{"id":3808,"date":"2025-05-30T07:57:57","date_gmt":"2025-05-29T22:57:57","guid":{"rendered":"https:\/\/venu-sys.co.jp\/jo-sys\/?p=3808"},"modified":"2025-05-30T07:58:00","modified_gmt":"2025-05-29T22:58:00","slug":"nat%e3%81%a8%e3%81%af%ef%bc%9f%e5%bf%85%e8%a6%81%e3%81%a8%e3%81%95%e3%82%8c%e3%82%8b%e8%83%8c%e6%99%af%e3%82%84%e4%bb%95%e7%b5%84%e3%81%bf%e3%80%81napt%e3%81%a8%e3%81%ae%e9%81%95%e3%81%84%e3%82%92","status":"publish","type":"post","link":"https:\/\/venu-sys.co.jp\/jo-sys\/3808\/","title":{"rendered":"NAT\u3068\u306f\uff1f\u5fc5\u8981\u3068\u3055\u308c\u308b\u80cc\u666f\u3084\u4ed5\u7d44\u307f\u3001NAPT\u3068\u306e\u9055\u3044\u3092\u56f3\u89e3\u3067\u89e3\u8aac"},"content":{"rendered":"<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"blue\"><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p>IP\u30a2\u30c9\u30ec\u30b9\u3063\u3066\u67af\u6e07\u3059\u308b\u3082\u306e\u306a\u306e\uff1f<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"blue\"><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p>1\u3064\u306e\u30cd\u30c3\u30c8\u56de\u7dda\u306b\u8907\u6570\u53f0\u3064\u306a\u3044\u3067\u3082\u5927\u4e08\u592b\u306a\u306e\uff1f<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"blue\"><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p>NAT\u3068\u304bNAPT\u3063\u3066\u7d50\u5c40\u3069\u3046\u9055\u3046\u306e\uff1f<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u7591\u554f\u3092\u6301\u3064\u4eba\u3082\u5c11\u306a\u304f\u306a\u3044\u3067\u3057\u3087\u3046\u3002\u7279\u306bIT\u62c5\u5f53\u8005\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u7ba1\u7406\u3092\u4efb\u3055\u308c\u305f\u4eba\u306b\u3068\u3063\u3066\u3001NAT\u306f\u899a\u3048\u3066\u304a\u304f\u3079\u304d\u6280\u8853\u306e\u3072\u3068\u3064\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u666e\u53ca\u3068\u3068\u3082\u306b\u3001IP\u30a2\u30c9\u30ec\u30b9\u306e\u6570\u306f\u8db3\u308a\u306a\u304f\u306a\u3063\u3066\u304d\u307e\u3057\u305f\u3002<strong><span class=\"swl-marker mark_yellow\">IP\u30a2\u30c9\u30ec\u30b9\u306e\u67af\u6e07\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u767b\u5834\u3057\u305f\u306e\u304cNAT<\/span><\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u4f01\u696d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3084\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc\u306b\u3082\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u308bNAT\u306e\u4ed5\u7d44\u307f\u3084NAPT\u3068\u306e\u9055\u3044\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_announce\">\u8a18\u4e8b\u3092\u8aad\u3081\u3070\u3001NAT\u306e\u57fa\u672c\u304b\u3089\u6d3b\u7528\u65b9\u6cd5\u307e\u3067\u3001\u521d\u5fc3\u8005\u3067\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">NAT\u3068\u306f\uff1f\u8907\u6570\u306e\u7aef\u672b\u30921\u3064\u306eIP\u30a2\u30c9\u30ec\u30b9\u3067\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u63a5\u7d9a\u3067\u304d\u308b\u6280\u8853<\/h2>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u306f\u3001NAT\u306e\u57fa\u672c\u77e5\u8b58\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6982\u8981\u306b\u52a0\u3048\u3066\u5fc5\u8981\u3068\u3055\u308c\u308b\u80cc\u666f\u3082\u78ba\u8a8d\u3057\u3001NAT\u306e\u7406\u89e3\u3092\u6df1\u3081\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">NAT\u306e\u5f79\u5272\u306f\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IP\u3068\u30b0\u30ed\u30fc\u30d0\u30ebIP\u3092\u3064\u306a\u3050\u3053\u3068<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/05\/NAT-1024x576.png\" alt=\"NAT\u306e\u5f79\u5272\u306f\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IP\u3068\u30b0\u30ed\u30fc\u30d0\u30ebIP\u3092\u3064\u306a\u3050\u3053\u3068\" class=\"wp-image-3908\" srcset=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/05\/NAT-1024x576.png 1024w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/05\/NAT-300x169.png 300w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/05\/NAT-768x432.png 768w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/05\/NAT.