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\u30dd\u30a4\u30f3\u30c8<\/strong>\u306e\u9806\u3067\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n<h3>\u653b\u6483\u624b\u6cd5 \u2192 \u30ed\u30b0\u89e3\u6790 \u2192 \u5bfe\u7b56<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1aSQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\uff0fXSS\uff0fDoS\u306e\u7279\u5fb4\u3092\u554f\u3046\uff08\u9078\u629e\u30fb\u8a18\u8ff0\uff09<\/li>\n<li>\u5c0f\u554f2\uff1a\u30a2\u30af\u30bb\u30b9\u30ed\u30b0\u3084\u30a2\u30d7\u30ea\u30ed\u30b0\u306e\u65ad\u7247\u304b\u3089\u653b\u6483\u306e\u6210\u7acb\u6709\u7121\u3092\u5224\u5b9a<\/li>\n<li>\u5c0f\u554f3\uff1a\u5165\u529b\u5024\u691c\u8a3c\u3001\u30a8\u30b9\u30b1\u30fc\u30d7\u3001WAF\u3001\u30ec\u30fc\u30c8\u5236\u9650\u306a\u3069\u5177\u4f53\u7684\u5bfe\u7b56\u3092\u63d0\u6848<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u624b\u6cd5\u306e\u6c7a\u5b9a\u6728\u3092\u7528\u610f\uff08URL\u306b\u30b9\u30af\u30ea\u30d7\u30c8\u2192XSS\uff0f\u30af\u30a8\u30ea\u306b<code>' OR '1'='1<\/code>\u2192SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\uff0f\u5927\u91cf\u30ea\u30af\u30a8\u30b9\u30c8\u2192DoS\uff09<\/li>\n<li>\u30ed\u30b0\u306e\u75d5\u8de1\uff08\u30a8\u30e9\u30fc\u5fdc\u7b54\u3001\u7570\u5e38\u30af\u30a8\u30ea\u3001\u540c\u4e00IP\u591a\u767a\uff09\u3092\u5bfe\u5fdc\u3065\u3051\u308b<\/li>\n<li>\u539f\u56e0\u306b\u76f4\u7d50\u3059\u308b\u5bfe\u7b56\u30921:1\u3067\u63d0\u793a\uff08\u4f8b\uff1aSQLi\u2192\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\uff0b\u6700\u5c0f\u6a29\u9650\uff09<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u5c0f\u554f1\u306e\u8b58\u5225\u304c\u305d\u306e\u307e\u307e\u5c0f\u554f2\u306e\u6839\u62e0\u30fb\u5c0f\u554f3\u306e\u5bfe\u7b56\u306b\u9023\u9396\u3057\u307e\u3059\u3002<\/p>\n<h3>\u8a8d\u8a3c\u65b9\u5f0f \u2192 \u5f31\u70b9 \u2192 \u6539\u5584<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1aID\/\u30d1\u30b9\u30ef\u30fc\u30c9\u3001OTP\u3001FIDO\u306a\u3069\u65b9\u5f0f\u306e\u7279\u5fb4\u3092\u8aac\u660e<\/li>\n<li>\u5c0f\u554f2\uff1a\u8f9e\u66f8\u653b\u6483\uff0f\u30ea\u30d7\u30ec\u30a4\uff0f\u30d1\u30b9\u30ef\u30fc\u30c9\u4f7f\u3044\u56de\u3057\u7b49\u306e\u5f31\u70b9\u3092\u6307\u6458<\/li>\n<li>\u5c0f\u554f3\uff1aMFA\u5c0e\u5165\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u30dd\u30ea\u30b7\u30fc\u3001\u76e3\u67fb\u30ed\u30b0\u3084\u30a2\u30e9\u30fc\u30c8\u95be\u5024\u8a2d\u5b9a\u3092\u63d0\u6848<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u65b9\u5f0f\u3054\u3068\u306e\u300c\u4f55\u304c\u76d7\u307e\u308c\u3046\u308b\u304b\uff0f\u518d\u5229\u7528\u3055\u308c\u3046\u308b\u304b\u300d\u3092\u6574\u7406<\/li>\n<li>\u5f31\u70b9\u2192\u5bfe\u7b56\u3092\u5bfe\u5fdc\u8868\u3067\u5373\u7b54\uff08\u4f8b\uff1a\u30ea\u30d7\u30ec\u30a4\u2192\u30c1\u30e3\u30ec\u30f3\u30b8\u30ec\u30b9\u30dd\u30f3\u30b9\uff0f\u30ef\u30f3\u30bf\u30a4\u30e0\u5316\uff09<\/li>\n<li>\u904b\u7528\u307e\u3067\u8e0f\u307f\u8fbc\u3080\uff08\u30a2\u30ab\u30a6\u30f3\u30c8\u30ed\u30c3\u30af\u3001\u30ea\u30b9\u30af\u30d9\u30fc\u30b9\u8a8d\u8a3c\u3001\u7aef\u672b\u7d10\u3065\u3051\uff09<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u65b9\u5f0f\u306e\u5b9a\u7fa9\uff08\u5c0f\u554f1\uff09\u3092\u6b63\u3057\u304f\u62bc\u3055\u3048\u308b\u3068\u3001\u5f31\u70b9\uff08\u5c0f\u554f2\uff09\u2192\u5bfe\u7b56\uff08\u5c0f\u554f3\uff09\u304c\u81ea\u52d5\u7684\u306b\u5b9a\u307e\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30de\u30eb\u30a6\u30a7\u30a2\uff0f\u6a19\u7684\u578b\u30e1\u30fc\u30eb \u2192 \u6319\u52d5\u89e3\u6790 \u2192 \u5bfe\u5fdc<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1a\u30e1\u30fc\u30eb\u6587\u9762\u30fb\u5dee\u51fa\u4eba\u30fb\u6dfb\u4ed8\u62e1\u5f35\u5b50\u304b\u3089\u4e0d\u5be9\u6027\u3092\u8a55\u4fa1<\/li>\n<li>\u5c0f\u554f2\uff1a\u7aef\u672b\u30ed\u30b0\uff08\u672a\u77e5\u30c9\u30e1\u30a4\u30f3\u3078\u306e\u5916\u90e8\u901a\u4fe1\u3001\u6697\u53f7\u5316\u51e6\u7406\uff09\u304b\u3089\u6319\u52d5\u7279\u5b9a<\/li>\n<li>\u5c0f\u554f3\uff1a\u521d\u52d5\u5bfe\u5fdc\uff08\u9694\u96e2\u30fb\u30d5\u30a9\u30ec\u30f3\u30b8\u30c3\u30af\u30fbIOC\u5171\u6709\uff09\u3068\u518d\u767a\u9632\u6b62\u7b56\u3092\u63d0\u793a<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\uff0f\u30de\u30eb\u30b9\u30d1\u30e0\u306e\u5178\u578b\u30d1\u30bf\u30fc\u30f3\u306b\u5f53\u3066\u306f\u3081\u308b<\/li>\n<li>\u901a\u4fe1\u5148\u30fb\u30d7\u30ed\u30bb\u30b9\u751f\u6210\u30fb\u6697\u53f7\u5316\u958b\u59cb\u306a\u3069IOC\u3067\u5206\u985e<\/li>\n<li>CSIRT\u904b\u7528\u306e\u57fa\u672c\u624b\u9806\uff08\u691c\u77e5\u2192\u5c01\u3058\u8fbc\u3081\u2192\u6839\u7d76\u2192\u5fa9\u65e7\u2192\u518d\u767a\u9632\u6b62\uff09\u3067\u56de\u7b54\u69cb\u6210<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a<em>\u6280\u8853\u7684\u6839\u62e0\uff0b\u7d44\u7e54\u7684\u5bfe\u5fdc<\/em>\u3092\u30bb\u30c3\u30c8\u3067\u66f8\u304f\u3068\u914d\u70b9\u304c\u5b89\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<h3>\u6697\u53f7\u5316\/PKI \u2192 \u52d5\u4f5c\u7406\u89e3 \u2192 \u904b\u7528\u6539\u5584<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1a\u516c\u958b\u9375\u6697\u53f7\uff0f\u5171\u901a\u9375\u6697\u53f7\uff0f\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306e\u5f79\u5272\u3092\u554f\u3046<\/li>\n<li>\u5c0f\u554f2\uff1a\u7f72\u540d\u30fb\u691c\u8a3c\uff0f\u6697\u53f7\u5316\u30fb\u5fa9\u53f7\u306e\u624b\u9806\u3092\u4e26\u3079\u66ff\u3048\u30fb\u7a74\u57cb\u3081<\/li>\n<li>\u5c0f\u554f3\uff1a\u8a3c\u660e\u66f8\u671f\u9650\u30fb\u5931\u52b9\uff08CRL\/OCSP\uff09\u30fb\u9375\u66f4\u65b0\u30fb\u4fdd\u7ba1\u306e\u6539\u5584\u7b56\u3092\u554f\u3046<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u300c\u6697\u53f7\u5316\u306f\u76f8\u624b\u306e<strong>\u516c\u958b\u9375<\/strong>\u300d\u300c\u5fa9\u53f7\u306f\u81ea\u5206\u306e<strong>\u79d8\u5bc6\u9375<\/strong>\u300d\u300c\u7f72\u540d\u306f<strong>\u79d8\u5bc6\u9375<\/strong>\u3067\u4f5c\u6210\u30fb<strong>\u516c\u958b\u9375<\/strong>\u3067\u691c\u8a3c\u300d\u3092\u5fb9\u5e95\u6697\u8a18<\/li>\n<li>\u901a\u4fe1\u5f53\u4e8b\u8005\u306e\u9375\u306e\u6301\u3061\u65b9\u306b\u6ce8\u610f\u3057\u3066\u624b\u9806\u3092\u63a5\u7d9a<\/li>\n<li>\u904b\u7528\u306f\u6709\u52b9\u671f\u9650\u30fb\u5931\u52b9\u30fb\u9375\u4fdd\u8b77\uff08HSM\u7b49\uff09\u30fb\u30ed\u30fc\u30eb\u5206\u96e2\u307e\u3067\u66f8\u304f<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u6280\u8853\u3068\u904b\u7528\u306e\u4e21\u8f2a\u3002\u5c0f\u554f1\u30fb2\u306e\u6b63\u78ba\u306a\u624b\u9806\u7406\u89e3\u304c\u5c0f\u554f3\u306e\u904b\u7528\u6539\u5584\u306e\u524d\u63d0\u3067\u3059\u3002<\/p>\n<h3>\uff08\u88dc\u8db3\uff09ACL\u304c\u7d61\u3080\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u51fa\u984c\u306e\u8aad\u307f\u65b9<\/h3>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5bc4\u308a\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a2d\u554f\u3067ACL\u304c\u51fa\u308b\u5834\u5408\u3001<strong>\u30eb\u30fc\u30eb\u306f\u4e0a\u304b\u3089\u8a55\u4fa1\u2192\u6700\u521d\u306b\u30de\u30c3\u30c1\u3092\u9069\u7528\u2192\u6697\u9ed9\u306e<span style=\"white-space: nowrap;\">deny any any<\/span><\/strong> \u3092\u524d\u63d0\u306b\u3001\u901a\u4fe1\u53ef\u5426\u3068\u6539\u5584\uff08\u30eb\u30fc\u30eb\u9806\u5e8f\u30fb\u7c92\u5ea6\u8abf\u6574\u30fb\u30ed\u30b0\u5316\uff09\u3092\u7b54\u3048\u307e\u3059\u3002<\/p>\n<article>\n<h2>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5206\u91ce\u306e\u983b\u51fa\u30b9\u30c8\u30fc\u30ea\u30fc\uff08\u5177\u4f53\u7684\u51fa\u984c\u30d1\u30bf\u30fc\u30f3\u4ed8\u304d\uff09<\/h2>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5206\u91ce\u306f\u3001<strong>\u30a2\u30c9\u30ec\u30b9\u8a2d\u8a08\uff0f\u901a\u4fe1\u53ef\u5426\u306e\u5224\u65ad<\/strong>\u3092\u8d77\u70b9\u306b\u3001<strong>\u8a2d\u8a08\u6539\u5584\u3084\u904b\u7528\u63d0\u6848<\/strong>\u3078\u3068\u9032\u3080\u30b7\u30ca\u30ea\u30aa\u304c\u57fa\u672c\u3067\u3059\u3002\u4ee5\u4e0b\u3067\u306f\u5404\u30d1\u30bf\u30fc\u30f3\u3054\u3068\u306b<strong>\u51fa\u984c\u4f8b \u2192 \u89e3\u304d\u65b9 \u2192 \u30dd\u30a4\u30f3\u30c8<\/strong>\u306e\u9806\u3067\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n<h3>\uff08\u6e96\u5099\uff09ACL\u3068\u306f\uff1f\u2500\u2500\u901a\u4fe1\u53ef\u5426\u3092\u6c7a\u3081\u308b\u201c\u901a\u884c\u8a31\u53ef\u8a3c\u201d<\/h3>\n<p><strong>ACL\uff08Access Control List\uff09<\/strong>\u306f\u3001\u30eb\u30fc\u30bf\uff0f\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u7b49\u3067<strong>\u9001\u4fe1\u5143IP\u30fb\u5b9b\u5148IP\u30fb\u30d7\u30ed\u30c8\u30b3\u30eb\u30fb\u30dd\u30fc\u30c8<\/strong>\u306a\u3069\u3092\u6761\u4ef6\u306b\u3001\u901a\u4fe1\u3092<code>permit<\/code>\uff08\u8a31\u53ef\uff09\uff0f<code>deny<\/code>\uff08\u62d2\u5426\uff09\u3059\u308b<strong>\u30eb\u30fc\u30eb\u306e\u96c6\u5408<\/strong>\u3067\u3059\u3002\u8a55\u4fa1\u306f<strong>\u4e0a\u304b\u3089\u9806\u306b<\/strong>\u884c\u308f\u308c\u3001<strong>\u6700\u521d\u306b\u4e00\u81f4<\/strong>\u3057\u305f\u30eb\u30fc\u30eb\u3092\u9069\u7528\u3057\u3001\u6700\u5f8c\u306f\u6697\u9ed9\u306e<strong>deny