{"id":3448,"date":"2026-09-25T14:18:43","date_gmt":"2026-09-25T05:18:43","guid":{"rendered":"https:\/\/qol-kk.com\/wp2\/?p=3448"},"modified":"2026-09-25T14:18:43","modified_gmt":"2026-09-25T05:18:43","slug":"20260924-plan039","status":"publish","type":"post","link":"https:\/\/qol-kk.com\/wp2\/blog\/2026\/09\/25\/20260924-plan039\/","title":{"rendered":"\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7 vs \u30cd\u30c3\u30c8\u30ef\u30fc\u30afACL\uff1aAWS\u306e2\u3064\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u4f7f\u3044\u5206\u3051\u308b"},"content":{"rendered":"<h2>\u6982\u8981<\/h2>\n<p>AWS\u306eVPC\u306b\u306f\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u5236\u5fa1\u3059\u308b\u4ed5\u7d44\u307f\u304c2\u7a2e\u985e\u3042\u308a\u307e\u3059\u3002<strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\uff08Security Group, SG\uff09<\/strong> \u3068 <strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30afACL\uff08Network ACL, NACL\uff09<\/strong> \u3067\u3059\u3002\u3069\u3061\u3089\u3082\u300c\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u300d\u3068\u8aac\u660e\u3055\u308c\u308b\u305f\u3081\u3001\u521d\u3081\u3066\u89e6\u308c\u308b\u3068\u300c\u3069\u3061\u3089\u3092\u4f7f\u3048\u3070\u3044\u3044\u306e\u304b\u300d\u300c\u4e21\u65b9\u5fc5\u8981\u306a\u306e\u304b\u300d\u3067\u5fc5\u305a\u8ff7\u3044\u307e\u3059\u3002<\/p>\n<p>\u7d50\u8ad6\u304b\u3089\u8a00\u3046\u3068\u3001\u4e21\u8005\u306f<strong>\u9069\u7528\u3055\u308c\u308b\u5c64\u30fb\u52d5\u4f5c\u30e2\u30c7\u30eb\u30fb\u30eb\u30fc\u30eb\u306e\u8868\u73fe\u529b\u304c\u3059\u3079\u3066\u7570\u306a\u308a\u307e\u3059<\/strong>\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u4e21\u8005\u306e\u9055\u3044\u3092\u6574\u7406\u3057\u3001\u5b9f\u52d9\u3067\u3069\u3046\u4f7f\u3044\u5206\u3051\u308b\u304b\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h2>\u524d\u63d0\u74b0\u5883<\/h2>\n<ul>\n<li>Amazon VPC\uff08\u30c7\u30d5\u30a9\u30eb\u30c8VPC\u304a\u3088\u3073\u30ab\u30b9\u30bf\u30e0VPC\u306e\u53cc\u65b9\uff09<\/li>\n<li>\u5bfe\u8c61: EC2\u3001RDS\u3001ALB \u306a\u3069 ENI\uff08Elastic Network Interface\uff09\u3092\u6301\u3064\u30ea\u30bd\u30fc\u30b9\u5168\u822c<\/li>\n<\/ul>\n<h2>\u767a\u751f\u3057\u304c\u3061\u306a\u554f\u984c<\/h2>\n<p>\u30a4\u30f3\u30d5\u30e9\u69cb\u7bc9\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6df7\u4e71\u304c\u3088\u304f\u8d77\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\u3067\u8a31\u53ef\u3057\u305f\u306e\u306b\u901a\u4fe1\u3067\u304d\u306a\u3044\uff08\u5b9f\u306fNACL\u3067\u623b\u308a\u304c\u5f3e\u304b\u308c\u3066\u3044\u308b\uff09<\/li>\n<li>NACL\u3067\u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\u3092\u8a31\u53ef\u3057\u305f\u306e\u306b\u5fdc\u7b54\u304c\u8fd4\u3089\u306a\u3044\uff08\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