{"id":4690,"date":"2025-10-16T11:12:00","date_gmt":"2025-10-16T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/what-is-an-ipv4-address-and-why-ipv4-addresses-matter\/"},"modified":"2026-06-22T06:17:16","modified_gmt":"2026-06-22T06:17:16","slug":"what-is-an-ipv4-address-and-why-ipv4-addresses-matter","status":"publish","type":"post","link":"https:\/\/resources.l-p.com\/ja\/glossary\/what-is-an-ipv4-address-and-why-ipv4-addresses-matter","title":{"rendered":"IPv4\u30a2\u30c9\u30ec\u30b9\u3068\u306f\u4f55\u304b\u3001\u305d\u3057\u3066\u306a\u305c\u305d\u308c\u304c\u91cd\u8981\u306a\u306e\u304b"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1408\" height=\"768\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/0b83e9a8b3c04f9485faed7f24ee824f.jpg\" alt=\"What is an IPv4 Address and Why Does It Matter\" class=\"wp-image-4688\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/0b83e9a8b3c04f9485faed7f24ee824f.jpg 1408w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/0b83e9a8b3c04f9485faed7f24ee824f-300x164.jpg 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/0b83e9a8b3c04f9485faed7f24ee824f-1024x559.jpg 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/0b83e9a8b3c04f9485faed7f24ee824f-768x419.jpg 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/0b83e9a8b3c04f9485faed7f24ee824f-18x10.jpg 18w\" sizes=\"(max-width: 1408px) 100vw, 1408px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u3059\u3079\u3066\u306e\u30c7\u30d0\u30a4\u30b9\u2014\u2014\u305f\u3068\u3048\u3070\u30ce\u30fc\u30c8\u30d1\u30bd\u30b3\u30f3\u3001\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3001\u307e\u305f\u306f\u30b9\u30de\u30fc\u30c8\u51b7\u8535\u5eab\u2014\u2014\u306f\u901a\u4fe1\u306e\u305f\u3081\u306b\u4e00\u610f\u306e\u8b58\u5225\u5b50\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u767b\u5834\u3059\u308b\u306e\u304c <strong>IPv4\u30a2\u30c9\u30ec\u30b9<\/strong> \u3067\u3059\u3002\u3053\u308c\u306f <strong>Internet Protocol Version 4\uff08\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30fb\u30d7\u30ed\u30c8\u30b3\u30eb\u7b2c4\u7248\uff09<\/strong>, \u306e\u7565\u3067\u3001 <strong>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30fb\u30d7\u30ed\u30c8\u30b3\u30eb\uff08IP\uff09<\/strong> \u306e\u7b2c4\u4e16\u4ee3\u3067\u3042\u308a\u3001\u4f55\u5341\u5e74\u306b\u3082\u308f\u305f\u3063\u3066\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u63a5\u7d9a\u6027\u3092\u652f\u3048\u3066\u304d\u305f\u4e3b\u529b\u898f\u683c\u3067\u3059\u3002IPv6\u3078\u306e\u6bb5\u968e\u7684\u306a\u79fb\u884c\u304c\u9032\u3080\u4e2d\u3067\u3082\u3001 <strong>IPv4\u30a2\u30c9\u30ec\u30b9\u7a7a\u9593<\/strong> \u306f\u3001\u4e16\u754c\u4e2d\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5927\u304d\u306a\u90e8\u5206\u306e\u57fa\u76e4\u3092\u4f9d\u7136\u3068\u3057\u3066\u652f\u3048\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u304c\u6839\u672c\u7684\u306b\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u3046\u3048\u3067\u4e0d\u53ef\u6b20\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001\u57fa\u672c\u7684\u306a\u5f62\u5f0f\u304b\u3089\u4eca\u65e5\u306e\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u74b0\u5883\u306b\u304a\u3051\u308b\u5b9f\u7528\u7684\u306a\u5fdc\u7528\u307e\u3067\u3001\u5fc5\u8981\u306a\u3059\u3079\u3066\u306e\u77e5\u8b58\u3092\u9806\u3092\u8ffd\u3063\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 \u4e3b\u306a\u30dd\u30a4\u30f3\u30c8<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><span class=\"highlight\">\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb\u30cf\u30a6\u30b8\u30f3\u30b0<\/span> <strong>IPv4\u30a2\u30c9\u30ec\u30b9<\/strong> \u306f\u3001\u3042\u306a\u305f\u306e\u30c7\u30d0\u30a4\u30b9\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\u7279\u5225\u306a\u756a\u53f7\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30d0\u30a4\u30b9\u304c\u30aa\u30f3\u30e9\u30a4\u30f3\u3067\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u30fb\u53d7\u4fe1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002.