any any<\/strong>\u3068\u306a\u308b\u306e\u304c\u5b9a\u756a\u3067\u3059\u3002<\/p>\n<pre>access-list 101 permit tcp 192.168.1.0 0.0.0.255 any eq 80\naccess-list 101 deny   ip  any any\n<\/pre>\n<ul>\n<li>\u5185\u90e8\uff08192.168.1.0\/24\uff09\u2192\u5916\u90e8\u3078\u306eHTTP\uff0880\/TCP\uff09\uff1a<strong>\u8a31\u53ef<\/strong><\/li>\n<li>\u305d\u308c\u4ee5\u5916\u306e\u901a\u4fe1\uff1a<strong>\u62d2\u5426<\/strong><\/li>\n<\/ul>\n<p><strong>\u5178\u578b\u7684\u51fa\u984c<\/strong>\uff1aACL\u884c\u3092\u8aad\u307f\u3001\u7279\u5b9a\u306e\u901a\u4fe1\u304c\u901a\u308b\u304b\uff0f\u901a\u3089\u306a\u3044\u304b\u3092\u5224\u5b9a\u3002\u6539\u5584\u7b56\u3068\u3057\u3066<strong>\u30eb\u30fc\u30eb\u306e\u9806\u5e8f\u30fb\u7c92\u5ea6\u30fb\u30ed\u30b0\u5316<\/strong>\u306e\u898b\u76f4\u3057\u3092\u554f\u3046\u3002<\/p>\n<h3>\u30a2\u30c9\u30ec\u30b9\u8a08\u7b97 \u2192 \u901a\u4fe1\u53ef\u5426\u5224\u65ad \u2192 \u8a2d\u8a08\u6539\u5584<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1a<code>\/27<\/code> \u7b49\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\uff0f\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\uff0f\u6709\u52b9\u30db\u30b9\u30c8\u7bc4\u56f2\u3092\u7b97\u51fa<\/li>\n<li>\u5c0f\u554f2\uff1a\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u8868\u30fbACL\u30fbNAT\u8868\u3092\u63d0\u793a\u3057\u7279\u5b9a\u901a\u4fe1\u306e\u53ef\u5426\u3092\u5224\u65ad<\/li>\n<li>\u5c0f\u554f3\uff1a\u30bb\u30b0\u30e1\u30f3\u30c8\u5206\u5272\u3001\u30b5\u30de\u30ea\u3001ACL\u6700\u9069\u5316\u306a\u3069\u8a2d\u8a08\u6539\u5584\u3092\u63d0\u6848<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u307e\u305a<strong>\u7bc4\u56f2\u8a08\u7b97<\/strong>\uff08\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30fb\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30fb\u53ef\u7528\u7bc4\u56f2\uff09\u3092\u78ba\u5b9a\u3057\u3066\u30e1\u30e2<\/li>\n<li>\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0 \u2192 NAT \u2192 ACL \u306e\u9806\u306b<strong>\u901a\u904e\u7d4c\u8def<\/strong>\u3092\u8ffd\u8de1\u3057\u53ef\u5426\u3092\u5224\u5b9a<\/li>\n<li>\u901a\u3089\u306a\u3044\u7406\u7531\uff08\u7d4c\u8def\u306a\u3057\uff0f\u5909\u63db\u306a\u3057\uff0fACL deny\uff09\u306b\u5bfe\u5fdc\u3057\u305f\u6539\u5584\u7b56\u30921:1\u3067\u63d0\u793a<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u5c0f\u554f1\u306e\u7bc4\u56f2\u8a08\u7b97\u304c\u571f\u53f0\u3002ACL\u306e<strong>\u8a55\u4fa1\u9806\u5e8f<\/strong>\u3068<strong>\u6697\u9ed9deny<\/strong>\u3092\u5fd8\u308c\u306a\u3044\u3002<\/p>\n<h3>\u30d7\u30ed\u30c8\u30b3\u30eb\u52d5\u4f5c \u2192 \u30ed\u30b0\u89e3\u6790 \u2192 \u5bfe\u7b56<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1aARP\uff0fICMP\uff0fDNS\uff0fDHCP\u306e\u5f79\u5272\u3084\u30d5\u30ed\u30fc\u3092\u78ba\u8a8d<\/li>\n<li>\u5c0f\u554f2\uff1a\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u304b\u3089\u7570\u5e38\uff08ARP\u30c6\u30fc\u30d6\u30eb\u6c5a\u67d3\u3001DNS\u5fdc\u7b54\u4e0d\u6b63\u306a\u3069\uff09\u3092\u7279\u5b9a<\/li>\n<li>\u5c0f\u554f3\uff1a\u5bfe\u7b56\uff08\u9759\u7684ARP\u30fbDHCP\u30b9\u30cc\u30fc\u30d4\u30f3\u30b0\u30fbDNSSEC\u30fbICMP\u5236\u5fa1\u7b49\uff09\u3092\u63d0\u6848<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u5404\u30d7\u30ed\u30c8\u30b3\u30eb\u306e<strong>\u8ab0\u304c\u8ab0\u306b\u4f55\u3092<\/strong>\u9001\u308b\u304b\u3092\u77e2\u5370\u3067\u628a\u63e1<\/li>\n<li>\u30ad\u30e3\u30d7\u30c1\u30e3\u306e<strong>\u5411\u304d\u30fb\u30dd\u30fc\u30c8\u30fb\u30d5\u30e9\u30b0<\/strong>\u3067\u6b63\u5e38\/\u7570\u5e38\u3092\u8b58\u5225<\/li>\n<li>\u7570\u5e38\u306e\u539f\u56e0\u306b\u76f4\u7d50\u3059\u308b\u8a2d\u5b9a\u30fb\u6a5f\u80fd\u3092<strong>\u540d\u6307\u3057<\/strong>\u3067\u63d0\u6848<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u30ed\u30b0\u306f<strong>\u6642\u7cfb\u5217<\/strong>\u3067\u8aad\u3080\u3002\u539f\u56e0\u2192\u5bfe\u7b56\u3092<strong>1:1\u5bfe\u5fdc<\/strong>\u3055\u305b\u308b\u3068\u6e1b\u70b9\u3055\u308c\u306b\u304f\u3044\u3002<\/p>\n<h3>VPN\/\u6697\u53f7\u5316 \u2192 NAT\u30c8\u30e9\u30d0\u30fc\u30b9 \u2192 \u30ea\u30b9\u30af\u5bfe\u5fdc<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1aIPsec\uff08\u30c8\u30f3\u30cd\u30eb\/\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\uff09\u3001SSL-VPN\u306e\u7279\u5fb4\u3092\u554f\u3046<\/li>\n<li>\u5c0f\u554f2\uff1aNAT\u74b0\u5883\u3067\u306eIPsec\u53ef\u5426\uff08ESP\u306e\u901a\u904e\u6027\u3001UDP 