332\u3057\u305fNAT\u30c6\u30fc\u30d6\u30eb\u304c\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30c6\u30fc\u30d6\u30eb\u306f\u901a\u4fe1\u3092\u6b63\u3057\u304f\u623b\u3059\u305f\u3081\u306e\u5730\u56f3\u306e\u3088\u3046\u306a\u5f79\u5272\u3092\u6301\u3061\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u305d\u306e\u30a8\u30f3\u30c8\u30ea\u3092\u624b\u52d5\u3067\u30af\u30ea\u30a2\u3059\u308b\u65b9\u6cd5\u3068\u3001\u81ea\u52d5\u7684\u306b\u6d88\u3048\u308b\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306e\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5909\u63db\u30a8\u30f3\u30c8\u30ea\u306e\u30af\u30ea\u30a2\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u3067\u306f\u3001\u8a2d\u5b9a\u3068\u540c\u6642\u306bNAT\u30c6\u30fc\u30d6\u30eb\u3078\u5909\u63db\u60c5\u5831\u304c\u9759\u7684\u306b\u767b\u9332\u3055\u308c\u3001\u524a\u9664\u3055\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5bfe\u3057\u3066\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u3084PAT\u3067\u306f\u3001\u901a\u4fe1\u304c\u9014\u7d76\u3048\u308b\u3068\u4e00\u5b9a\u6642\u9593\u3067\u30a8\u30f3\u30c8\u30ea\u304c\u81ea\u52d5\u7684\u306b\u6d88\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3057\u304b\u3057\u3001\u7ba1\u7406\u8005\u304c\u4efb\u610f\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u30a8\u30f3\u30c8\u30ea\u3092\u6d88\u3057\u305f\u3044\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u3068\u304d\u306b\u4f7f\u3046\u306e\u304c <code>clear ip nat translations<\/code> \u30b3\u30de\u30f3\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3059\u3079\u3066\u306e\u52d5\u7684\u30a8\u30f3\u30c8\u30ea\u3092\u30af\u30ea\u30a2<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># clear ip nat translations *<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u52d5\u7684\u306b\u751f\u6210\u3055\u308c\u305f\u5168\u3066\u306eNAT\u5909\u63db\u30a8\u30f3\u30c8\u30ea\u3092\u524a\u9664\u3057\u307e\u3059\u3002\u8a66\u9a13\u3084\u691c\u8a3c\u74b0\u5883\u3067\u300c\u4e00\u5ea6\u30ea\u30bb\u30c3\u30c8\u3057\u305f\u3044\u300d\u3068\u304d\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7279\u5b9a\u306e\u5185\u90e8\u5909\u63db\u30a8\u30f3\u30c8\u30ea\u3092\u30af\u30ea\u30a2<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># clear ip nat translations inside global-ip local-ip<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u5b9a\u306e\u5185\u90e8\u30b0\u30ed\u30fc\u30d0\u30eb\u30a2\u30c9\u30ec\u30b9\u3068\u5185\u90e8\u30ed\u30fc\u30ab\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5bfe\u5fdc\u95a2\u4fc2\u3060\u3051\u3092\u524a\u9664\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5185\u90e8\u30fb\u5916\u90e8\u306e\u4e21\u65b9\u3092\u6307\u5b9a\u3057\u3066\u30af\u30ea\u30a2<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># clear ip nat translations inside global-ip local-ip outside local-ip