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>NAT\u3068\u306f\u3001<strong><span class=\"swl-marker mark_yellow\">\u8907\u6570\u306e\u7aef\u672b\u304c1\u3064\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3063\u3066\u5916\u90e8\u3068\u901a\u4fe1\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u6280\u8853<\/span><\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5177\u4f53\u7684\u306b\u306f\u3001\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u4f7f\u308f\u308c\u308b\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IP\u30a2\u30c9\u30ec\u30b9\u3068\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u4f7f\u3046\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u3092\u5909\u63db\u3057\u3066\u3064\u306a\u3050\u5f79\u5272\u3092\u62c5\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IP\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u306f\u76f4\u63a5\u3064\u306a\u304c\u308a\u307e\u305b\u3093\u304c\u3001NAT\u3092\u4ecb\u3059\u308b\u3053\u3068\u3067\u5916\u90e8\u30b5\u30a4\u30c8\u3068\u5b89\u5168\u306b\u901a\u4fe1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u9650\u3089\u308c\u305f\u30b0\u30ed\u30fc\u30d0\u30ebIP\u3092\u52b9\u7387\u7684\u306b\u4f7f\u3044\u307e\u308f\u305b\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u5916\u90e8\u304b\u3089\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3082\u9632\u304e\u3084\u3059\u304f\u306a\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e57\u306e\u5229\u70b9\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">NAT\u304c\u5fc5\u8981\u3068\u3055\u308c\u308b\u80cc\u666f<\/h3>\n\n\n\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u304c\u666e\u53ca\u3059\u308b\u306b\u3064\u308c\u3001\u4f7f\u7528\u3059\u308b\u30c7\u30d0\u30a4\u30b9\u306e\u6570\u3082\u6025\u5897\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box is-style-onborder_ttl2\"><div class=\"cap_box_ttl\" data-has-icon=\"1\"><svg height=\"1em\" width=\"1em\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" viewBox=\"0 0 48 48\"><path d=\"M32 46.5H16c-1.1 0-2-.9-2-2s.9-2 2-2h16c1.1 0 2 .9 2 2s-.9 2-2 2zM33.3 18.6c-.7 0-1.3-.5-1.5-1.2-.7-3.2-3.2-5.7-6.4-6.3-.8-.1-1.4-.9-1.2-1.7s.9-1.4 1.7-1.2c4.4.8 8 4.2 8.9 8.6.2.8-.4 1.6-1.2 1.8h-.3z\"><\/path><path d=\"M30 40.5H18c-2.2 0-4-1.8-4-4v-1.6c0-.6-.3-1.1-.8-1.5C8.4 29.8 5.7 24 6 18c.5-9.1 8-16.6 17.1-17C29 .8 34.5 3.2 38.2 8c1.8 2.3 3 5.1 3.5 7.9 1.1 6.8-1.5 13.3-6.9 17.4-.6.4-.9 1-.9 1.7v1.5c.1 2.2-1.7 4-3.9 4zM23.3 5c-7.1.3-12.9 6.2-13.3 13.2-.2 4.7 1.8 9.1 5.6 11.9 1.5 1.1 2.4 2.9 2.4 4.7v.6c0 .6.4 1 1 1h10c.6 0 1-.4 1-1V35c0-1.9.9-3.7 2.5-4.8 4.3-3.2 6.3-8.5 5.3-13.9-.4-2-1.2-3.8-2.4-5.4-3-4-7.4-6.1-12.1-5.9z\"><\/path><\/svg><span>\u30c7\u30b8\u30bf\u30eb\u30c7\u30d0\u30a4\u30b9\u306e\u4f8b<\/span><\/div><div class=\"cap_box_content\">\n<ul class=\"wp-block-list is-style-check_list\">\n<li>\u30d1\u30bd\u30b3\u30f3<\/li>\n\n\n\n<li>\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3<\/li>\n\n\n\n<li>\u30bf\u30d6\u30ec\u30c3\u30c8<\/li>\n\n\n\n<li>\u30b2\u30fc\u30e0\u6a5f<\/li>\n\n\n\n<li>\u5bb6\u96fb &#8230;etc<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>\u30d1\u30bd\u30b3\u30f3\u3084\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3001\u30bf\u30d6\u30ec\u30c3\u30c8\u306a\u3069\u306e\u30c7\u30d0\u30a4\u30b9\u304c\u5897\u52a0\u3057\u305f\u7d50\u679c\u3001IPv4\u3067\u5272\u308a\u5f53\u3066\u3089\u308c\u308bIP\u30a2\u30c9\u30ec\u30b9\u306e\u6570\uff08\u7d0443\u5104\u500b\uff09\u3067\u306f\u8db3\u308a\u306a\u304f\u306a\u308a\u3001\u6df1\u523b\u306a\u30a2\u30c9\u30ec\u30b9\u67af\u6e07\u554f\u984c\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\">IPv4\u306e\u67af\u6e07\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306e\u624b\u6bb5<\/span><\/strong>\u3068\u3057\u3066\u3001\u793e\u5185\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IP\u3092\u7528\u3044\u3001NAT\u306b\u3088\u3063\u3066\u5fc5\u8981\u6700\u5c0f\u9650\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u3067\u901a\u4fe1\u3092\u884c\u3046\u65b9\u5f0f\u304c\u63a1\u7528\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>NAT\u306e\u767b\u5834\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u6210\u9577\u3068\u591a\u69d8\u5316\u3092\u652f\u3048\u308b\u57fa\u76e4\u6280\u8853\u306e\u3072\u3068\u3064\u3068\u3044\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">NAT\u3068NAPT\u306e\u9055\u3044<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/05\/NAPT-1024x576.png\" alt=\"NAPT\u306e\u4ed5\u7d44\u307f\" class=\"wp-image-3910\" srcset=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/05\/NAPT-1024x576.png 1024w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/05\/NAPT-300x169.png 300w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/05\/NAPT-768x432.png 768w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/05\/NAPT.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>NAT\u306f\u30011\u3064\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u306b\u5bfe\u3057\u3066\u30011\u3064\u306e\u5185\u90e8IP\u30a2\u30c9\u30ec\u30b9\u3092\u5bfe\u5fdc\u3055\u305b\u3066\u5909\u63db\u3059\u308b\u6280\u8853\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u65b9NAPT\u306f\u3001<strong><span class=\"swl-marker mark_yellow\">1\u3064\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u3092\u8907\u6570\u306e\u5185\u90e8IP\u30a2\u30c9\u30ec\u30b9\u3068\u30dd\u30fc\u30c8\u756a\u53f7\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u3063\u3066\u7ba1\u7406<\/span><\/strong>\u3057\u3001\u3088\u308a\u591a\u304f\u306e\u7aef\u672b\u304c\u540c\u6642\u306b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3092\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u6280\u8853\u3067\u3059\u3002<\/p>\n\n\n\n<p>NAT\u306f\u5358\u7d14\u306a\u69cb\u6210\u306b\u5411\u3044\u3066\u3044\u307e\u3059\u304c\u3001\u540c\u6642\u63a5\u7d9a\u6570\u304c\u5236\u9650\u3055\u308c\u308b\u305f\u3081\u3001\u73fe\u4ee3\u306e\u30de\u30eb\u30c1\u30c7\u30d0\u30a4\u30b9\u74b0\u5883\u306b\u306f\u4e0d\u5411\u304d\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u5b9f\u969b\u306b\u306fNAPT\u304c\u7528\u3044\u3089\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u591a\u3044\u3068\u3044\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table style=\"font-size:12px;\" class=\"has-fixed-layout\"><thead><tr><th>\u9805\u76ee<\/th><th>NAT\uff08\u57fa\u672c\uff09<\/th><th>NAPT\uff08\u5b9f\u8cea\u6a19\u6e96\uff09<\/th><\/tr><\/thead><tbody><tr><td>\u5909\u63db\u5bfe\u8c61<\/td><td>IP\u30a2\u30c9\u30ec\u30b9<\/td><td>IP\u30a2\u30c9\u30ec\u30b9 + 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