4500\u7b49\uff09\u3092\u5224\u5b9a<\/li>\n<li>\u5c0f\u554f3\uff1a\u30ea\u30b9\u30af\uff08\u30b9\u30d7\u30ea\u30c3\u30c8\u30c8\u30f3\u30cd\u30eb\u7b49\uff09\u3068\u904b\u7528\u7b56\uff08\u30dd\u30ea\u30b7\u30fc\/\u76e3\u67fb\uff09\u3092\u63d0\u793a<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u5229\u7528\u30d7\u30ed\u30c8\u30b3\u30eb\uff08AH\/ESP\u3001UDP\/4500\uff09\u3068<strong>NAT\u306e\u76f8\u6027<\/strong>\u3092\u6574\u7406<\/li>\n<li>\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\/\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u4f4d\u7f6e\u95a2\u4fc2\u3067<strong>\u3069\u3053\u3092NAT\u8d8a\u3048<\/strong>\u3059\u308b\u304b\u3092\u56f3\u89e3<\/li>\n<li>\u53ef\u5426\u306e\u6839\u62e0\u3092\u660e\u793a\u3057\u3001\u5fc5\u8981\u306a\u3089<strong>NAT-T<\/strong>\u3084\u30dd\u30fc\u30c8\u958b\u653e\u3001\u8a2d\u8a08\u5909\u66f4\u3092\u63d0\u6848<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a<em>\u300c\u3069\u306e\u30ec\u30a4\u30e4\u3067\u30ab\u30d7\u30bb\u30eb\u5316\u300d<\/em>\u3068<em>\u300c\u3069\u3053\u3067NAT\u300d<\/em>\u3092\u540c\u6642\u306b\u610f\u8b58\u3002<\/p>\n<h3>\u969c\u5bb3\u5207\u308a\u5206\u3051 \u2192 \u30c6\u30fc\u30d6\u30eb\u78ba\u8a8d \u2192 \u4fee\u6b63\u7b56<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1a<code>ping<\/code>\u30fb<code>traceroute<\/code>\u306e\u7d50\u679c\u304b\u3089\u6545\u969c\u30c9\u30e1\u30a4\u30f3\u3092\u63a8\u5b9a<\/li>\n<li>\u5c0f\u554f2\uff1aARP\u30c6\u30fc\u30d6\u30eb\u30fb\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u8868\u30fbMAC\u30a2\u30c9\u30ec\u30b9\u8868\u3067\u539f\u56e0\u3092\u7279\u5b9a<\/li>\n<li>\u5c0f\u554f3\uff1a\u9759\u7684\u30eb\u30fc\u30c8\u8ffd\u52a0\u3001VLAN\u8a2d\u5b9a\u3001\u30b1\u30fc\u30d6\u30eb\/IF\u4ea4\u63db\u306a\u3069\u662f\u6b63\u63aa\u7f6e<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u30ec\u30a4\u30e4\u9806\u306b<strong>\u7269\u7406\u2192L2\u2192L3<\/strong>\u3067\u5207\u308a\u5206\u3051\uff08\u5230\u9054\u5730\u70b9\u3067\u5c64\u3092\u7279\u5b9a\uff09<\/li>\n<li>\u30c6\u30fc\u30d6\u30eb\u306e<strong>\u4e0d\u6574\u5408<\/strong>\uff08\u4e0d\u6b63\u30a8\u30f3\u30c8\u30ea\u30fb\u6b20\u843d\uff09\u3092\u6839\u62e0\u5316<\/li>\n<li>\u662f\u6b63\u7b56\u306f<strong>\u5373\u52b9\u6027\u306e\u9ad8\u3044\u9806<\/strong>\u306b\u63d0\u793a\uff08\u8a2d\u5b9a\u2192\u30ea\u30ed\u30fc\u30c9\u2192\u4ea4\u63db\uff09<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u8868\u306e\u5024\u306f<strong>\u73fe\u72b6<\/strong>\u3068<strong>\u3042\u308b\u3079\u304d<\/strong>\u306e\u5dee\u5206\u3067\u8a9e\u308b\u3002<\/p>\n<h3>QoS\u5e2f\u57df\u8a08\u7b97 \u2192 \u69cb\u6210\u5224\u65ad \u2192 \u63d0\u6848<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1a\u56de\u7dda\u5e2f\u57df\u30fb\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\uff08VoIP\/\u6620\u50cf\/\u30c7\u30fc\u30bf\uff09\u6761\u4ef6\u3092\u63d0\u793a<\/li>\n<li>\u5c0f\u554f2\uff1a\u5fc5\u8981\u5e2f\u57df\u30fb\u9045\u5ef6\/\u30b8\u30c3\u30bf\u3092\u8a08\u7b97\u3057\u6df7\u96d1\u70b9\u3092\u7279\u5b9a<\/li>\n<li>\u5c0f\u554f3\uff1a\u30ad\u30e5\u30fc\u5236\u5fa1\uff08LLQ\/CBWFQ\uff09\u3084\u5e2f\u57df\u4fdd\u8a3c\/\u6210\u5f62\/\u512a\u5148\u5236\u5fa1\u3092\u8a2d\u8a08<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u6bce\u306e<strong>pps\/\u5e2f\u57df\u898b\u7a4d<\/strong>\u3092\u7b97\u51fa\u3057\u30dc\u30c8\u30eb\u30cd\u30c3\u30afIF\u3092\u7279\u5b9a<\/li>\n<li>\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u7cfb\uff08\u97f3\u58f0\/\u6620\u50cf\uff09\u3092<strong>\u5225\u30ad\u30e5\u30fc<\/strong>\u3067\u512a\u5148\u51e6\u7406<\/li>\n<li>\u6570\u5024\u6839\u62e0\uff08\u8a08\u7b97\u7d50\u679c\uff09\u3092\u793a\u3057\u3066\u69cb\u6210\u3092\u6b63\u5f53\u5316<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a<strong>\u8a08\u7b97\u2192\u8a2d\u8a08<\/strong>\u306e\u77e2\u5370\u3092\u660e\u793a\u3002\u6570\u5024\u306e\u88cf\u4ed8\u3051\u304c\u914d\u70b9\u306b\u76f4\u7d50\u3002<\/p>\n<h3>\u7121\u7ddaLAN\u65b9\u5f0f \u2192 \u901a\u4fe1\u30ed\u30b0\u78ba\u8a8d \u2192 \u8106\u5f31\u6027\u5bfe\u7b56<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1aWEP\/WPA\/WPA2\/WPA3\u306e\u6697\u53f7\u30fb\u8a8d\u8a3c\u65b9\u5f0f\u306e\u9055\u3044\u3092\u78ba\u8a8d<\/li>\n<li>\u5c0f\u554f2\uff1aAP\u30ed\u30b0\uff0f\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u60c5\u5831\u304b\u3089\u65b9\u5f0f\u3084\u5f31\u70b9\u3092\u7279\u5b9a<\/li>\n<li>\u5c0f\u554f3\uff1aWPA3\u5c0e\u5165\u3001\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u8a8d\u8a3c\u3001\u96fb\u6ce2\u8a2d\u8a08\u30fb\u30c1\u30e3\u30cd\u30eb\u8a2d\u8a08\u3092\u63d0\u6848<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>PSK