\u306e\u843d\u3068\u3057\u7a74\uff09<\/li>\n<li>\u300c\u62d2\u5426\u30eb\u30fc\u30eb\u3092\u66f8\u304d\u305f\u3044\u300d\u306e\u306bSG\u306b\u62d2\u5426\u304c\u66f8\u3051\u306a\u304f\u3066\u56f0\u308b<\/li>\n<li>\u3069\u3061\u3089\u306e\u5c64\u3067\u5236\u5fa1\u3059\u3079\u304d\u304b\u8a2d\u8a08\u65b9\u91dd\u304c\u5b9a\u307e\u3089\u306a\u3044<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306f\u3059\u3079\u3066\u3001<strong>2\u3064\u306e\u4ed5\u7d44\u307f\u306e\u52d5\u4f5c\u30e2\u30c7\u30eb\u306e\u9055\u3044\u3092\u7406\u89e3\u3057\u3066\u3044\u306a\u3044<\/strong>\u3053\u3068\u306b\u8d77\u56e0\u3057\u307e\u3059\u3002<\/p>\n<h2>\u4e21\u8005\u306e\u672c\u8cea\u7684\u306a\u9055\u3044<\/h2>\n<h3>1. \u9069\u7528\u3055\u308c\u308b\u5c64\u304c\u9055\u3046<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u89b3\u70b9<\/th>\n<th>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7<\/th>\n<th>\u30cd\u30c3\u30c8\u30ef\u30fc\u30afACL<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u9069\u7528\u5358\u4f4d<\/td>\n<td>ENI\uff08\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\uff09\u5358\u4f4d<\/td>\n<td>\u30b5\u30d6\u30cd\u30c3\u30c8\u5358\u4f4d<\/td>\n<\/tr>\n<tr>\n<td>\u9069\u7528\u7bc4\u56f2<\/td>\n<td>\u7d10\u3065\u3051\u305f\u30ea\u30bd\u30fc\u30b9\u306b\u306e\u307f\u4f5c\u7528<\/td>\n<td>\u30b5\u30d6\u30cd\u30c3\u30c8\u5185\u306e\u5168\u30ea\u30bd\u30fc\u30b9\u306b\u4e00\u5f8b\u4f5c\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\u306f\u300c\u305d\u306e\u30ea\u30bd\u30fc\u30b9\u306e\u76f4\u524d\u300d\u306b\u7acb\u3064\u9580\u756a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30afACL\u306f\u300c\u30b5\u30d6\u30cd\u30c3\u30c8\u306e\u5165\u53e3\u300d\u306b\u7acb\u3064\u9580\u756a\u3001\u3068\u30a4\u30e1\u30fc\u30b8\u3059\u308b\u3068\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<h3>2. \u30b9\u30c6\u30fc\u30c8\u30d5\u30eb vs \u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\uff08\u6700\u91cd\u8981\uff09<\/h3>\n<p>\u3053\u308c\u304c\u6700\u5927\u306e\u9055\u3044\u3067\u3042\u308a\u3001\u6700\u3082\u30cf\u30de\u308b\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7 = \u30b9\u30c6\u30fc\u30c8\u30d5\u30eb<\/strong><\/li>\n<\/ul>\n<p>\u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\u3067\u8a31\u53ef\u3057\u305f\u901a\u4fe1\u306e<strong>\u623b\u308a\uff08\u30ec\u30b9\u30dd\u30f3\u30b9\uff09\u306f\u81ea\u52d5\u7684\u306b\u8a31\u53ef\u3055\u308c\u307e\u3059<\/strong>\u3002\u623b\u308a\u306e\u30eb\u30fc\u30eb\u3092\u66f8\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<ul>\n<li><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30afACL = \u30b9\u30c6\u30fc\u30c8\u30ec\u30b9<\/strong><\/li>\n<\/ul>\n<p>\u884c\u304d\u3068\u623b\u308a\u3092<strong>\u5225\u3005\u306b\u8a55\u4fa1\u3057\u307e\u3059<\/strong>\u3002\u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\u3092\u8a31\u53ef\u3057\u3066\u3082\u3001\u30a2\u30a6\u30c8\u30d0\u30a6\u30f3\u30c9\uff08\u623b\u308a\uff09\u3092\u8a31\u53ef\u3057\u306a\u3051\u308c\u3070\u5fdc\u7b54\u304c\u8fd4\u308a\u307e\u305b\u3093\u3002<\/p>\n<h3>3. \u8a31\u53ef\u30eb\u30fc\u30eb \/ \u62d2\u5426\u30eb\u30fc\u30eb<\/h3>\n<ul>\n<li><strong>SG<\/strong>: <strong>\u8a31\u53ef\uff08allow\uff09\u30eb\u30fc\u30eb\u306e\u307f<\/strong>\u3002\u66f8\u3044\u3066\u3044\u306a\u3044\u3082\u306e\u306f\u6697\u9ed9\u62d2\u5426\u3067\u3059\u3002\u300c\u7279\u5b9aIP\u3060\u3051\u62d2\u5426\u300d\u306fSG\u3067\u306f\u66f8\u3051\u307e\u305b\u3093\u3002<\/li>\n<li><strong>NACL<\/strong>: <strong>\u8a31\u53ef\u30fb\u62d2\u5426\u306e\u4e21\u65b9<\/strong>\u3092\u66f8\u3051\u307e\u3059\u3002\u7279\u5b9aIP\u3092\u30d6\u30ed\u30c3\u30af\u3057\u305f\u3044\u5834\u5408\u306fNACL\u306e\u51fa\u756a\u3067\u3059\u3002<\/li>\n<\/ul>\n<h3>4. \u30eb\u30fc\u30eb\u306e\u8a55\u4fa1\u9806\u5e8f<\/h3>\n<ul>\n<li><strong>SG<\/strong>: \u3059\u3079\u3066\u306e\u30eb\u30fc\u30eb\u3092\u8a55\u4fa1\u3057\u3001\u3044\u305a\u308c\u304b1\u3064\u3067\u3082\u30de\u30c3\u30c1\u3059\u308c\u3070\u8a31\u53ef\u3002\u9806\u5e8f\u306e\u6982\u5ff5\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<li><strong>NACL<\/strong>: <strong>\u30eb\u30fc\u30eb\u756a\u53f7\u306e\u5c0f\u3055\u3044\u9806<\/strong>\u306b\u8a55\u4fa1\u3057\u3001<strong>\u6700\u521d\u306b\u30de\u30c3\u30c1\u3057\u305f\u30eb\u30fc\u30eb\u3067\u78ba\u5b9a<\/strong>\u3057\u307e\u3059\uff08\u4ee5\u964d\u306f\u898b\u307e\u305b\u3093\uff09\u3002\u9806\u5e8f\u304c\u6319\u52d5\u3092\u5de6\u53f3\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u5b9f\u52d9\u3067\u306e\u4f7f\u3044\u5206\u3051<\/h2>\n<h3>\u57fa\u672c\u65b9\u91dd\uff1a\u4e3b\u5f79\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7<\/h3>\n<p>\u5b9f\u52d9\u3067\u306f<strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\u3092\u4e3b\u305f\u308b\u5236\u5fa1\u624b\u6bb5<\/strong>\u3068\u3057\u3001NACL\u306f\u88dc\u52a9\u7684\u306b\u4f7f\u3046\u306e\u304c\u5b9a\u77f3\u3067\u3059\u3002\u7406\u7531\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u30b9\u30c6\u30fc\u30c8\u30d5\u30eb\u306a\u306e\u3067\u8a2d\u5b9a\u304c\u76f4\u611f\u7684\u3067\u30df\u30b9\u304c\u8d77\u304d\u306b\u304f\u3044<\/li>\n<li>ENI\u5358\u4f4d\u306a\u306e\u3067\u300c\u3053\u306e\u30ea\u30bd\u30fc\u30b9\u3060\u3051\u300d\u306e\u5236\u5fa1\u304c\u6b63\u78ba\u306b\u3067\u304d\u308b<\/li>\n<li>SG\u540c\u58eb\u3092\u53c2\u7167\uff08SG\u3092\u30bd\u30fc\u30b9\u306b\u6307\u5b9a\uff09\u3067\u304d\u308b\u305f\u3081\u3001IP\u3092\u56fa\u5b9a\u3057\u306a\u3044\u52d5\u7684\u306a\u69cb\u6210\u306b\u5f37\u3044<\/li>\n<\/ul>\n<h3>NACL\u3092\u4f7f\u3046\u5834\u9762<\/h3>\n<p>NACL\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