<\/p><\/li><li><p>IPv4\u30a2\u30c9\u30ec\u30b9\u306f\u3001\u30c9\u30c3\u30c8\u3067\u533a\u5207\u3089\u308c\u305f4\u3064\u306e\u6570\u5b57\u3067\u8868\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8aad\u307f\u3084\u3059\u304f\u3001\u4f7f\u3044\u3084\u3059\u3044\u69cb\u9020\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002.<\/p><\/li><li><p>IPv4\u30a2\u30c9\u30ec\u30b9\u306b\u306f\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u90e8\u306f\u30d1\u30d6\u30ea\u30c3\u30af\uff08\u516c\u958b\uff09\u30a2\u30c9\u30ec\u30b9\u3067\u3001\u4ed6\u306f\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\uff08\u79c1\u7528\uff09\u30a2\u30c9\u30ec\u30b9\u3067\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u30bf\u30a4\u30d7\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u72ec\u81ea\u306e\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002.<\/p><\/li><li><p>IPv4\u306b\u306f\u3001\u30a2\u30c9\u30ec\u30b9\u67af\u6e07\u3068\u3044\u3063\u305f\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u30c7\u30d0\u30a4\u30b9\u306b\u4e00\u610f\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u5272\u308a\u5f53\u3066\u308b\u306b\u306f\u3001\u5341\u5206\u306a\u6570\u304c\u6b8b\u3063\u3066\u3044\u307e\u305b\u3093\u3002.<\/p><\/li><li><p>IPv4\u306b\u3064\u3044\u3066\u7406\u89e3\u3057\u3066\u304a\u304f\u3068\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u7ba1\u7406\u3084\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u3067\u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u4fdd\u8b77\u306b\u3082\u5f79\u7acb\u3061\u307e\u3059\u3002.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 IPv4\u30a2\u30c9\u30ec\u30b9\u3068\u306f\u4f55\u304b\uff1f<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"highlight\">\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb\u30cf\u30a6\u30b8\u30f3\u30b0<\/span> <strong>IPv4\u30a2\u30c9\u30ec\u30b9<\/strong> \u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30fb\u30d7\u30ed\u30c8\u30b3\u30eb\uff08IP\uff09\u3092\u7528\u3044\u3066\u901a\u4fe1\u3092\u884c\u3046\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u53c2\u52a0\u3059\u308b\u5404\u30c7\u30d0\u30a4\u30b9\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u308b32\u30d3\u30c3\u30c8\u306e\u6570\u5024\u30e9\u30d9\u30eb\u3067\u3059\u3002\u305d\u306e\u4e3b\u306a\u6a5f\u80fd\u306f2\u3064\u3042\u308a\u307e\u3059\uff1a <strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30fb\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u306e\u8b58\u5225<\/strong> \u304a\u3088\u3073 <strong>\u4f4d\u7f6e\u60c5\u5831\u306b\u57fa\u3065\u304f\u30a2\u30c9\u30ec\u30c3\u30b7\u30f3\u30b0\uff08\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u30fb\u30a2\u30c9\u30ec\u30c3\u30b7\u30f3\u30b0\uff09<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306f\u3001\u3042\u306a\u305f\u306e\u81ea\u5b85\u306e\u4f4f\u6240\u306e\u30c7\u30b8\u30bf\u30eb\u7248\u3060\u3068\u8003\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u90f5\u4fbf\u7269\u304c\u6b63\u78ba\u306a\u4f4f\u6240\u3092\u5fc5\u8981\u3068\u3059\u308b\u3088\u3046\u306b\u3001\u30c7\u30fc\u30bf\u30fb\u30d1\u30b1\u30c3\u30c8\u3082\u5b9b\u5148 <strong>IPv4\u30a2\u30c9\u30ec\u30b9<\/strong> \u3092\u5fc5\u8981\u3068\u3057\u3001\u305d\u308c\u306b\u3088\u3063\u3066\u3042\u306a\u305f\u306e\u30c7\u30d0\u30a4\u30b9\u307e\u3067\u5c4a\u304f\u306e\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u3082\u4e00\u822c\u7684\u306a <strong>IPv4\u30a2\u30c9\u30ec\u30b9<\/strong> \u306e\u8868\u8a18\u5f62\u5f0f\u306f\u300c\u30c9\u30c3\u30c8\u533a\u5207\u308a10\u9032\u8868\u8a18\u300d\u3067\u3001\u30d4\u30ea\u30aa\u30c9\u3067\u533a\u5207\u3089\u308c\u305f4\u3064\u306e\u30aa\u30af\u30c6\u30c3\u30c8\uff088\u30d3\u30c3\u30c8\u5358\u4f4d\uff09\u304b\u3089\u69cb\u6210\u3055\u308c\u307e\u3059\u3002\u4f8b\uff1a <mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\"> 192.168.1.1 <\/mark>. \u3002\u5404\u30aa\u30af\u30c6\u30c3\u30c8\u306f0\uff5e255\u306e\u7bc4\u56f2\u3092\u53d6\u308a\u3001\u7406\u8ad6\u4e0a\u306e\u6700\u5927\u30a2\u30c9\u30ec\u30b9\u6570\u306f\u7d0443\u5104\u500b\u3068\u306a\u308a\u307e\u3059\u2014\u2014\u3057\u304b\u3057\u3001\u73fe\u4ee3\u306e\u4e16\u754c\u3067\u306f\u3053\u306e\u6570\u3067\u306f\u5230\u5e95\u4e0d\u8db3\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u660e\u3089\u304b\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 IPv4\u30a2\u30c9\u30ec\u30b9\u306e\u69cb\u9020\uff1a\u30af\u30e9\u30b9\u3068\u30b5\u30d6\u30cd\u30c3\u30c8\u5316<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3092\u6574\u7406\u3059\u308b\u305f\u3081\u306b\u3001 <strong>IPv4\u30a2\u30c9\u30ec\u30b9\u7a7a\u9593<\/strong>, \u306f\u5f53\u521d\u3001\u30af\u30e9\u30b9\u306b\u5206\u5272\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u306e\u5206\u985e\u306b\u3088\u308a\u3001\u7570\u306a\u308b\u30b5\u30a4\u30ba\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5411\u3051\u306e <strong>IP\u30a2\u30c9\u30ec\u30b9<\/strong> \u306e\u5272\u308a\u5f53\u3066\u3092\u7ba1\u7406\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3057\u305f\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u306e\u8868\u306f\u3001\u5143\u306e\u30af\u30e9\u30b9\u30d5\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u5206\u89e3\u3057\u305f\u3082\u306e\u3067\u3059\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u30af\u30e9\u30b9<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u5148\u982d\u30d3\u30c3\u30c8<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u30a2\u30c9\u30ec\u30b9\u7bc4\u56f2<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u76ee\u7684<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30af\u30e9\u30b9A<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\">0<\/mark><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0.0.0\uff5e126.255.255.255<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u975e\u5e38\u306b\u5927\u898f\u6a21\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5411\u3051\uff08\u4f8b\uff1a\u5927\u624b\u4f01\u696d\uff09\u3002.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30af\u30e9\u30b9B<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\">10<\/mark><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0.0.0\uff5e191.255.255.255<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4e2d\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5411\u3051\uff08\u4f8b\uff1a\u5927\u5b66\uff09\u3002.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30af\u30e9\u30b9C<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\">110<\/mark><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0.0.0\uff5e223.255.255.255<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u5c0f\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5411\u3051\uff08\u4f8b\uff1a\u4e2d\u5c0f\u4f01\u696d\uff09\u3002.