global-ip<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5185\u90e8\u3068\u5916\u90e8\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u3055\u3089\u306b\u7d30\u304b\u304f\u5bfe\u8c61\u3092\u6307\u5b9a\u3057\u3066\u524a\u9664\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">NAT\u5909\u63db\u30a8\u30f3\u30c8\u30ea\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u3084PAT\u3067\u306f\u3001\u4e00\u5b9a\u6642\u9593\u901a\u4fe1\u304c\u884c\u308f\u308c\u306a\u3051\u308c\u3070\u5909\u63db\u30a8\u30f3\u30c8\u30ea\u306f\u81ea\u52d5\u7684\u306b\u6d88\u3048\u307e\u3059\u3002\u3053\u306e\u300c\u4e00\u5b9a\u6642\u9593\u300d\u304c\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3067\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u3054\u3068\u306b\u7570\u306a\u308b\u5024\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5909\u66f4\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat translation timeout \u79d2\u6570<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30d5\u30a9\u30eb\u30c8\u306f <strong>86400\u79d2\uff0824\u6642\u9593\uff09<\/strong> \u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PAT\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\uff08TCP\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat translation tcp-timeout \u79d2\u6570 &#91; never ]<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30d5\u30a9\u30eb\u30c8\u306f <strong>86400\u79d2\uff0824\u6642\u9593\uff09<\/strong> \u3067\u3059\u3002<br><code>never<\/code> \u3092\u6307\u5b9a\u3059\u308b\u3068\u6d88\u3048\u306a\u304f\u306a\u308a\u307e\u3059\u304c\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3084\u30eb\u30fc\u30bf\u8ca0\u8377\u306e\u89b3\u70b9\u304b\u3089\u63a8\u5968\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PAT\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\uff08UDP\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat translation udp-timeout \u79d2\u6570 &#91; never ]<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30d5\u30a9\u30eb\u30c8\u306f <strong>300\u79d2<\/strong> \u3067\u3059\u3002UDP\u306f\u63a5\u7d9a\u72b6\u614b\u3092\u6301\u305f\u306a\u3044\u305f\u3081\u3001\u77ed\u3081\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PAT\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\uff08DNS\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat translation dns-timeout \u79d2\u6570 &#91; never ]<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30d5\u30a9\u30eb\u30c8\u306f <strong>60\u79d2<\/strong> \u3067\u3059\u3002\u540d\u524d\u89e3\u6c7a\u306e\u30af\u30a8\u30ea\u306f\u77ac\u6642\u306b\u7d42\u308f\u308b\u305f\u3081\u77ed\u3044\u5024\u304c\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PAT\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\uff08ICMP\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ip nat translation icmp-timeout \u79d2\u6570 &#91; never ]<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30d5\u30a9\u30eb\u30c8\u306f <strong>60\u79d2<\/strong> \u3067\u3059\u3002ping\u306a\u3069\u306e\u758e\u901a\u78ba\u8a8d\u3067\u4f7f\u3046\u305f\u3081\u3001\u77ed\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a<br><br>\u30fb<strong>\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT<\/strong> \u306f\u30a8\u30f3\u30c8\u30ea\u304c\u6d88\u3048\u306a\u3044\uff08\u8a2d\u5b9a\uff1d\u6c38\u7d9a\u7684\u306b\u4fdd\u6301\uff09\u3002<br>\u30fb<strong>\u30c0\u30a4\u30ca\u30df\u30c3\u30afNAT \/ PAT<\/strong> \u306f\u901a\u4fe1\u304c\u6b62\u307e\u308b\u3068\u81ea\u52d5\u7684\u306b\u30af\u30ea\u30a2\u3055\u308c\u308b\u3002<br>\u30fb<code>clear ip nat translations *<\/code> \u3067\u5168\u30a8\u30f3\u30c8\u30ea\u3092\u5f37\u5236\u524a\u9664\u3067\u304d\u308b\u3002<br>\u30fb\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u5024\u306f\u30d7\u30ed\u30c8\u30b3\u30eb\u3054\u3068\u306b\u7570\u306a\u308a\u3001\u7279\u306b <strong>UDP 300\u79d2 \/ DNS 60\u79d2 \/ ICMP 60\u79d2<\/strong> \u306f\u983b\u51fa\u3002<br><br>\u3053\u308c\u3089\u3092\u62bc\u3055\u3048\u3066\u304a\u3051\u3070\u3001NAT\u30c6\u30fc\u30d6\u30eb\u95a2\u9023\u306e\u554f\u984c\u3067\u8ff7\u308f\u305a\u89e3\u7b54\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u53cc\u65b9\u5411NAT\uff08Twice NAT\uff09\u306e\u8003\u3048\u65b9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u53cc\u65b9\u5411NAT\u306f\u3001\u540c\u3058NAT\u30eb\u30fc\u30bf\u304c\u300c\u5185\u5074\u306e\u9001\u4fe1\u5143\u5909\u63db\u300d\u3068\u300c\u5916\u5074\u306e\u9001\u4fe1\u5143\u5909\u63db\u300d\u3092\u540c\u6642\u306b\u3053\u306a\u3059\u4ed5\u7d44\u307f\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u793e\u5185PC\u306f\u76f8\u624b\u3092\u201c\u793e\u5185\u3063\u307d\u3044\u30a2\u30c9\u30ec\u30b9\u201d\u3060\u3068\u4fe1\u3058\u3066\u901a\u4fe1\u3057\u3001\u793e\u5916\u30b5\u30fc\u30d0\u306f\u76f8\u624b\u3092\u201c\u793e\u5916\u3063\u307d\u3044\u30a2\u30c9\u30ec\u30b9\u201d\u3060\u3068\u4fe1\u3058\u3066\u901a\u4fe1\u3057\u307e\u3059\u3002\u304a\u4e92\u3044\u306e\u672c\u5f53\u306eIP\u3092\u77e5\u3089\u306a\u304f\u3066\u3082\u4f1a\u8a71\u3067\u304d\u308b\u305f\u3081\u3001\u76f8\u624b\u306e\u6240\u5728\u3092\u96a0\u3057\u305f\u3044\u5834\u5408\u3084\u30a2\u30c9\u30ec\u30b9\u8a08\u753b\u3092\u5d29\u3057\u305f\u304f\u306a\u3044\u5834\u9762\u3067\u4fbf\u5229\u3067\u3059\u3002\u8eab\u8fd1\u306a\u4f8b\u306b\u7f6e\u304d\u63db\u3048\u308b\u3068\u3001\u30eb\u30fc\u30bf\u304c\u300c\u5185\u7dda\u756a\u53f7\u300d\u3068\u300c\u5916\u7dda\u756a\u53f7\u300d\u3092\u4e21\u65b9\u6301\u3064\u4ea4\u63db\u624b\u306b\u306a\u308a\u3001\u3069\u3061\u3089\u304b\u3089\u304b\u3051\u3066\u3082\u76f8\u624b\u306e\u201c\u90fd\u5408\u306e\u3044\u3044\u756a\u53f7\u201d\u306b\u3059\u308a\u66ff\u3048\u3066\u3064\u306a\u3044\u3067\u304f\u308c\u308b\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2\u672c\u306e\u30b3\u30de\u30f3\u30c9\u3067\u201c\u5185\u5074\u7528\u201d\u3068\u201c\u5916\u5074\u7528\u201d\u3092\u7528\u610f\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u53cc\u65b9\u5411NAT\u306f\u8a2d\u5b9a\u30922\u672c\u30bb\u30c3\u30c8\u3067\u8003\u3048\u308b\u3068\u7406\u89e3\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002\u5185\u5074\u306e\u5b9f\u30a2\u30c9\u30ec\u30b9\u3092\u5916\u5074\u306b\u898b\u305b\u308b\u30a2\u30c9\u30ec\u30b9\u3078\u56fa\u5b9a\u5909\u63db\u3059\u308b\u306e\u304c <code>ip nat inside source static<\/code>\u3001\u5916\u5074\u306e\u5b9f\u30a2\u30c9\u30ec\u30b9\u3092\u5185\u5074\u306b\u898b\u305b\u308b\u30a2\u30c9\u30ec\u30b9\u3078\u56fa\u5b9a\u5909\u63db\u3059\u308b\u306e\u304c <code>ip nat outside source static<\/code> \u3067\u3059\u3002\u3069\u3061\u3089\u3082\u201csource\u201d\u3067\u3059\u304c\u3001\u5bfe\u8c61\u304c\u5185\u5074\u304b\u5916\u5074\u304b\u3067\u5f79\u5272\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u4e0b\u306e\u8868\u306f\u3001\u8a2d\u5b9a\u3067\u767b\u5834\u3059\u308b4\u3064\u306e\u30a2\u30c9\u30ec\u30b9\u306e\u95a2\u4fc2\u3092\u4e00\u671b\u3067\u304d\u308b\u3088\u3046\u306b\u4e26\u3079\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u89b3\u70b9<\/th><th>\u5185\u5074\u30db\u30b9\u30c8\u306e\u5b9f\u4f53<\/th><th>\u5185\u5074\u306b\u898b\u305b\u308b\u201c\u5916\u5074\u201d<\/th><th>\u5916\u5074\u30db\u30b9\u30c8\u306e\u5b9f\u4f53<\/th><th>\u5916\u5074\u306b\u898b\u305b\u308b\u201c\u5185\u5074\u201d<\/th><\/tr><\/thead><tbody><tr><td>\u4f8b\u3067\u4f7f\u3046\u5024<\/td><td>192.168.1.10<\/td><td>192.168.1.20<\/td><td>10.1.1.10<\/td><td>10.1.1.20<\/td><\/tr><tr><td>\u95a2\u4e0e\u30b3\u30de\u30f3\u30c9<\/td><td><code>ip nat inside source static 192.168.1.10 10.1.1.20<\/code><\/td><td>\u306a\u3057\uff08\u5185\u5074\u304b\u3089\u898b\u3048\u308b\u5916\u5074\u5074\u306e\u4eee\u60f3IP\u306f\u5225\u30b3\u30de\u30f3\u30c9\u3067\u7528\u610f\uff09<\/td><td><code>ip nat outside source static 10.1.1.10 192.168.1.20<\/code><\/td><td>\u306a\u3057\uff08\u5916\u5074\u304b\u3089\u898b\u3048\u308b\u5185\u5074\u5074\u306e\u4eee\u60f3IP\u306f\u5225\u30b3\u30de\u30f3\u30c9\u3067\u7528\u610f\uff09<\/td><\/tr><tr><td>\u3060\u308c\u304c\u305d\u306eIP\u306b\u5fdc\u7b54\u3059\u308b\u304b<\/td><td>192.168.1.10 \u306f\u81ea\u6a5f<\/td><td>10.1.1.20 \u306fNAT\u30eb\u30fc\u30bf<\/td><td>10.1.1.10 \u306f\u81ea\u6a5f<\/td><td>192.168.1.20 \u306fNAT\u30eb\u30fc\u30bf<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1aTwice NAT\u306f\u300cinside\u7528static\u300d\u3068\u300coutside\u7528static\u300d\u3092<strong>\u5bfe\u3067<\/strong>\u5165\u308c\u3066\u521d\u3081\u3066\u5b8c\u6210\u3057\u307e\u3059\u3002\u7247\u65b9\u3060\u3051\u3067\u306f\u201c\u4e00\u65b9\u5411NAT\u201d\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u3001\u671f\u5f85\u3059\u308b\u201c\u4e92\u3044\u306b\u30ed\u30fc\u30ab\u30eb\u3060\u3068\u601d\u3044\u8fbc\u3080\u201d\u901a\u4fe1\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b3\u30f3\u30d5\u30a3\u30b0\u4f8b\u3068\u901a\u4fe1\u306e\u6d41\u308c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306e\u8a2d\u5b9a\u3067\u306f\u3001\u5185\u5074\u30bb\u30b0\u30e1\u30f3\u30c8\u3092 