u300c\u30b5\u30d6\u30cd\u30c3\u30c8\u5168\u4f53\u306b\u52b9\u304b\u305b\u305f\u3044\u300d\u300c\u660e\u793a\u7684\u306b\u62d2\u5426\u3057\u305f\u3044\u300d\u30b1\u30fc\u30b9\u3067\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u7279\u5b9a\u306eIP\u30a2\u30c9\u30ec\u30b9\uff08\u30ec\u30f3\u30b8\uff09\u3092\u30b5\u30d6\u30cd\u30c3\u30c8\u5168\u4f53\u304b\u3089\u30d6\u30ed\u30c3\u30af\u3057\u305f\u3044<\/li>\n<li>\u30b5\u30d6\u30cd\u30c3\u30c8\u5358\u4f4d\u3067\u6700\u4f4e\u9650\u306e\u30ac\u30fc\u30c9\u30ec\u30fc\u30eb\u3092\u6577\u304d\u305f\u3044\uff08\u591a\u5c64\u9632\u5fa1\uff09<\/li>\n<li>\u8aa4\u8a2d\u5b9a\u3055\u308c\u305fSG\u306e\u4fdd\u967a\u3068\u3057\u3066\u3001\u7c97\u3044\u7db2\u3092\u304b\u3051\u3066\u304a\u304d\u305f\u3044<\/li>\n<\/ul>\n<h2>\u5b9f\u88c5\u4f8b<\/h2>\n<h3>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\uff08\u30b9\u30c6\u30fc\u30c8\u30d5\u30eb\u306a\u306e\u3067\u623b\u308a\u4e0d\u8981\uff09<\/h3>\n<p>Web\u30b5\u30fc\u30d0\u7528SG\u300280\/443\u3092\u5168\u4e16\u754c\u304b\u3089\u3001SSH\u306f\u7ba1\u7406\u7528IP\u306e\u307f\u8a31\u53ef\u3059\u308b\u4f8b\u3067\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\"># \u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\nType    Protocol  Port   Source\nHTTP    TCP       80     0.0.0.0\/0\nHTTPS   TCP       443    0.0.0.0\/0\nSSH     TCP       22     203.0.113.10\/32   # \u7ba1\u7406\u7528IP\u306e\u307f\n\n# \u30a2\u30a6\u30c8\u30d0\u30a6\u30f3\u30c9\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u5168\u8a31\u53ef\u306e\u307e\u307e\u3002\u623b\u308a\u306f\u81ea\u52d5\u8a31\u53ef\u3055\u308c\u308b\u305f\u3081\u500b\u5225\u6307\u5b9a\u4e0d\u8981\uff09\nAll     All       All    0.0.0.0\/0<\/pre>\n<p>RDS\u7528SG\u3067\u300cWeb\u30b5\u30fc\u30d0\u306eSG\u304b\u3089\u306e\u307f\u300d\u3092\u8a31\u53ef\u3059\u308b\u4f8b\uff08IP\u3067\u306f\u306a\u304fSG\u3092\u53c2\u7167\uff09\u3002<\/p>\n<pre class=\"lang:default decode:true\"># \u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\nType          Protocol  Port   Source\nMySQL\/Aurora  TCP       3306   sg-0123web...   # Web\u30b5\u30fc\u30d0\u306eSG\u3092\u76f4\u63a5\u6307\u5b9a<\/pre>\n<p>SG\u3092\u30bd\u30fc\u30b9\u306b\u6307\u5b9a\u3067\u304d\u308b\u306e\u304cSG\u306e\u5f37\u529b\u306a\u70b9\u3067\u3059\u3002\u30aa\u30fc\u30c8\u30b9\u30b1\u30fc\u30eb\u3067IP\u304c\u5909\u308f\u3063\u3066\u3082\u8a2d\u5b9a\u3092\u5909\u3048\u305a\u306b\u6e08\u307f\u307e\u3059\u3002<\/p>\n<h3>\u30cd\u30c3\u30c8\u30ef\u30fc\u30afACL\uff08\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\u306a\u306e\u3067\u623b\u308a\u3092\u660e\u793a\uff09<\/h3>\n<p>\u540c\u3058\u304fHTTP\/HTTPS\u3092\u8a31\u53ef\u3059\u308b\u5834\u5408\u3001<strong>\u623b\u308a\u7528\u306e\u30a8\u30d5\u30a7\u30e1\u30e9\u30eb\u30dd\u30fc\u30c8\u3092\u5225\u9014\u8a31\u53ef<\/strong>\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\"># \u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\uff08\u30eb\u30fc\u30eb\u756a\u53f7\u9806\u306b\u8a55\u4fa1\u3001\u6700\u521d\u306b\u30de\u30c3\u30c1\u3067\u78ba\u5b9a\uff09\nRule#  