vs 802.1X\/EAP \u7b49\u306e<strong>\u8a8d\u8a3c\u5dee<\/strong>\u3068\u6697\u53f7\u65b9\u5f0f\u3092\u6574\u7406<\/li>\n<li>\u30ed\u30b0\u306e\u63e1\u624b\u904e\u7a0b\u3084\u30ab\u30d0\u30ec\u30c3\u30b8\u4e0d\u8db3\u3092\u6839\u62e0\u306b\u554f\u984c\u70b9\u3092\u7279\u5b9a<\/li>\n<li>\u5bfe\u7b56\u306f<strong>\u65b9\u5f0f\u66f4\u65b0\uff0b\u96fb\u6ce2\u8a2d\u8a08\uff0b\u904b\u7528\u30eb\u30fc\u30eb<\/strong>\u306e\u4e09\u672c\u67f1\u3067\u56de\u7b54<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u65b9\u5f0f\u3060\u3051\u3067\u306a\u304f<strong>\u96fb\u6ce2\/\u904b\u7528<\/strong>\u3082\u5408\u308f\u305b\u3066\u6539\u5584\u3059\u308b\u306e\u304c\u5408\u683c\u7b54\u6848\u3002<\/p>\n<h3>\uff08\u518d\u63b2\uff09ACL\u306e\u8aad\u307f\u65b9\u3068\u6539\u5584\u306e\u66f8\u304d\u65b9<\/h3>\n<ul>\n<li><strong>\u8aad\u307f\u65b9<\/strong>\uff1a\u4e0a\u304b\u3089\u8a55\u4fa1\u2192\u6700\u521d\u306e\u30de\u30c3\u30c1\u9069\u7528\u2192\u6700\u5f8c\u306f\u6697\u9ed9<code>deny any any<\/code><\/li>\n<li><strong>\u6539\u5584<\/strong>\uff1a\u5fc5\u8981\u6700\u5c0f\u9650\u8a31\u53ef\uff08\u6700\u5c0f\u6a29\u9650\uff09\uff0f\u9806\u5e8f\u6700\u9069\u5316\uff0f\u30ed\u30b0\u51fa\u529b\uff08<code>log<\/code>\uff09\uff0f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5316\u3067\u4fdd\u5b88\u6027\u5411\u4e0a<\/li>\n<li><strong>\u8a66\u9a13\u306e\u30b3\u30c4<\/strong>\uff1a\u901a\u4fe1\u304c\u901a\u3089\u306a\u3044\u6642\u306f\u300c\u7d4c\u8def\u30fbNAT\u30fbACL\u300d\u306e\u3069\u3053\u3067\u843d\u3061\u308b\u304b\u3092\u5206\u89e3\u3057\u3066\u6839\u62e0\u3092\u793a\u3059<\/li>\n<\/ul>\n<article>\n<h2>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5206\u91ce\u306e\u983b\u51fa\u30b9\u30c8\u30fc\u30ea\u30fc\uff08\u5177\u4f53\u7684\u51fa\u984c\u30d1\u30bf\u30fc\u30f3\u4ed8\u304d\uff09<\/h2>\n<p>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5206\u91ce\u306f\u3001<strong>ER\u56f3\u30fb\u5236\u7d04<\/strong>\u306e\u7406\u89e3\u3092\u8d77\u70b9\u306b\u3001<strong>SQL\u4f5c\u6210\uff0f\u5b9f\u884c\u8a08\u753b\u8aad\u89e3\uff0f\u904b\u7528\u6539\u5584<\/strong>\u3078\u3068\u9032\u3080\u30b7\u30ca\u30ea\u30aa\u304c\u57fa\u672c\u3067\u3059\u3002\u4ee5\u4e0b\u3067\u306f\u5404\u30d1\u30bf\u30fc\u30f3\u3054\u3068\u306b<strong>\u51fa\u984c\u4f8b \u2192 \u89e3\u304d\u65b9 \u2192 \u30dd\u30a4\u30f3\u30c8<\/strong>\u306e\u9806\u3067\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30c6\u30fc\u30d6\u30eb\u8a2d\u8a08 \u2192 SQL\u5b8c\u6210 \u2192 \u7d50\u679c\u89e3\u91c8<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1aER\u56f3\u3068\u6b63\u898f\u5316\u3001\u4e3b\u30ad\u30fc\uff0f\u5916\u90e8\u30ad\u30fc\uff0f\u5236\u7d04\u306e\u8aad\u307f\u53d6\u308a<\/li>\n<li>\u5c0f\u554f2\uff1aJOIN\u30fbWHERE\u30fbGROUP BY\u30fbORDER BY\u3092\u88dc\u3063\u3066SQL\u3092\u5b8c\u6210<\/li>\n<li>\u5c0f\u554f3\uff1a\u5f97\u3089\u308c\u305f\u7d50\u679c\u8868\u306e\u4ef6\u6570\u30fb\u7279\u5b9a\u5217\u306e\u5024\u30fb\u4e26\u3073\u9806\u3092\u89e3\u91c8<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>ER\u56f3\u304b\u3089<strong>\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u65b9\u5411\uff081\u5bfe\u591a\uff09<\/strong>\u3068<strong>\u5fc5\u9808\/\u4efb\u610f<\/strong>\u3092\u30e1\u30e2\u5316<\/li>\n<li>JOIN\u306f<strong>\u5916\u90e8\u30ad\u30fc\u2192\u53c2\u7167\u5148\u4e3b\u30ad\u30fc<\/strong>\u3067\u7d50\u3076\uff08\u7d50\u5408\u6761\u4ef6\u3092\u660e\u793a\uff09<\/li>\n<li>\u96c6\u8a08\u304c\u7d61\u3080\u5834\u5408\u306f<strong>GROUP BY\u306e\u5217\uff1d\u975e\u96c6\u8a08\u5217<\/strong>\u306e\u539f\u5247\u3067\u6574\u3048\u308b<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u5c0f\u554f1\u306e\u95a2\u4fc2\u6027\u7406\u89e3\u304c\u305d\u306e\u307e\u307eJOIN\u6761\u4ef6\u306b\u76f4\u7d50\u3002\u4ef6\u6570\u30ba\u30ec\u306fJOIN\u306e\u5411\u304d\u3084\u91cd\u8907\u304c\u539f\u56e0\u3002<\/p>\n<h3>\u5236\u7d04\u78ba\u8a8d \u2192 \u5b9f\u884c\u7d50\u679c\u5224\u65ad \u2192 \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5236\u5fa1<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1aUNIQUE\u30fbCHECK\u30fbNOT NULL\u30fb\u5916\u90e8\u30ad\u30fc\u306e\u6709\u7121\u3068\u5185\u5bb9<\/li>\n<li>\u5c0f\u554f2\uff1aINSERT\/UPDATE\u6642\u306e\u6210\u529f\u30fb\u5931\u6557\u30fb\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u767a\u751f\u306e\u6709\u7121\u3092\u5224\u65ad<\/li>\n<li>\u5c0f\u554f3\uff1aCOMMIT\/ROLLBACK\u3084\u5206\u96e2\u30ec\u30d9\u30eb\uff08READ COMMITTED\u7b49\uff09\u306e\u52b9\u679c\u3092\u8aac\u660e<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u5236\u7d04\u3092<strong>\u5217\u5358\u4f4d \/ \u8868\u5358\u4f4d<\/strong>\u3067\u8868\u306b\u6574\u7406\uff08\u3069\u3053\u3067\u5f3e\u304b\u308c\u308b\u304b\u3092\u53ef\u8996\u5316\uff09<\/li>\n<li>\u5b9f\u884c\u9806\u3068\u4f9d\u5b58\u95a2\u4fc2\uff08\u89aa\u5b50\u306e\u5916\u90e8\u30ad\u30fc\uff09\u3092\u6642\u7cfb\u5217\u3067\u8ffd\u3046<\/li>\n<li>\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5883\u754c\uff08BEGIN\uff5eCOMMIT\uff09\u3067\u6574\u5408\u6027\u306e\u5e30\u7d50\u3092\u793a\u3059<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u5236\u7d04\u306f<strong>\u9055\u53cd\u7b87\u6240\u3068\u30bf\u30a4\u30df\u30f3\u30b0<\/strong>\u3092\u7279\u5b9a\u3057\u3066\u7b54\u3048\u308b\u3002\u5206\u96e2\u30ec\u30d9\u30eb\u306f\u300c\u8aad\u307f\u53d6\u308a\u306e\u8a31\u53ef\u7bc4\u56f2\u300d\u3067\u8aac\u660e\u3002<\/p>\n<h3>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5b9a\u7fa9 \u2192 \u5b9f\u884c\u8a08\u753b\u8aad\u307f\u53d6\u308a \u2192 \u6027\u80fd\u6539\u5584<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1a\u5358\u4e00\uff0f\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3001\u30ab\u30d0\u30ea\u30f3\u30b0\u3001\u30af\u30e9\u30b9\u30bf\u5316\u306e\u6709\u7121<\/li>\n<li>\u5c0f\u554f2\uff1aEXPLAIN\u306e\u51fa\u529b\uff08\u30b9\u30ad\u30e3\u30f3\u7a2e\u5225\u30fb\u7d50\u5408\u65b9\u5f0f\u30fb\u63a8\u5b9a\u884c\u6570\uff09\u3092\u89e3\u91c8<\/li>\n<li>\u5c0f\u554f3\uff1a\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u5217\u9806\u30fb\u30d5\u30a3\u30eb\u30bf\u6761\u4ef6\u6700\u9069\u5316\u30fb\u6b63\u898f\u5316\/\u975e\u6b63\u898f\u5316\u306e\u9078\u629e\u3092\u63d0\u6848<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u30d5\u30a3\u30eb\u30bf\u6761\u4ef6\u306e<strong>\u5148\u982d\u4e00\u81f4<\/strong>\u3068\u9078\u629e\u6027\uff08\u30ab\u30fc\u30c7\u30a3\u30ca\u30ea\u30c6\u30a3\uff09\u3092\u8a55\u4fa1<\/li>\n<li>\u5b9f\u884c\u8a08\u753b\u306e<strong>\u30c6\u30fc\u30d6\u30eb\u30a2\u30af\u30bb\u30b9\u9806\u30fb\u7d50\u5408\u65b9\u5f0f\uff08NLJ\/Hash\/Sort-Merge\uff09<\/strong>\u3092\u628a\u63e1<\/li>\n<li>\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u5bfe\u3057\u3066<strong>\u7d22\u5f15\u8a2d\u8a08\uff0fSQL\u66f8\u304d\u63db\u3048\uff0f\u7d71\u8a08\u66f4\u65b0<\/strong>\u30921:1\u3067\u63d0\u793a<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f<strong>WHERE\u6761\u4ef6\u306e\u5148\u982d\u5217<\/strong>\u306b\u9ad8\u9078\u629e\u6027\u5217\u3092\u7f6e\u304f\u306e\u304c\u57fa\u672c\u3002<\/p>\n<h3>\u30ed\u30c3\u30af\u5236\u5fa1 \u2192 \u5b9f\u884c\u9806\u5e8f\u89e3\u91c8 \u2192 \u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u5bfe\u7b56<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1a\u5171\u6709\u30ed\u30c3\u30af\/\u6392\u4ed6\u30ed\u30c3\u30af\u3001\u884c\/\u8868\/\u30da\u30fc\u30b8\u30ed\u30c3\u30af\u306e\u9055\u3044<\/li>\n<li>\u5c0f\u554f2\uff1a\u4e26\u884c\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306e\u64cd\u4f5c\u5217\u304b\u3089\u5f85\u3061\/\u7af6\u5408\/\u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u767a\u751f\u3092\u5224\u65ad<\/li>\n<li>\u5c0f\u554f3\uff1a\u30ed\u30c3\u30af\u7c92\u5ea6\u8abf\u6574\u3001\u30a2\u30af\u30bb\u30b9\u9806\u5e8f\u7d71\u4e00\u3001\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\/\u30ea\u30c8\u30e9\u30a4\u6226\u7565\u3092\u63d0\u6848<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u5404\u64cd\u4f5c\u304c\u53d6\u5f97\u3059\u308b<strong>\u30ed\u30c3\u30af\u7a2e\u5225\u3068\u7bc4\u56f2<\/strong>\u3092\u5bfe\u5fdc\u8868\u306b\u3059\u308b<\/li>\n<li>\u6642\u9593\u8ef8\u3067<strong>\u53d6\u5f97\u2192\u4fdd\u6301\u2192\u89e3\u653e<\/strong>\u3092\u4e26\u3079\u3001\u5faa\u74b0\u5f85\u3061\u306e\u6709\u7121\u3092\u78ba\u8a8d<\/li>\n<li>\u56de\u907f\u7b56\u306f<strong>\u540c\u4e00\u9806\u5e8f\u30a2\u30af\u30bb\u30b9<\/strong>\u3068<strong>\u77ed\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5316<\/strong>\u3092\u512a\u5148<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u306f\u300c\u5faa\u74b0\u5f85\u3061\u300d\u304c\u30ad\u30fc\u30ef\u30fc\u30c9\u3002\u6839\u62e0\u306f<strong>\u6642\u7cfb\u5217\u56f3<\/strong>\u3067\u793a\u3059\u3068\u6e1b\u70b9\u3055\u308c\u306b\u304f\u3044\u3002<\/p>\n<h3>\u96c6\u8a08SQL 