192.168.1.0\/24\u3001\u5916\u5074\u30bb\u30b0\u30e1\u30f3\u30c8\u3092 10.1.1.0\/24 \u3068\u3057\u3001\u5185\u5074\u306e 192.168.1.10 \u304c\u5916\u5074\u3092 10.1.1.20 \u3068\u898b\u3066\u901a\u4fe1\u3057\u3001\u5916\u5074\u306e 10.1.1.10 \u304c\u5185\u5074\u3092 192.168.1.20 \u3068\u898b\u3066\u901a\u4fe1\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>! \u5909\u63db\u306e\u5b9a\u7fa9\uff08\u5185\u2192\u5916\u3001\u5916\u2192\u5185\uff09\nip nat inside source static 192.168.1.10 10.1.1.20\nip nat outside source static 10.1.1.10 192.168.1.20\n\n! \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5411\u304d\ninterface GigabitEthernet0\/1\n ip address 192.168.1.254 255.255.255.0\n ip nat inside\n!\ninterface GigabitEthernet0\/0\n ip address 10.1.1.254 255.255.255.0\n ip nat outside\n\n! outside static\u7528\u306e\u5230\u9054\u6027\u3092\u78ba\u4fdd\uff08\u3069\u3061\u3089\u304b\u4e00\u65b9\u3092\u63a1\u7528\uff09\nip route 192.168.1.20 255.255.255.255 GigabitEthernet0\/0\n! \u3042\u308b\u3044\u306f\n! ip nat outside source static 10.1.1.10 192.168.1.20 add-route<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u52d5\u304d\u65b9\u3092\u5177\u4f53\u7684\u306b\u8ffd\u3046\u3068\u3001\u5185\u5074PC\u304c 192.168.1.20 \u3078\u9001\u308b\u3068\u304d\u3001\u540c\u4e00\u30b5\u30d6\u30cd\u30c3\u30c8\u5b9b\u3060\u3068\u5224\u65ad\u3057\u3066 ARP \u3092\u51fa\u3057\u307e\u3059\u3002192.168.1.20 \u306fNAT\u30eb\u30fc\u30bf\u304c\u201c\u6301\u3064\u201d\u4eee\u60f3IP\u306a\u306e\u3067\u3001\u30eb\u30fc\u30bf\u304cARP\u306b\u5fdc\u7b54\u3057\u3066\u30d5\u30ec\u30fc\u30e0\u3092\u53d7\u3051\u53d6\u308a\u3001\u5b9b\u5148\u3092 10.1.1.10\u3001\u9001\u4fe1\u5143\u3092 10.1.1.20 \u306b\u66f8\u304d\u66ff\u3048\u3066\u5916\u5074\u306b\u8ee2\u9001\u3057\u307e\u3059\u3002\u5916\u5074\u30b5\u30fc\u30d0\u304b\u3089\u898b\u308c\u3070\u76f8\u624b\u306f 10.1.1.20 \u306b\u3057\u304b\u898b\u3048\u306a\u3044\u305f\u3081\u3001\u672c\u7269\u306e 192.168.1.10 \u3092\u77e5\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u5916\u5074\u30b5\u30fc\u30d0\u304c 10.1.1.20 \u5b9b\u306b\u8fd4\u3059\u3068\u3001\u4eca\u5ea6\u306fNAT\u30eb\u30fc\u30bf\u304c\u53d7\u3051\u3066 192.168.1.20 \u5b9b\u306b\u5909\u63db\u3057\u3001\u540c\u3058\u304f\u81ea\u5206\u306e\u4eee\u60f3IP\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u3001\u6700\u7d42\u7684\u306b 192.168.1.10 \u3078\u5c4a\u3051\u307e\u3059\u3002\u3069\u3061\u3089\u306e\u30db\u30b9\u30c8\u3082\u201c\u540c\u4e00\u30bb\u30b0\u30e1\u30f3\u30c8\u306e\u76f8\u624b\u201d\u306b\u8a71\u3057\u3066\u3044\u308b\u4f53\u88c1\u306e\u305f\u3081\u3001<strong>\u3053\u306e\u4f8b\u306b\u9650\u3063\u3066\u306f<\/strong>\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u306e\u8a2d\u5b9a\u304c\u306a\u304f\u3066\u3082\u5f80\u5fa9\u3067\u304d\u307e\u3059\uff08\u76f8\u624b\u304c\u4eee\u60f3IP\uff1d\u30eb\u30fc\u30bf\u76f4\u7d50\u306b\u898b\u3048\u308b\u305f\u3081\u3067\u3059\uff09\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">NAT\u30c6\u30fc\u30d6\u30eb\u306e\u8aad\u307f\u65b9\uff08\u9759\u7684\u306b\u751f\u6210\u3055\u308c\u308b\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u53cc\u65b9\u5411NAT\u306f\u9759\u7684\u5909\u63db\u306a\u306e\u3067\u3001\u8a2d\u5b9a\u76f4\u5f8c\u304b\u3089 <code>show ip nat translations<\/code> \u306b\u884c\u304c\u73fe\u308c\u307e\u3059\u3002\u4ee3\u8868\u7684\u306a\u8868\u793a\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Inside global   Inside local     Outside local     Outside global\n10.1.1.20       192.168.1.10     ---               ---\n---              ---              192.168.1.20     10.1.1.10<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u6bb5\u306f\u300c\u5185\u5074\u2192\u5916\u5074\u300d\u306e\u5199\u50cf\u3067\u3001192.168.1.10 \u3092 10.1.1.20 \u3068\u3057\u3066\u6271\u3046\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002\u4e0b\u6bb5\u306f\u300c\u5916\u5074\u2192\u5185\u5074\u300d\u306e\u5199\u50cf\u3067\u300110.1.1.10 \u3092 192.168.1.20 \u3068\u3057\u3066\u6271\u3046\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002\u3069\u3061\u3089\u3082\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u4f34\u308f\u306a\u3044\u201cIP\u306e\u307f\u306e\u9759\u7684\u5909\u63db\u201d\u3067\u3042\u308b\u70b9\u304c\u3001PAT\u306e\u51fa\u529b\u3068\u5927\u304d\u304f\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u306a\u305c\u30b9\u30bf\u30c6\u30a3\u30c3\u30af\u30eb\u30fc\u30c8\u3084 add-route \u304c\u5fc5\u8981\u306a\u306e\u304b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><code>ip nat outside source static<\/code> \u3092\u5165\u308c\u308b\u3068\u3001\u5185\u5074\u306b\u898b\u305b\u308b\u4eee\u60f3IP\uff08\u3053\u3053\u3067\u306f 192.168.1.20\uff09\u306fNAT\u30eb\u30fc\u30bf\u304c\u201c\u6240\u6709\u3057\u3066\u3044\u308b\u4f53\u201d\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002\u30eb\u30fc\u30bf\u304c\u305d\u306eIP\u5b9b\u306e\u30d5\u30ec\u30fc\u30e0\u3092\u78ba\u5b9f\u306b\u81ea\u5206\u5b9b\u3066\u3068\u3057\u3066\u3055\u3070\u3051\u308b\u3088\u3046\u3001\/32 \u306e\u5230\u9054\u6027\u3092\u5916\u5074\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5074\u306b\u660e\u793a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u65b9\u6cd5\u306f2\u901a\u308a\u3067\u3001\u56fa\u5b9a\u30eb\u30fc\u30c8\u3092\u7f6e\u304f\u304b\u3001\u30b3\u30de\u30f3\u30c9\u672b\u5c3e\u306b <code>add-route<\/code> \u3092\u4ed8\u3051\u3066\u81ea\u52d5\u751f\u6210\u3055\u305b\u307e\u3059\u3002\u3069\u3061\u3089\u3067\u3082\u76ee\u7684\u306f\u540c\u3058\u3067\u3001\u300c\u305d\u306e\u4eee\u60f3IP\u306f\u30eb\u30fc\u30bf\u304c\u63e1\u308b\u7279\u5225\u306a\u7d42\u7aef\u300d\u3067\u3042\u308b\u3053\u3068\u3092\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u53cd\u6620\u3055\u305b\u308b\u305f\u3081\u3067\u3059\u3002\u3053\u3053\u306f\u8a66\u9a13\u3067\u3053\u3046\u554f\u308f\u308c\u3084\u3059\u3044\u3002<code>ip nat outside source