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30af\u30e9\u30b9D<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\">1110<\/mark><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0.0.0\uff5e239.255.255.255<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30de\u30eb\u30c1\u30ad\u30e3\u30b9\u30c8\u30b0\u30eb\u30fc\u30d7\u7528\u306b\u4e88\u7d04\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30af\u30e9\u30b9E<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\">1111<\/mark><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>0.0.0\uff5e255.255.255.255<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u5b9f\u9a13\u7684\u5229\u7528\u306e\u305f\u3081\u306b\u4e88\u7d04\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3057\u304b\u3057\u3001\u30af\u30e9\u30b9\u30d5\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u306f\u975e\u52b9\u7387\u3067\u3042\u308a\u3001\u6025\u901f\u306a <strong>IPv4\u30a2\u30c9\u30ec\u30b9\u67af\u6e07<\/strong>. \u3092\u62db\u304d\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u308a\u3001 <strong>\u30af\u30e9\u30b9\u30ec\u30b9\u30a4\u30f3\u30bf\u30fc\u30c9\u30e1\u30a4\u30f3\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\uff08CIDR\uff09<\/strong>, \u304c\u767b\u5834\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u3001 <strong>\u30b5\u30d6\u30cd\u30c3\u30c8\u5316<\/strong>. <strong>\u30b5\u30d6\u30cd\u30c3\u30c8\u5316<\/strong> \u306f\u3001IPv4\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092 <strong>\u6700\u9069\u5316\u3057\u3001IP\u30a2\u30c9\u30ec\u30b9\u306e\u5272\u308a\u5f53\u3066\u3092\u52b9\u7387\u7684\u306b\u7ba1\u7406\u3057\u3088\u3046\u3068\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u8005\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u306a\u30b9\u30ad\u30eb\u3067\u3059\u3002<\/strong> \u3067\u3059\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"546\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b336f984fef44c35833b22633ee2818e.webp\" alt=\"IPv4 Address\" class=\"wp-image-4689\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b336f984fef44c35833b22633ee2818e.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b336f984fef44c35833b22633ee2818e-300x137.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b336f984fef44c35833b22633ee2818e-1024x466.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b336f984fef44c35833b22633ee2818e-768x349.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b336f984fef44c35833b22633ee2818e-18x8.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 IPv4 vs. IPv6\uff1a\u4e26\u5217\u6bd4\u8f03<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u3067\u6700\u3082\u8a71\u984c\u306b\u306a\u3063\u3066\u3044\u308b\u30c8\u30d4\u30c3\u30af\u306f\u3001 <strong>IPv4\u304b\u3089IPv6\u3078\u306e\u79fb\u884c<\/strong>. \u3067\u3059\u3002\u3067\u306f\u3001\u4e21\u8005\u306e\u9055\u3044\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f\u4ee5\u4e0b\u306e\u8868\u306f\u3001\u60c5\u5831\u306b\u57fa\u3065\u3044\u305f <strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u9078\u5b9a<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u6a5f\u80fd<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>IPv4<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/ja\/knowledge-center\/understanding-ipv6-address-structure-benefits-and-transition\/\"><strong>IPv6<\/strong><\/a><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30a2\u30c9\u30ec\u30b9\u9577<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>32-bit<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>128-bit<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30a2\u30c9\u30ec\u30b9\u5f62\u5f0f<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u30c9\u30c3\u30c8\u533a\u5207\u308a10\u9032\u6570\uff08\u4f8b\uff1a192.168.1.1\uff09<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>16