{"id":16086,"date":"2021-12-30T09:56:13","date_gmt":"2021-12-30T00:56:13","guid":{"rendered":"http:\/\/www.code-magagine.com\/?p=16086"},"modified":"2023-05-28T08:40:09","modified_gmt":"2023-05-27T23:40:09","slug":"%e3%80%90%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e3%80%91%e3%80%8csymmetric%e3%82%b7%e3%83%b3%e3%83%a1%e3%83%88%e3%83%aa%e3%83%83%e3%82%af-nat%e3%80%8d%e3%81%a8%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/www.code-magagine.com\/?p=16086","title":{"rendered":"\u3010\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3011\u300cNAT\u30bf\u30a4\u30d7\u300d\u3068\u306f\uff1f"},"content":{"rendered":"

NAT\u30bf\u30a4\u30d7\u3068\u306f\uff1f<\/h2>\n

NAT\u5909\u63db\u3059\u308b\u969b\u306e\u30dd\u30fc\u30c8\u756a\u53f7\u3001\u9006\u5909\u63db\u306e\u5bfe\u8c61\u306b\u95a2\u9023\u3059\u308b\u30bf\u30a4\u30d7\u5206\u3051\u3067\u3059\u3002\uff08\u52d5\u7684NAT\u3001\u9759\u7684NAT\u3001NAPT\u306a\u3069\u3068\u306f\u307e\u305f\u5225\u306e\u5206\u985e\u3067\u3059\u3002\uff09\u3001\u5bb6\u5ead\u7528\u306eBBR(\u30d6\u30ed\u30fc\u30c9\u30d0\u30f3\u30c9\u30eb\u30fc\u30bf)\u3067\u306f\u8a2d\u5b9a\u306f\u5909\u66f4\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

NAT\u30bf\u30a4\u30d7\u306e\u5927\u307e\u304b\u306a\u5206\u985e<\/h2>\n

cone\u578b\u3068Symmetric\u578b\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

cone\u578b<\/h3>\n

\u5b9b\u5148\u306b\u95a2\u308f\u3089\u305a\u3001\u552f\u4e00\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u751f\u6210\u3057\u307e\u3059\u3002<\/p>\n

\u30a4\u30e1\u30fc\u30b8\u56f3<\/h4>\n

\"\"<\/p>\n

\u5f8c\u306f\u3001LAN\u5074\u306eNAT\u304cWAN\u5074\u3078\u4e00\u5ea6\u3067\u3082\u9001\u4fe1\u3057\u305f\u3053\u3068\u304c\u3042\u308b\u304b\u3067\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ec\u30d9\u30eb\u304c\u5909\u308f\u3063\u3066\u304d\u307e\u3059\u3002\u305f\u3060\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ec\u30d9\u30eb\u304c\u9ad8\u304f\u306a\u3063\u305f\u3068\u3057\u3066\u3082\uff08address restricted port\u3084port restricted port\u304c\u4f7f\u308f\u308c\u305f\u5834\u5408\u3067\u3082\uff09\u30af\u30e9\u30a4\u30a2\u30f3\u30c8A\u3068\u30af\u30e9\u30a4\u30a2\u30f3\u30c8B\u3067\u4e00\u5ea6\u9001\u53d7\u4fe1\u3092\u884c\u3048\u3070\u76f8\u624b\u306eNAT\u306b\u901a\u4fe1\u5c65\u6b74\u304c\u767b\u9332\u3055\u308c\u308b\u306e\u3067\u3001\u5411\u3053\u3046\u5074\u304b\u3089\u306e\u901a\u4fe1\u304c\u6210\u529f\u3059\u308b\u306e\u3067UDP\u30db\u30fc\u30eb\u30d1\u30f3\u30c1\u30f3\u30b0\u306f\u6210\u529f\u3057\u307e\u3059\u3002<\/p>\n

Symmetric\u578b<\/h3>\n

\u5b9b\u5148\u3054\u3068\u306b\u52d5\u7684\u306b\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u751f\u6210\u3057\u307e\u3059\u3002\u306a\u306e\u3067\u3001cone\u578b\u306e\u3088\u3046\u306b\u4e00\u5ea6\u5931\u6557\u3057\u3066NAT\u30c6\u30fc\u30d6\u30eb\u306b\u5b9b\u5148\u3092\u8a18\u61b6\u3055\u305b\u3066\u30a2\u30af\u30bb\u30b9\u3055\u305b\u308b\u3068\u3044\u3046\u3088\u3046\u306a\u624b\u6cd5\u306f\u4f7f\u3048\u307e\u305b\u3093\u3002<\/p>\n

NAT\u30bf\u30a4\u30d7\u306e\u7a2e\u985e<\/h2>\n

Full cone(\u30d5\u30eb\u30b3\u30fc\u30f3) NAT\uff08\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ec\u30d9\u30eb\u304c\u4f4e\u3044\uff09<\/h3>\n