static ... add-route<\/code> \u3092\u898b\u305f\u3089\u300c\u4eee\u60f3IP\u3078\u306e\u5230\u9054\u6027\u3092\u81ea\u52d5\u3067\u4f5c\u308b\u305f\u3081\u300d\u3068\u8aac\u660e\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u691c\u8a3c\u306e\u30b3\u30c4\u3068\u78ba\u8a8d\u30b3\u30de\u30f3\u30c9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u52d5\u4f5c\u78ba\u8a8d\u306f\u3001NAT\u3068ARP\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u898b\u308b\u3068\u7406\u89e3\u304c\u65e9\u307e\u308a\u307e\u3059\u3002<code>show ip nat translations<\/code> \u3067\u9759\u7684\u30a8\u30f3\u30c8\u30ea\u304c\u8f09\u3063\u3066\u3044\u308b\u304b\u3092\u78ba\u304b\u3081\u3001<code>show ip arp<\/code> \u3067 192.168.1.20 \u3068 10.1.1.20 \u306b\u5bfe\u3057\u3066NAT\u30eb\u30fc\u30bf\u81ea\u8eab\u306eMAC\u304c\u5fdc\u7b54\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u30d1\u30b1\u30c3\u30c8\u306e\u7d4c\u8def\u3092\u8ffd\u3044\u305f\u3044\u3068\u304d\u306f <code>debug ip nat<\/code> \u3092\u4f7f\u3046\u3068\u3001\u9001\u4fe1\u5143\u30fb\u5b9b\u5148\u304c\u4eee\u60f3IP\u3078\u7f6e\u304d\u63db\u308f\u308b\u69d8\u5b50\u304c\u305d\u306e\u5834\u3067\u898b\u3048\u307e\u3059\u3002\u3082\u3057\u901a\u4fe1\u3067\u304d\u306a\u3044\u5834\u5408\u306f\u3001inside\/outside \u306e\u5411\u304d\u3001<code>add-route<\/code> \u3082\u3057\u304f\u306f\/32\u30eb\u30fc\u30c8\u306e\u6709\u7121\u3001\u305d\u3057\u3066\u4ed6\u6a5f\u5668\u306b 192.168.1.20 \u3084 10.1.1.20 \u3092\u5b9fIP\u3068\u3057\u3066\u5272\u308a\u5f53\u3066\u3066\u3044\u306a\u3044\u304b\u3092\u9806\u306b\u70b9\u691c\u3059\u308b\u3068\u3001\u89e3\u6c7a\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3064\u307e\u305a\u304d\u3084\u3059\u3044\u843d\u3068\u3057\u7a74<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5185\u5916\u3069\u3061\u3089\u304b\u4e00\u65b9\u306e static \u3057\u304b\u5165\u3063\u3066\u3044\u306a\u3044\u3068\u201c\u534a\u5206\u3060\u3051\u201d\u306eNAT\u306b\u306a\u308a\u3001\u671f\u5f85\u3069\u304a\u308a\u306e\u5bfe\u5411\u8a8d\u8b58\u306b\u306a\u308a\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u4eee\u60f3IP\u3068\u3057\u3066\u4f7f\u3046 192.168.1.20 \u3084 10.1.1.20 \u3092\u3001\u5b9f\u30db\u30b9\u30c8\u306b\u914d\u3063\u3066\u3057\u307e\u3046\u3068ARP\u306e\u6240\u6709\u6a29\u304c\u7af6\u5408\u3057\u3066\u4e0d\u5b89\u5b9a\u306b\u306a\u308a\u307e\u3059\u3002\u4eee\u60f3IP\u306f\u201c\u30eb\u30fc\u30bf\u5c02\u7528\u306e\u770b\u677f\u201d\u3060\u3068\u8003\u3048\u3001\u307b\u304b\u306e\u6a5f\u5668\u306b\u91cd\u306d\u306a\u3044\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002\u3082\u3046\u4e00\u70b9\u3001Twice