\u9032\u6570\uff08\u4f8b\uff1a2001:0db8:85a3:0000:0000:8a2e:0370:7334\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30a2\u30c9\u30ec\u30b9\u6570<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u7d0443\u5104\u500b<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4e8b\u5b9f\u4e0a\u7121\u9650\uff083.4\u00d710\u00b3\u2078\u500b\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u69cb\u6210<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u624b\u52d5\u307e\u305f\u306fDHCP<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u81ea\u52d5\u8a2d\u5b9a\uff08\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\uff09<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>IPSec\u306f\u30aa\u30d7\u30b7\u30e7\u30f3<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>IPSec\u304c\u7d71\u5408\u6e08\u307f<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u30d8\u30c3\u30c0\u30fc\u306e\u8907\u96d1\u3055<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u8907\u96d1\u3067\u53ef\u5909\u9577<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u3088\u308a\u30b7\u30f3\u30d7\u30eb\u3067\u56fa\u5b9a\u9577<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">IPv6\u306f\u5e83\u5927\u306a\u30a2\u30c9\u30ec\u30b9\u7a7a\u9593\u3068\u6700\u65b0\u306e\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u4e16\u754c\u7684\u306a\u79fb\u884c\u306f\u9045\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001\u5f53\u9762\u306e\u9593\u3001\u307b\u3068\u3093\u3069\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306fIPv4\u3068IPv6\u306e\u4e21\u65b9\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30c7\u30e5\u30a2\u30eb\u30b9\u30bf\u30c3\u30af\u74b0\u5883\u3067\u904b\u7528\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001 <strong>IPv4\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068IPv6\u3092\u4f75\u7528\u3057\u305f\u8a2d\u5b9a\u304a\u3088\u3073\u7ba1\u7406\u65b9\u6cd5<\/strong> \u3092\u77e5\u308b\u3053\u3068\u306f\u6975\u3081\u3066\u91cd\u8981\u306a\u30b9\u30ad\u30eb\u3067\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 \u7269\u7406\u5c64\uff1aIPv4\u304c\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u51fa\u4f1a\u3046\u5834\u6240<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IP\u30a2\u30c9\u30ec\u30b9\u306f\u3001 <strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\uff08OSI\u30e2\u30c7\u30eb\u306e\u7b2c3\u5c64\uff09\u3067\u52d5\u4f5c\u3057\u307e\u3059\u304c\u3001<\/strong> \u30c7\u30fc\u30bf\u306e\u9001\u4fe1\u306b\u306f\u7269\u7406\u7684\u306a\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u767b\u5834\u3059\u308b\u306e\u304c\u3001 <strong>\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30e9\u30a4\u30f3\u30ca\u30c3\u30d7\u3092<\/strong> \u3067\u3059\u3002 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb<\/strong><\/a>, \u3001\u3059\u306a\u308f\u3061\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u30a4\u30c3\u30c1\u3001\u30eb\u30fc\u30bf\u30fc\u3001\u304a\u3088\u3073\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30ab\u30fc\u30c9\u306b\u304a\u3044\u3066\u4e0d\u53ef\u6b20\u306a\u69cb\u6210\u8981\u7d20\u3067\u3042\u308a\u3001\u96fb\u6c17\u4fe1\u53f7\u3092\u5149\u30d1\u30eb\u30b9\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u3067\u3001\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u4e0a\u3067\u306e\u9ad8\u901f\u30c7\u30fc\u30bf\u4f1d\u9001\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/ja\/knowledge-center\/fiber-optic-cable-what-it-is-and-how-it-works-explained\/\"><strong>\u5149\u30d5\u30a1\u30a4\u30d0\u30b1\u30fc\u30d6\u30eb<\/strong><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u306f\u3001\u3053\u308c\u306f\u3042\u306a\u305f\u306e <strong>IPv4\u30a2\u30c9\u30ec\u30b9<\/strong>\u3068\u3069\u306e\u3088\u3046\u306b\u95a2\u9023\u3059\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f IP\u30a2\u30c9\u30ec\u30b9\u304c <mark data-color=\"#EAEAEA\" style=\"background-color: rgb(234, 234, 234); color: inherit;\">192.168.1.10<\/mark>, \u306e\u3088\u3046\u306a\u30c7\u30d0\u30a4\u30b9\u304b\u3089\u30c7\u30fc\u30bf\u30d1\u30b1\u30c3\u30c8\u3092\u9001\u4fe1\u3059\u308b\u3068\u3001\u305d\u306e\u30d1\u30b1\u30c3\u30c8\u306f\u30ed\u30fc\u30ab\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3092\u901a\u904e\u3057\u307e\u3059\u3002\u3082\u3057\u5f53\u8a72\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u7570\u306a\u308b\u5efa\u7269\u3084\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u306b\u307e\u305f\u304c\u3063\u3066\u3044\u308b\u5834\u5408\u3001\u304a\u305d\u3089\u304f\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002 <strong>\u5149\u5b66\u30e2\u30b8\u30e5\u30fc\u30eb<\/strong> \u30b9\u30a4\u30c3\u30c1\u5185\u306e <strong>IPv4\u30a2\u30c9\u30ec\u30b9<\/strong>\u2014\u3092\u542b\u3080\u30d5\u30ec\u30fc\u30e0\u5316\u3055\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u3092\u5149\u30d3\u30fc\u30e0\u306b\u5909\u63db\u3057\u3001\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u3092\u901a\u3058\u3066\u9001\u4fe1\u3059\u308b\u5f79\u5272\u3092\u62c5\u3044\u307e\u3059\u3002\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u54c1\u8cea\u304a\u3088\u3073\u6027\u80fd\u306f\u3001IPv4\u306b\u57fa\u3065\u304f\u901a\u4fe1\u306e\u901f\u5ea6\u3001\u4fe1\u983c\u6027\u3001\u304a\u3088\u3073\u9045\u5ef6\u306b\u76f4\u63a5\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5805\u7262\u3067\u9ad8\u6027\u80fd\u306a\u63a5\u7d9a\u3092\u5fc5\u8981\u3068\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u9069\u5207\u306a\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002\u3053\u3053\u3067\u6d3b\u8e8d\u3059\u308b\u306e\u304c\u3001 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a> \u3068\u3044\u3063\u305f\u5c02\u9580\u30d6\u30e9\u30f3\u30c9\u3067\u3059\u3002\u540c\u793e\u306e <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>\u30aa\u30d7\u30c6\u30a3\u30ab\u30eb\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc<\/strong><\/a> \u306f\u3001\u6700\u5927\u9650\u306e\u4e92\u63db\u6027\u3068\u52b9\u7387\u6027\u3092\u5b9f\u73fe\u3059\u308b\u3088\u3046\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u4e00\u4f8b\u304c <strong>LINK-PP <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/buy-ls-mm8510-s3c.htm\"><strong>SFP-10G-SR<\/strong><\/a> \u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u3059\u3002\u3053\u306e\u7279\u5b9a\u306e\u30e2\u30c7\u30eb\u306f\u3001 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/ja\/knowledge-center\/om1-om2-om3-om4-om5-multimode-fiber-guide\/\"><strong>\u30de\u30eb\u30c1\u30e2\u30fc\u30c9\u30d5\u30a1\u30a4\u30d0<\/strong><\/a>, \u4e0a\u3067\u306e10\u30ae\u30ac\u30d3\u30c3\u30c8\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001 <strong>IPv4\u30d7\u30ed\u30c8\u30b3\u30eb<\/strong>. \u3092\u6d3b\u7528\u3057\u305f\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u63a5\u7d9a\u306e\u5f37\u5316\u306b\u6700\u9069\u306a\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002IPv4\u30d1\u30b1\u30c3\u30c8\u306e\u4f1d\u9001\u3092\u53ef\u80fd\u306a\u9650\u308a\u9ad8\u901f\u304b\u3064\u4fe1\u983c\u6027\u9ad8\u304f\u4fdd\u3061\u3001\u8ad6\u7406\u7684\u306a\u30a2\u30c9\u30ec\u30c3\u30b7\u30f3\u30b0\u65b9\u5f0f\u3068\u7269\u7406\u7684\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u9593\u3092\u30b7\u30fc\u30e0\u30ec\u30b9\u306b\u7d50\u3076\u30d6\u30ea\u30c3\u30b8\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 \u7d50\u8ad6\uff1aIPv4\u306e\u9577\u304d\u306b\u308f\u305f\u308b\u907a\u7523<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e <strong>IPv4\u30a2\u30c9\u30ec\u30b9<\/strong> \u306f\u3001\u307e\u3063\u305f\u304f\u6642\u4ee3\u9045\u308c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002IPv4\u306f\u4f9d\u7136\u3068\u3057\u3066\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u57fa\u76e4\u3068\u306a\u308b\u67f1\u3067\u3042\u308a\u3001IT\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u306b\u95a2\u308f\u308b\u3059\u3079\u3066\u306e\u4eba\u306b\u3068\u3063\u3066\u3001\u305d\u306e\u539f\u7406\u3092\u6df1\u304f\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u975e\u5e38\u306b\u4fa1\u5024\u304c\u3042\u308a\u307e\u3059\u3002\u69cb\u9020\u5316\u3055\u308c\u305f\u30af\u30e9\u30b9\u30b7\u30b9\u30c6\u30e0\u304b\u3089IPv6\u3068\u306e\u5171\u5b58\u3001\u305d\u3057\u3066 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>LINK-PP\u5149\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3001<\/strong><\/a>, \u306e\u3088\u3046\u306a\u9ad8\u6027\u80fd\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3078\u306e\u4f9d\u5b58\u306b\u81f3\u308b\u307e\u3067\u3001IPv4\u306f\u4eca\u306a\u304a\u95a2\u9023\u6027\u304c\u9ad8\u304f\u3001\u6975\u3081\u3066\u91cd\u8981\u306a\u30c8\u30d4\u30c3\u30af\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8a2d\u8a08\u307e\u305f\u306f\u7ba1\u7406\u3092\u884c\u3046\u969b\u306b\u306f\u3001\u5805\u56fa\u306a\u8ad6\u7406\u7684\u57fa\u76e4\uff08IP\u30a2\u30c9\u30ec\u30c3\u30b7\u30f3\u30b0\uff09\u3092\u3001\u9811\u5065\u306a\u7269\u7406\u7684\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u652f\u3048\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u3092\u5fd8\u308c\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcd1 \u3088\u304f\u3042\u308b\u8cea\u554f\uff08FAQ\uff09<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >\u30d1\u30d6\u30ea\u30c3\u30afIPv4\u30a2\u30c9\u30ec\u30b9\u3068\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IPv4\u30a2\u30c9\u30ec\u30b9\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30d6\u30ea\u30c3\u30afIPv4\u30a2\u30c9\u30ec\u30b9\u306f\u3001\u30c7\u30d0\u30a4\u30b9\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u63a5\u7d9a\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IPv4\u30a2\u30c9\u30ec\u30b9\u306f\u3001\u5bb6\u5ead\u3084\u30aa\u30d5\u30a3\u30b9\u5185\u306e\u30ed\u30fc\u30ab\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u306e\u307f\u6a5f\u80fd\u3057\u307e\u3059\u3002\u30d7\u30ea\u30f3\u30bf\u30fc\u3084\u30ce\u30fc\u30c8\u30d1\u30bd\u30b3\u30f3\u306a\u3069\u306e\u30ed\u30fc\u30ab\u30eb\u30c7\u30d0\u30a4\u30b9\u306b\u306f\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u30672\u3064\u306e\u30c7\u30d0\u30a4\u30b9\u304c\u540c\u3058IPv4\u30a2\u30c9\u30ec\u30b9\u3092\u6301\u3064\u3068\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u30672\u3064\u306e\u30c7\u30d0\u30a4\u30b9\u304c\u540c\u4e00\u306eIPv4\u30a2\u30c9\u30ec\u30b9\u3092\u5171\u6709\u3059\u308b\u3068\u3001\u63a5\u7d9a\u969c\u5bb3\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u30c7\u30fc\u30bf\u304c\u6b63\u3057\u3044\u30c7\u30d0\u30a4\u30b9\u306b\u5c4a\u304b\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u554f\u984c\u306f\u3001\u5404\u30c7\u30d0\u30a4\u30b9\u306b\u4e00\u610f\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u3067\u89e3\u6c7a\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >IPv4\u306b\u304a\u3051\u308bNAT\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">NAT\u306f\u300cNetwork Address