Type    Protocol  Port        Source          Allow\/Deny\n100    HTTP    TCP       80          0.0.0.0\/0       ALLOW\n110    HTTPS   TCP       443         0.0.0.0\/0       ALLOW\n120    Custom  TCP       1024-65535  0.0.0.0\/0       ALLOW   # \u623b\u308a(\u30a8\u30d5\u30a7\u30e1\u30e9\u30eb)\u53d7\u4fe1\u7528\n*      All     All       All         0.0.0.0\/0       DENY    # \u6697\u9ed9\u306edeny\n\n# \u30a2\u30a6\u30c8\u30d0\u30a6\u30f3\u30c9\uff08\u623b\u308a\u3092\u8fd4\u3059\u305f\u3081\u306b\u5fc5\u9808\uff09\nRule#  Type    Protocol  Port        Dest            Allow\/Deny\n100    Custom  TCP       1024-65535  0.0.0.0\/0       ALLOW   # \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3078\u306e\u5fdc\u7b54\n110    HTTP    TCP       80          0.0.0.0\/0       ALLOW   # \u5916\u90e8\u3078\u306e\u767a\u4fe1\u304c\u5fc5\u8981\u306a\u3089\n*      All     All       All         0.0.0.0\/0       DENY<\/pre>\n<p>\u30a8\u30d5\u30a7\u30e1\u30e9\u30eb\u30dd\u30fc\u30c8\uff08\u4e00\u6642\u30dd\u30fc\u30c8\uff09\u306e\u7bc4\u56f2\u306fOS\/\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u3088\u308a\u7570\u306a\u308b\u305f\u3081\u3001<code>1024-65535<\/code> \u3068\u5e83\u3081\u306b\u958b\u3051\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u3053\u3053\u3092\u958b\u3051\u5fd8\u308c\u308b\u3068\u300cSG\u306f\u6b63\u3057\u3044\u306e\u306b\u5fdc\u7b54\u304c\u8fd4\u3089\u306a\u3044\u300d\u3068\u3044\u3046\u5178\u578b\u7684\u306a\u30cf\u30de\u308a\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<p>\u7279\u5b9aIP\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u4f8b\uff08NACL\u306a\u3089\u3067\u306f\uff09\u3002DENY\u3092\u8a31\u53ef\u30eb\u30fc\u30eb\u3088\u308a\u5c0f\u3055\u3044\u756a\u53f7\u306b\u7f6e\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\">Rule#  Type    Protocol  Port   Source            Allow\/Deny\n90     All     All       All    198.51.100.5\/32   DENY    # \u3053\u306eIP\u3092\u5148\u306b\u62d2\u5426\n100    HTTP    TCP       80     0.0.0.0\/0         ALLOW<\/pre>\n<h2>\u78ba\u8a8d\u65b9\u6cd5<\/h2>\n<ul>\n<li><strong>SG\u306e\u78ba\u8a8d<\/strong>: EC2\u30b3\u30f3\u30bd\u30fc\u30eb \u2192 \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\u3001\u307e\u305f\u306f <code>aws ec2 describe-security-groups<\/code><\/li>\n<li><strong>NACL\u306e\u78ba\u8a8d<\/strong>: VPC\u30b3\u30f3\u30bd\u30fc\u30eb \u2192 \u30cd\u30c3\u30c8\u30ef\u30fc\u30afACL\u3001\u307e\u305f\u306f <code>aws ec2 describe-network-acls<\/code><\/li>\n<li><strong>\u901a\u4fe1\u4e0d\u9054\u306e\u5207\u308a\u5206\u3051<\/strong>: VPC Flow Logs \u3092\u6709\u52b9\u5316\u3057\u3001<code>ACCEPT<\/code>\/<code>REJECT<\/code> \u3092\u78ba\u8a8d\u3059\u308b\u3002SG\u3067REJECT\u3055\u308c\u305f\u306e\u304bNACL\u3067\u3055\u308c\u305f\u306e\u304b\u306fFlow Logs\u3060\u3051\u3067\u306f\u76f4\u63a5\u5224\u5225\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u4e21\u65b9\u306e\u8a2d\u5b9a\u3092\u7a81\u304d\u5408\u308f\u305b\u307e\u3059<\/li>\n<\/ul>\n<h2>\u6ce8\u610f\u70b9<\/h2>\n<ul>\n<li><strong>NACL\u306e\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\u6027\u3092\u5e38\u306b\u610f\u8b58\u3059\u308b<\/strong>\u3002\u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\u3092\u958b\u3051\u305f\u3089\u30a2\u30a6\u30c8\u30d0\u30a6\u30f3\u30c9\u306e\u623b\u308a\uff08\u30a8\u30d5\u30a7\u30e1\u30e9\u30eb\uff09\u3082\u958b\u3051\u308b\u3001\u3092\u5fc5\u305a\u30bb\u30c3\u30c8\u3067\u8003\u3048\u308b<\/li>\n<li><strong>\u30c7\u30d5\u30a9\u30eb\u30c8NACL\u306f\u5168\u8a31\u53ef<\/strong>\u3002\u4f55\u3082\u3057\u306a\u3051\u308c\u3070NACL\u306f\u5b9f\u8cea\u7121\u52b9\u306a\u306e\u3067\u3001\u307e\u305aSG\u3067\u7d44\u307f\u3001\u5fc5\u8981\u306a\u3089NACL\u3092\u8db3\u3059<\/li>\n<li>NACL\u306e\u30eb\u30fc\u30eb\u756a\u53f7\u306f<strong>\u9593\u9694\u3092\u7a7a\u3051\u3066\u63a1\u756a<\/strong>\u3059\u308b\uff08100, 110, 120\u2026\uff09\u3002\u5f8c\u304b\u3089\u9593\u306b\u633f\u5165\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081<\/li>\n<li>SG\u306b\u306f<strong>\u62d2\u5426\u304c\u66f8\u3051\u306a\u3044<\/strong>\u3002\u300c\u7279\u5b9aIP\u3092\u5f3e\u304f\u300d\u8981\u4ef6\u304c\u51fa\u305f\u3089\u8a2d\u8a08\u6bb5\u968e\u3067NACL\u3092\u691c\u8a0e\u3059\u308b<\/li>\n<\/ul>\n<h2>\u307e\u3068\u3081<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u89b3\u70b9<\/th>\n<th>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7<\/th>\n<th>\u30cd\u30c3\u30c8\u30ef\u30fc\u30afACL<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u9069\u7528\u5c64<\/td>\n<td>ENI\uff08\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\uff09<\/td>\n<td>\u30b5\u30d6\u30cd\u30c3\u30c8<\/td>\n<\/tr>\n<tr>\n<td>\u72b6\u614b\u7ba1\u7406<\/td>\n<td>\u30b9\u30c6\u30fc\u30c8\u30d5\u30eb\uff08\u623b\u308a\u81ea\u52d5\u8a31\u53ef\uff09<\/td>\n<td>\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\uff08\u623b\u308a\u8981\u660e\u793a\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u30eb\u30fc\u30eb<\/td>\n<td>\u8a31\u53ef\u306e\u307f<\/td>\n<td>\u8a31\u53ef\u30fb\u62d2\u5426<\/td>\n<\/tr>\n<tr>\n<td>\u8a55\u4fa1<\/td>\n<td>\u5168\u30eb\u30fc\u30eb\u8a55\u4fa1<\/td>\n<td>\u756a\u53f7\u9806\u30fb\u6700\u521d\u306e\u30de\u30c3\u30c1\u3067\u78ba\u5b9a<\/td>\n<\/tr>\n<tr>\n<td>SG\u53c2\u7167<\/td>\n<td>\u53ef\u80fd<\/td>\n<td>\u4e0d\u53ef\uff08CIDR\u306e\u307