NAT\u306f\u201c\u540c\u4e00\u30ea\u30f3\u30af\u5185\u3067\u76f8\u624b\u304c\u30ed\u30fc\u30ab\u30eb\u306b\u898b\u3048\u308b\u201d\u524d\u63d0\u3067\u8a71\u3057\u307e\u3057\u305f\u304c\u3001\u5b9f\u74b0\u5883\u3067\u306f\u30bb\u30b0\u30e1\u30f3\u30c8\u3084VLAN\u8a2d\u8a08\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30dd\u30ea\u30b7\u30fc\u3092\u8e0f\u307e\u3048\u3001\u5fc5\u8981\u306a\u3089\u901a\u5e38\u3069\u304a\u308a\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3082\u6b63\u3057\u304f\u8a2d\u5b9a\u3057\u3066\u304a\u304f\u3068\u3001\u30c8\u30e9\u30d6\u30eb\u6642\u306e\u5207\u308a\u5206\u3051\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a<br>\u53cc\u65b9\u5411NAT\u306f\u300cinside\u7528static\u300d\u3068\u300coutside\u7528static\u300d\u306e<strong>\u4e8c\u672c\u7acb\u3066<\/strong>\u3067\u69cb\u6210\u3055\u308c\u3001\u8a2d\u5b9a\u76f4\u5f8c\u304b\u3089\u5909\u63db\u8868\u304c\u9759\u7684\u306b\u8f09\u308b\u3053\u3068\u3001<code>outside source static<\/code> \u3067\u306f <code>add-route<\/code> \u307e\u305f\u306f \/32 \u306e\u30b9\u30bf\u30c6\u30a3\u30c3\u30af\u30eb\u30fc\u30c8\u304c\u767b\u5834\u3057\u3084\u3059\u3044\u3053\u3068\u3001\u3053\u306e\u4e09\u70b9\u304c\u983b\u51fa\u3067\u3059\u3002\u51fa\u529b\u4f8b\u3092\u898b\u305b\u3089\u308c\u305f\u3089\u3001\u4eee\u60f3IP\u304c\u3069\u3061\u3089\u5411\u3051\u306e\u201c\u898b\u305b\u304b\u3051\u201d\u306a\u306e\u304b\u3092\u8a00\u8449\u3067\u8aac\u660e\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304f\u3068\u3001\u5f97\u70b9\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u25c6\u307e\u3068\u3081\u30b9\u30e9\u30a4\u30c9<\/h2>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2025\/05\/NAT\uff08\u8a2d\u5b9a\uff09.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"NAT\uff08\u8a2d\u5b9a\uff09\u306e\u57cb\u3081\u8fbc\u307f\u3002\"><\/object><a id=\"wp-block-file--media-44500b5a-e1f7-46b1-89e2-54086965ef5e\" href=\"https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2025\/05\/NAT\uff08\u8a2d\u5b9a\uff09.pdf\">NAT\uff08\u8a2d\u5b9a\uff09<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u306e\u57fa\u672c\u3068\u8a2d\u5b9a\u65b9\u6cd5 \u30b9\u30bf\u30c6\u30a3\u30c3\u30afNAT\u306f\u3001\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u4f7f\u308f\u308c\u3066\u3044\u308b\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IP\u30a2\u30c9\u30ec\u30b9\u3092\u3001\u56fa\u5b9a\u7684\u306b\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u3078\u5909\u63db\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u305d\u306e\u8a2d\u5b9a\u624b\u9806\u3068\u52d5\u4f5c\u306e\u6d41\u308c\u3092\u6574\u7406\u3057\u3066\u5b66\u3093\u3067\u3044 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-249","post","type-post","status-publish","format-standard","hentry","category-ip-service"],"_links":{"self":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/249","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=249"}],"version-history":[{"count":3,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/249\/revisions"}],"predecessor-version":[{"id":756,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/249\/revisions\/756"}],"wp:attachment":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=249"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}