\u300c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5074\u304b\u3089LAN\u5074\u3078\u306e\u901a\u4fe1\u306b\u304a\u3044\u3066\u3001\u4e00\u5ea6\u3082\u9001\u4fe1\u3057\u305f\u3053\u3068\u304c\u306a\u3044IP\u30a2\u30c9\u30ec\u30b9\u3067\u3082\u53d7\u4fe1\u53ef\u80fd\u306a\u65b9\u5f0f\u300d<\/strong><\/span>\u3067\u3059\u3002(\u306a\u304a\u3001UPnP\u306e\u30dd\u30fc\u30c8\u30de\u30c3\u30d4\u30f3\u30b0\u306f\u307b\u307c\u3053\u308c\u306b\u8a72\u5f53\u3057\u307e\u3059\u3002\uff09<\/p>\n

\u4e00\u5ea6NAT\u306e\u5909\u63db\u3055\u308c\u3001\u5bfe\u5fdc\u30a8\u30f3\u30c8\u30ea\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306b\u306f\u3001\u4e00\u5ea6\u3082\u9001\u4fe1\u3057\u305f\u3053\u3068\u306e\u306a\u3044WAN\u5074\u306e\u7aef\u672b\u304b\u3089\u306e\u30d1\u30b1\u30c3\u30c8\u3082\u30a8\u30f3\u30c8\u30ea\u304c\u5b58\u5728\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\uff1aPort\u756a\u53f7\u5b9b\u3066\u306b\u30d1\u30b1\u30c3\u30c8\u304c\u5c4a\u3044\u305f\u5834\u5408\u306fLAN\u5074\u306b\u8ee2\u9001\u3059\u308b\u3002<\/p>\n

Address-Restricted cone\uff08\u5236\u9650\u4ed8\u304d\u30b3\u30fc\u30f3\uff09 NAT\uff08\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ec\u30d9\u30eb\u304c\u4f4e\u3081\uff09<\/h3>\n

\u300c\u4e00\u5ea6\u9001\u4fe1\u3057\u305f\u7aef\u672b\uff08NAT\u30c7\u30d0\u30a4\u30b9\u4e0a\u306bWAN\u5074\u306b\u9001\u4fe1\u5148\u30a2\u30c9\u30ec\u30b9\u306e\u30a8\u30f3\u30c8\u30ea\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\uff09\u3067\u3042\u308c\u3070\u53d7\u4fe1\u53ef\u80fd\u300d<\/strong><\/span>\u306a\u65b9\u5f0f\u3067\u3059\u3002<\/p>\n

\u4e00\u5ea6\u9001\u4fe1\u3057\u305f\u3053\u3068\u306e\u3042\u308b\u7aef\u672b\u304b\u3089\u306e\u30d1\u30b1\u30c3\u30c8(\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u304c\u4e00\u5ea6\u9001\u4fe1\u3057\u305f\u3053\u3068\u3042\u308b\u7aef\u672b\u306e\u3082)\u3067\u3042\u308b\u306a\u3089\u3070\u3001WAN\u5074\u304b\u3089\u306e\u30a8\u30f3\u30c8\u30ea\u304c\u5b58\u5728\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\uff1aPort\u756a\u53f7\u5b9b\u3066\u306b\u30d1\u30b1\u30c3\u30c8\u304c\u5c4a\u3044\u305f\u5834\u5408\u306fLAN\u5074\u306b\u8ee2\u9001\u3059\u308b\u3002<\/p>\n

Port-Restricted cone\uff08\u30dd\u30fc\u30c8\u5236\u9650\u4ed8\u304d\u30b3\u30fc\u30f3\uff09NAT\uff08\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ec\u30d9\u30eb\u304c\u9ad8\u3081\uff09<\/h3>\n

\u300c\u4e00\u5ea6\u9001\u4fe1\u3057\u305f\u7aef\u672b\uff08NAT\u30c7\u30d0\u30a4\u30b9\u4e0a\u306bWAN\u5074\u306b\u9001\u4fe1\u5148\u30a2\u30c9\u30ec\u30b9\u3068\u9001\u308a\u5143Port\u306e\u30a8\u30f3\u30c8\u30ea\u304c\u5b58\u5728\u3059\u308b\uff09\u3067\u3042\u308c\u3070\u53d7\u4fe1\u53ef\u80fd\u300d<\/strong><\/span>\u3067\u3059\u3002<\/p>\n

\u4e00\u5ea6\u9001\u4fe1\u3057\u305f\u3053\u3068\u306e\u3042\u308b\u7aef\u672b\u304b\u3089\u306e\u30d1\u30b1\u30c3\u30c8(\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\uff1aPort\u756a\u53f7\u304c\u4e00\u5ea6\u9001\u4fe1\u3057\u305f\u3053\u3068\u3042\u308b\u7aef\u672b\u306e\u3082)\u3067\u3042\u308b\u306a\u3089\u3070\u3001WAN\u5074\u304b\u3089\u306e\u30a8\u30f3\u30c8\u30ea\u304c\u5b58\u5728\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\uff1aPort\u756a\u53f7\u5b9b\u3066\u306b\u30d1\u30b1\u30c3\u30c8\u304c\u5c4a\u3044\u305f\u5834\u5408\u306fLAN\u5074\u306b\u8ee2\u9001\u3059\u308b\u3002
\n*\u3064\u307e\u308a\u3001WAN\u5074\u304b\u3089\u304d\u305f\u30d1\u30b1\u30c3\u30c8\u306e\u9001\u4fe1\u5143IP\u3068port\u304c\u4e00\u56de\u9001\u4fe1\u3057\u305f\u3053\u3068\u306e\u3042\u308b\u3084\u3064\u3058\u3083\u306a\u3044\u3068\u901a\u3055\u306a\u3044\u3063\u3066\u3053\u3068\u3067\u3059\u306d\u3002<\/p>\n