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\u904b\u7528\u6539\u5584<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1a\u5b8c\u5168\/\u5dee\u5206\/\u5897\u5206\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3001\u30dd\u30a4\u30f3\u30c8\u30a4\u30f3\u30bf\u30a4\u30e0\u30ea\u30ab\u30d0\u30ea\uff08PITR\uff09\u306e\u6982\u5ff5<\/li>\n<li>\u5c0f\u554f2\uff1a\u969c\u5bb3\u30b7\u30ca\u30ea\u30aa\uff08\u30c7\u30a3\u30b9\u30af\u969c\u5bb3\/\u8ad6\u7406\u524a\u9664\uff09\u3054\u3068\u306e\u5fa9\u65e7\u624b\u9806\u3092\u9078\u629e<\/li>\n<li>\u5c0f\u554f3\uff1aRPO\/RTO\u306b\u5408\u308f\u305b\u305f\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3001\u691c\u8a3c\u624b\u9806\uff08\u30ea\u30b9\u30c8\u30a2\u30c6\u30b9\u30c8\uff09\u306e\u6539\u5584\u3092\u63d0\u6848<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u8981\u4ef6\uff08<strong>RPO\/RTO<\/strong>\uff09\u304b\u3089\u65b9\u5f0f\u3092\u9078\u5b9a\uff08\u5897\u5206\uff0b\u30a2\u30fc\u30ab\u30a4\u30d6\u30ed\u30b0\u7b49\uff09<\/li>\n<li>\u6545\u969c\u7a2e\u5225\u306b\u5fdc\u3058\u3066<strong>\u5fa9\u65e7\u306e\u9806\u5e8f<\/strong>\uff08\u30d5\u30eb\u2192\u5dee\u5206\/\u5897\u5206\u2192\u30ed\u30b0\u9069\u7528\uff09\u3092\u660e\u8a18<\/li>\n<li>\u904b\u7528\u3067\u306f<strong>\u4fdd\u5b58\u671f\u9593\u30fb\u4e16\u4ee3\u7ba1\u7406\u30fb\u5b9a\u671f\u30ea\u30b9\u30c8\u30a2<\/strong>\u3092\u30bb\u30c3\u30c8\u3067\u63d0\u793a<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u5fa9\u65e7\u306f<strong>\u9806\u5e8f\u554f\u984c<\/strong>\u3002\u8981\u4ef6\u3068\u624b\u9806\u306e\u5bfe\u5fdc\u30921:1\u3067\u66f8\u3051\u308b\u3068\u5f37\u3044\u3002<\/p>\n<h3>\uff08\u8a66\u9a13\u306e\u30b3\u30c4\uff09\u5c0f\u554f\u3092\u6a2a\u65ad\u3059\u308b\u30e1\u30e2\u8853<\/h3>\n<ul>\n<li><strong>\u95a2\u4fc2\u30e1\u30e2<\/strong>\uff1a\u8868\u9593\u306e1\u5bfe\u591a\u3001\u5fc5\u9808\/\u4efb\u610f\u3001\u5916\u90e8\u30ad\u30fc\u5217<\/li>\n<li><strong>\u7d22\u5f15\u30e1\u30e2<\/strong>\uff1aWHERE\u5217\u3001\u7d50\u5408\u5217\u3001\u4e26\u3073\u66ff\u3048\u5217\u306e\u4f7f\u7528\u983b\u5ea6<\/li>\n<li><strong>\u6574\u5408\u30e1\u30e2<\/strong>\uff1a\u5236\u7d04\u9055\u53cd\u306e\u767a\u751f\u7b87\u6240\u3068<\/li>\n<\/ul>\n<article>\n<h2>\u30b7\u30b9\u30c6\u30e0\u30a2\u30fc\u30ad\u30c6\u30af\u30c8\u5206\u91ce\u306e\u983b\u51fa\u30b9\u30c8\u30fc\u30ea\u30fc\uff08\u5177\u4f53\u7684\u51fa\u984c\u30d1\u30bf\u30fc\u30f3\u4ed8\u304d\uff09<\/h2>\n<p>\u30b7\u30b9\u30c6\u30e0\u30a2\u30fc\u30ad\u30c6\u30af\u30c8\u5206\u91ce\u306f\u3001<strong>\u8981\u4ef6\u5b9a\u7fa9<\/strong>\u3092\u8d77\u70b9\u306b\u3001<strong>\u8a2d\u8a08\u30fb\u6570\u5024\u8a08\u7b97\u30fb\u7d4c\u55b6\u5224\u65ad<\/strong>\u307e\u3067\u3092\u4e00\u6c17\u901a\u8cab\u3067\u554f\u3046\u30b7\u30ca\u30ea\u30aa\u304c\u57fa\u672c\u3067\u3059\u3002\u4ee5\u4e0b\u3067\u306f\u5404\u30d1\u30bf\u30fc\u30f3\u3092<strong>\u51fa\u984c\u4f8b \u2192 \u89e3\u304d\u65b9 \u2192 \u30dd\u30a4\u30f3\u30c8<\/strong>\u306e\u9806\u3067\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n<h3>\u8981\u4ef6\u5b9a\u7fa9 \u2192 \u8a2d\u8a08\/\u8a08\u7b97 \u2192 \u7d4c\u55b6\u63d0\u6848<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1a\u6a5f\u80fd\/\u975e\u6a5f\u80fd\u8981\u4ef6\uff08\u5fdc\u7b54\u6642\u9593\u3001\u53ef\u7528\u6027\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3001\u62e1\u5f35\u6027\uff09\u3092\u6574\u7406<\/li>\n<li>\u5c0f\u554f2\uff1a\u8981\u4ef6\u3092\u6e80\u305f\u3059\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\uff083\u5c64\u3001\u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u3001\u30af\u30e9\u30a6\u30c9\u69cb\u6210\uff09\u3084\u53f0\u6570\/\u898f\u6a21\u3092\u7b97\u51fa<\/li>\n<li>\u5c0f\u554f3\uff1a\u63d0\u6848\u66f8\u8981\u65e8\uff08\u30e1\u30ea\u30c3\u30c8\/\u30c7\u30e1\u30ea\u30c3\u30c8\u3001\u30ea\u30b9\u30af\u3001\u79fb\u884c\u8a08\u753b\uff09\u3092\u9078\u5b9a<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u975e\u6a5f\u80fd\u8981\u4ef6\u3092<strong>\u6570\u5b57<\/strong>\u306b\u843d\u3068\u3059\uff08\u5fdc\u7b542\u79d2\u3001\u7a3c\u50cd99.95%\u306a\u3069\uff09<\/li>\n<li>\u5236\u7d04\uff08\u4e88\u7b97\/\u7d0d\u671f\/\u904b\u7528\u4f53\u5236\uff09\u3068\u8981\u4ef6\u306e<strong>\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5<\/strong>\u3092\u6574\u7406\u3057\u3066\u8a2d\u8a08\u3092\u9078\u3076<\/li>\n<li>\u9078\u5b9a\u7406\u7531\u3092<strong>\u8981\u4ef6\u3068\u306e\u5bfe\u5fdc\u8868<\/strong>\u3067\u660e\u793a\u3057\u3001\u7d4c\u55b6\u8996\u70b9\u306e\u52b9\u679c\u3092\u6dfb\u3048\u308b<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u8a2d\u8a08\u306e\u6b63\u5f53\u6027\u306f\u300c\u8981\u4ef6\u2192\u8a2d\u8a08\u300d\u306e<strong>\u30c8\u30ec\u30fc\u30b5\u30d3\u30ea\u30c6\u30a3<\/strong>\u3067\u793a\u3059\u3002<\/p>\n<h3>\u6027\u80fd\u8981\u4ef6\u63d0\u793a \u2192 \u30b5\u30fc\u30d0\u53f0\u6570\u8a08\u7b97 \u2192 \u8ca0\u8377\u5206\u6563\u5224\u65ad<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1a\u30d4\u30fc\u30af\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3001TPS\u3001\u540c\u6642\u63a5\u7d9a\u6570\u3001\u30b9\u30ec\u30c3\u30c9\/\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u5236\u9650\u304c\u4e0e\u3048\u3089\u308c\u308b<\/li>\n<li>\u5c0f\u554f2\uff1a\u5fc5\u8981\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u3084\u53f0\u6570\u3001\u5197\u9577\u5316\u69cb\u6210\u3092\u8a08\u7b97<\/li>\n<li>\u5c0f\u554f3\uff1aLB\u65b9\u5f0f\uff08L4\/L7\uff09\u3001\u30b9\u30c6\u30a3\u30c3\u30ad\u30fc\u8981\u5426\u3001\u30b9\u30b1\u30fc\u30eb\u30a2\u30c3\u30d7\/\u30a2\u30a6\u30c8\u306e\u5224\u65ad<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u5358\u4f53\u30b5\u30fc\u30d0\u306e\u51e6\u7406\u80fd\u529b\uff08TPS\/\u30b5\u30fc\u30d0\uff09\u3092\u6839\u62e0\u306b<strong>\u53f0\u6570\uff1d\u5929\u4e95\/\u4e00\u53f0\u5bb9\u91cf<\/strong>\u3067\u7b97\u51fa<\/li>\n<li>\u5197\u9577\u5316\u5206\uff08N+1\u306a\u3069\uff09\u3092\u52a0\u5473\u3057\u3066\u6700\u7d42\u53f0\u6570\u3092\u6c7a\u5b9a<\/li>\n<li>\u30bb\u30c3\u30b7\u30e7\u30f3\u4fdd\u6301\u3084\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u8003\u616e\u3057\u3001LB\/\u5206\u6563\u6226\u7565\u3092\u6574\u5408\u3055\u305b\u308b<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u8a08\u7b97\u7d50\u679c\u306b<strong>\u5197\u9577\u5316<\/strong>\u3092\u5165\u308c\u5fd8\u308c\u306a\u3044\u3002\u6570\u5024\u6839\u62e0\u3092\u660e\u8a18\u3002<\/p>\n<h3>\u53ef\u7528\u6027\u8981\u4ef6\u63d0\u793a \u2192 \u7a3c\u50cd\u7387\u8a08\u7b97 \u2192 \u904b\u7528\u63d0\u6848<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1a\u5e74\u9593\u8a31\u5bb9\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\/\u76ee\u6a19\u7a3c\u50cd\u7387\uff08\u4f8b\uff1a99.95%\uff09\u304c\u63d0\u793a<\/li>\n<li>\u5c0f\u554f2\uff1aMTBF\/MTTR\u304b\u3089\u7a3c\u50cd\u7387\u3092\u8a08\u7b97\u3001\u5197\u9577\u5316\u52b9\u679c\u3092\u8a66\u7b97<\/li>\n<li>\u5c0f\u554f3\uff1a\u76e3\u8996\/\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u3001\u4fdd\u5b88\u6642\u9593\u5e2f\u8a2d\u8a08\u3001SLA\u6539\u5584\u6848\u3092\u63d0\u793a<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>\u7a3c\u50cd\u7387 \u2252 <code>MTBF \/ (MTBF + MTTR)<\/code>\u3001\u5197\u9577\u5316\u306e\u5408\u6210\u7a3c\u50cd\u7387\u3092\u8a08\u7b97<\/li>\n<li>\u7d50\u679c\u304c\u8981\u4ef6\u672a\u9054\u306a\u3089\u5197\u9577\u5316\/\u4fdd\u5b88\u65b9\u5f0f\/\u6545\u969c\u5bfe\u5fdcSOP\u3092\u6539\u5584<\/li>\n<li>SLA\uff08\u691c\u77e5\/\u5fa9\u65e7\u6642\u9593\u3001\u9023\u7d61\u4f53\u5236\uff09\u307e\u3067\u904b\u7528\u9762\u3067\u62c5\u4fdd<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a<strong>\u6570\u5f0f\u2192\u69cb\u6210\u2192\u904b\u7528<\/strong>\u306e\u4e09\u6bb5\u8ad6\u6cd5\u3067\u56de\u7b54\u3002<\/p>\n<h3>\u30b3\u30b9\u30c8\u8a66\u7b97 \u2192 ROI\/TCO\u8a08\u7b97 \u2192 \u7d4c\u55b6\u5224\u65ad<\/h3>\n<p><strong>\u51fa\u984c\u4f8b<\/strong><\/p>\n<ul>\n<li>\u5c0f\u554f1\uff1a\u521d\u671f\u8cbb\u7528\/\u4fdd\u5b88\u8cbb\/\u30af\u30e9\u30a6\u30c9\u5f93\u91cf\u306e\u524d\u63d0\u304c\u63d0\u793a<\/li>\n<li>\u5c0f\u554f2\uff1aTCO\uff08\u4e00\u5b9a\u5e74\u6570\u306e\u7dcf\u8cbb\u7528\uff09\u3084ROI\/\u56de\u53ce\u671f\u9593\u3092\u8a08\u7b97<\/li>\n<li>\u5c0f\u554f3\uff1a\u6295\u8cc7\u5224\u65ad\uff08\u30aa\u30f3\u30d7\u30ec\u7d99\u7d9a\/\u30af\u30e9\u30a6\u30c9\u79fb\u884c\/\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\uff09\u3092\u63d0\u6848<\/li>\n<\/ul>\n<p><strong>\u89e3\u304d\u65b9<\/strong><\/p>\n<ol>\n<li>TCO\u306f<strong>\u521d\u671f\uff0b\u5e74\u6b21\u8cbb\u00d7\u5e74\u6570<\/strong>\u3001\u30af\u30e9\u30a6\u30c9\u306f\u4f7f\u7528\u91cf\u00d7\u5358\u4fa1\u00d7\u671f\u9593\u3067\u6bd4\u8f03<\/li>\n<li>\u4fbf\u76ca\uff08\u904b\u7528\u54c1\u8cea\u30fb\u30b9\u30d4\u30fc\u30c9\u30fb\u30b9\u30b1\u30fc\u30eb\uff09\u3092\u5b9a\u6027\/\u5b9a\u91cf\u3067\u793a\u3059<\/li>\n<li>\u611f\u5ea6\u5206\u6790\uff08\u8ca0\u8377\u5897\u6e1b\u3001\u70ba\u66ff\u3001\u5272\u5f15\uff09\u3092\u4e00\u8a00\u6dfb\u3048\u3066\u610f\u601d\u6c7a\u5b9a\u3092\u88dc\u5f37<\/li>\n<\/ol>\n<p><strong>\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u5358\u306a\u308b\u8a08\u7b97\u3067\u7d42\u308f\u3089\u305b\u305a\u3001<strong>\u7d4c\u55b6\u8996\u70b9\u306e\u793a\u5506<\/strong>\u3092\u6dfb\u3048\u308b\u3002<\/p>\n<h3>\u958b\u767a\u898f\u6a21\u63d0\u793a \u2192 \u5de5\u6570\u8a08\u7b97 \u2192 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