Translation\uff08\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\u5909\u63db\uff09\u300d\u306e\u7565\u3067\u3059\u3002NAT\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u591a\u6570\u306e\u30c7\u30d0\u30a4\u30b9\u304c1\u3064\u306e\u30d1\u30d6\u30ea\u30c3\u30afIPv4\u30a2\u30c9\u30ec\u30b9\u3092\u5171\u6709\u3067\u304d\u307e\u3059\u3002NAT\u306f\u30a2\u30c9\u30ec\u30b9\u306e\u7bc0\u7d04\u306b\u5f79\u7acb\u3061\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u8ffd\u52a0\u30ec\u30a4\u30e4\u30fc\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u300cIPv4\u30a2\u30c9\u30ec\u30b9\u67af\u6e07\u300d\u3068\u306f\u4f55\u3092\u610f\u5473\u3057\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">IPv4\u30a2\u30c9\u30ec\u30b9\u67af\u6e07\u3068\u306f\u3001\u3042\u3089\u3086\u308b\u30c7\u30d0\u30a4\u30b9\u306b\u5272\u308a\u5f53\u3066\u308b\u305f\u3081\u306e\u5341\u5206\u306a\u30e6\u30cb\u30fc\u30af\u306a\u30a2\u30c9\u30ec\u30b9\u304c\u5b58\u5728\u3057\u306a\u3044\u72b6\u614b\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u4e16\u754c\u306b\u306fIPv4\u304c\u5bfe\u5fdc\u53ef\u80fd\u306a\u6570\u3088\u308a\u3082\u591a\u304f\u306e\u30c7\u30d0\u30a4\u30b9\u304c\u5b58\u5728\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u3088\u308a\u591a\u304f\u306e\u4eba\u3005\u3084\u30ac\u30b8\u30a7\u30c3\u30c8\u304c\u30aa\u30f3\u30e9\u30a4\u30f3\u306b\u306a\u308b\u306b\u3064\u308c\u3066\u9855\u5728\u5316\u3059\u308b\u554f\u984c\u3067\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >IPv4\u30a2\u30c9\u30ec\u30b9\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u308b\u30c4\u30fc\u30eb\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Windows\u3067\u306f\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3001Mac\u3067\u306f\u30b7\u30b9\u30c6\u30e0\u8a2d\u5b9a\u306a\u3069\u3001OS\u306b\u6a19\u6e96\u642d\u8f09\u3055\u308c\u3066\u3044\u308b\u30c4\u30fc\u30eb\u3092\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u591a\u304f\u306eWeb\u30b5\u30a4\u30c8\u3067\u3082\u30d1\u30d6\u30ea\u30c3\u30afIPv4\u30a2\u30c9\u30ec\u30b9\u3092\u8868\u793a\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30c4\u30fc\u30eb\u3092\u4f7f\u3048\u3070\u3001\u81ea\u5206\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u7d20\u65e9\u304f\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>IPv4\u30a2\u30c9\u30ec\u30b9\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u30c7\u30d0\u30a4\u30b9\u3092\u4e00\u610f\u306b\u8b58\u5225\u3057\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304a\u3088\u3073\u4e16\u754c\u4e2d\u306e\u30c7\u30d0\u30a4\u30b9\u9593\u3067\u306e\u5b89\u5168\u306a\u30c7\u30fc\u30bf\u8ee2\u9001\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002.<\/p>","protected":false},"author":1,"featured_media":4688,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[13,14,18,24,26],"class_list":["post-4690","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-100g-modules","tag-10g-sfp-transceivers","tag-40g-qsfp-transceivers","tag-link-pp","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/posts\/4690","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/comments?post=4690"}],"version-history":[{"count":5,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/posts\/4690\/revisions"}],"predecessor-version":[{"id":11008,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/posts\/4690\/revisions\/11008"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/media\/4688"}],"wp:attachment":[{"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/media?parent=4690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/categories?post=4690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/tags?post=4690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}