Symmetric\uff08\u30b7\u30de\u30f3\u30c6\u30c3\u30af\u3001\u5bfe\u8c61\u578b\uff09 NAT\uff08\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ec\u30d9\u30eb\u304c\u9ad8\u3044\uff09<\/h3>\n

\u5bfe\u8c61\u578bNAT\u306f\u6700\u3082\u5236\u9650\u306e\u53b3\u3057\u3044\u3082\u306e\u3067\u3001\u300c\u5b9b\u5148\u30a2\u30c9\u30ec\u30b9\u3068\u30dd\u30fc\u30c8\u3092\u7528\u3044\u3066\u63a5\u7d9a\u5148\u3092\u533a\u5225\u3057\u3001\u4e00\u3064\u306e\u63a5\u7d9a\u5148\u306b\u5bfe\u3057\u4e00\u3064\u306e\u30a2\u30c9\u30ec\u30b9\u5909\u63db\u3092\u7528\u3044\u308b\u300d<\/strong><\/span>\u65b9\u5f0f\u3067\u3059\u3002<\/p>\n

LAN\u5074\u306eIP\u30a2\u30c9\u30ec\u30b9\uff1aPort\u756a\u53f7\u3068NAT\u5909\u63db\u3055\u308c\u308bWAN\u5074\u306eIP\u30a2\u30c9\u30ec\u30b9\uff1aPort\u756a\u53f7\u304c1\u5bfe1\u306b\u5bfe\u5fdc\u3057\u3001WAN\u5074\u306e\u5b9b\u5148\u6bce\u306b\u5909\u63db\u3055\u308c\u308bport\u756a\u53f7\u304c\u5909\u308f\u308b\u3002
\n*LAN\u5074\u306e\u7aef\u672bA(192.168.1.1,port1000)\u304cWAN\u5074\u306e\u7aef\u672bB(10.10.10.1,port80)\u306b\u5bfe\u3057\u3066\u30d1\u30b1\u30c3\u30c8\u3092\u9001\u4fe1\u3059\u308b\u969b\u306b\u306fNAT\u5909\u63db\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u3068Port\u756a\u53f7\u306f(\u4eee10.10.10.100,port1000)\u3068\u306a\u308b\u304c\u3001LAN\u5074\u306e\u7aef\u672bA(192.168.1.1,port1000)\u304cWAN\u5074\u306e\u7aef\u672bC(10.10.10.2,port80)\u306b\u5bfe\u3057\u3066\u30d1\u30b1\u30c3\u30c8\u3092\u9001\u4fe1\u3059\u308b\u969b\u306b\u306fNAT\u5909\u63db\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u3068Port\u756a\u53f7\u306f(\u4eee10.10.10.100,port1001)\u3068\u306a\u308b\u3002\u3088\u308a\u5177\u4f53\u7684\u306b\u306f\u5b9b\u5148B\u306eport80\u3068port20\u306b\u5bfe\u3057\u3066\u30d1\u30b1\u30c3\u30c8\u3092\u9001\u4fe1\u3057\u305f\u5834\u5408\u306b\u3082\u540c\u69d8\u306b\u5909\u63db\u3055\u308c\u308b\u6b73\u306e\u30dd\u30fc\u30c8\u756a\u53f7\u304c\u5909\u308f\u308b\u3053\u3068\u306b\u306a\u308b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"NAT\u30bf\u30a4\u30d7\u3068\u306f\uff1f NAT\u5909\u63db\u3059\u308b\u969b\u306e\u30dd\u30fc\u30c8\u756a\u53f7\u3001\u9006\u5909\u63db\u306e\u5bfe\u8c61\u306b\u95a2\u9023\u3059\u308b\u30bf\u30a4\u30d7\u5206\u3051\u3067\u3059\u3002\uff08\u52d5\u7684NAT\u3001\u9759\u7684NAT\u3001NAPT\u306a\u3069\u3068\u306f\u307e\u305f\u5225\u306e\u5206\u985e\u3067\u3059\u3002\uff09\u3001\u5bb6\u5ead\u7528\u306eBBR(\u30d6\u30ed\u30fc\u30c9\u30d0\u30f3\u30c9\u30eb\u30fc\u30bf)\u3067\u306f\u8a2d\u5b9a\u306f\u5909\u66f4\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u306a […]","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[89],"tags":[],"_links":{"self":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/16086"}],"collection":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=16086"}],"version-history":[{"count":10,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/16086\/revisions"}],"predecessor-version":[{"id":20777,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/16086\/revisions\/20777"}],"wp:attachment":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16086"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16086"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16086"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}