f\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u4e3b\u306a\u5f79\u5272<\/td>\n<td>\u30e1\u30a4\u30f3\u306e\u5236\u5fa1<\/td>\n<td>\u88dc\u52a9\u30fb\u591a\u5c64\u9632\u5fa1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u307e\u305a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\u3067\u7d44\u3080\u3002\u62d2\u5426\u8981\u4ef6\u3084\u30b5\u30d6\u30cd\u30c3\u30c8\u5358\u4f4d\u306e\u30ac\u30fc\u30c9\u304c\u5fc5\u8981\u306b\u306a\u3063\u305f\u3089\u30cd\u30c3\u30c8\u30ef\u30fc\u30afACL\u3092\u8db3\u3059\u3002<\/strong> \u3053\u308c\u304c\u5b9f\u52d9\u3067\u306e\u9244\u5247\u3067\u3059\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30afACL\u306e\u300c\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\uff1d\u623b\u308a\u3092\u5225\u306b\u958b\u3051\u308b\u300d\u3068\u3044\u3046\u70b9\u3060\u3051\u306f\u3001\u982d\u306b\u53e9\u304d\u8fbc\u3093\u3067\u304a\u304f\u3068\u4e8b\u6545\u304c\u6fc0\u6e1b\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>AWS\u306eVPC\u306b\u306f\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u5236\u5fa1\u3059\u308b\u4ed5\u7d44\u307f\u304c2\u7a2e\u985e\u3042\u308a\u307e\u3059\u3002\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\uff08Security Group, SG\uff09 \u3068 \u30cd\u30c3\u30c8\u30ef\u30fc\u30afACL\uff08Network ACL, NACL\uff09 \u3067\u3059\u3002\u3069\u3061\u3089\u3082\u300c\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u300d\u3068\u8aac\u660e\u3055\u308c\u308b\u305f\u3081\u2026<\/p>\n","protected":false},"author":1,"featured_media":3447,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"","vkexunit_cta_each_option":"","_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[75],"tags":[499,1031,1095],"class_list":["post-3448","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-code-of-serverside","tag-aws","tag-ec2","tag-1095"],"veu_head_title_object":{"title":"","add_site_title":""},"jetpack_publicize_connections":[],"jetpack-related-posts":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/qol-kk.com\/wp2\/wp-content\/uploads\/2026\/09\/20260924-plan039-thumbnail.jpg","_links":{"self":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts\/3448","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/comments?post=3448"}],"version-history":[{"count":1,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts\/3448\/revisions"}],"predecessor-version":[{"id":3451,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts\/3448\/revisions\/3451"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/media\/3447"}],"wp:attachment":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/media?parent=3448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/categories?post=3448"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/tags?post=3448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}