{"id":13508,"date":"2021-03-13T11:18:45","date_gmt":"2021-03-13T02:18:45","guid":{"rendered":"https:\/\/www.bigriver.jp\/?p=13508"},"modified":"2021-03-13T13:37:50","modified_gmt":"2021-03-13T04:37:50","slug":"alibaba-cloud-security-center-23-routine-work","status":"publish","type":"post","link":"https:\/\/www.bigriver.jp\/?p=13508","title":{"rendered":"Alibaba Cloud Security Center #23 Routine work"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"306\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-103-1024x306.png\" alt=\"\" class=\"wp-image-13509\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-103-1024x306.png 1024w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-103-300x90.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-103-768x229.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-103-940x281.png 940w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-103.png 1078w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<p>\u4eca\u9031\u3001\u4ed5\u4e8b\u306b\u304b\u307e\u3051\u3066\u3044\u305f\u3089 Secure Score \u304c 85 \u307e\u3067\u4f4e\u4e0b\u3057\u3066\u3044\u307e\u3057\u305f\u3002\u3000\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e8b\u6545\u304c\u8d77\u304d\u308b\u524d\u306b Security Center \u304b\u3089\u3069\u306e\u3088\u3046\u306a\u30ea\u30b9\u30af\u304c\u3042\u308b\u306e\u304b\u78ba\u8a8d\u3057\u3001Security Center \u304b\u3089\u63d0\u4f9b\u3055\u308c\u308b\u5bfe\u51e6\u65b9\u6cd5\u3092\u5b9f\u65bd\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69fb45ee36a04\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\" style='display:none' id=\"ez-toc-cssicon-toggle-item-69fb45ee36a04\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.bigriver.jp\/?p=13508\/#Security_Risks_%E3%81%AE%E7%A2%BA%E8%AA%8D\" >Security Risks \u306e\u78ba\u8a8d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.bigriver.jp\/?p=13508\/#Attacks_%E3%81%B8%E3%81%AE%E5%AF%BE%E5%BF%9C\" >Attacks \u3078\u306e\u5bfe\u5fdc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.bigriver.jp\/?p=13508\/#Config_Assessment_Risks_%E3%81%B8%E3%81%AE%E5%AF%BE%E5%BF%9C\" >Config Assessment Risks \u3078\u306e\u5bfe\u5fdc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.bigriver.jp\/?p=13508\/#%E3%81%BE%E3%81%A8%E3%82%81\" >\u307e\u3068\u3081<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-sgb-headings sgb-heading\" id=\"i-0\"><span class=\"ez-toc-section\" id=\"Security_Risks_%E3%81%AE%E7%A2%BA%E8%AA%8D\"><\/span><div class=\"sgb-heading__inner sgb-heading--type2\" style=\"background-color:#ffb36b;border-color:transparent;font-size:1.2em\"><span class=\"sgb-heading__text\" style=\"color:#FFF\">Security Risks \u306e\u78ba\u8a8d<\/span><\/div><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u307e\u305a\u306f\u3069\u306e\u3088\u3046\u306a\u30ea\u30b9\u30af\u304c\u3042\u308b\u306e\u304b\u78ba\u8a8d\u3057\u307e\u3059\u3002\u5927\u304d\u304f3\u3064\u306e\u30ea\u30b9\u30af\u304c\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u30001\u3064\u76ee\u306f\u8106\u5f31\u6027 (Unchecked Urgent Vulnerabilities)\u30012\u3064\u76ee\u306f Alibaba Cloud \u306e\u30d7\u30ed\u30c0\u30af\u30c8\u306e\u8a2d\u5b9a\u306b\u95a2\u3059\u308b\u30ea\u30b9\u30af(Config Assessment Risks)\u30013\u3064\u76ee\u306f Attacks \u3068\u3044\u3046\u3053\u3068\u3067\u5916\u90e8\u304b\u3089\u306e\u653b\u6483\u306e\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"577\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-104-1024x577.png\" alt=\"\" class=\"wp-image-13511\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-104-1024x577.png 1024w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-104-300x169.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-104-768x433.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-104-940x529.png 940w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-104.png 1083w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-sgb-headings sgb-heading\" id=\"i-1\"><span class=\"ez-toc-section\" id=\"Attacks_%E3%81%B8%E3%81%AE%E5%AF%BE%E5%BF%9C\"><\/span><div class=\"sgb-heading__inner sgb-heading--type2\" style=\"background-color:#ffb36b;border-color:transparent;font-size:1.2em\"><span class=\"sgb-heading__text\" style=\"color:#FFF\">Attacks \u3078\u306e\u5bfe\u5fdc<\/span><\/div><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u8106\u5f31\u6027\u306e\u5bfe\u5fdc\u306f\u3053\u308c\u307e\u3067\u4f55\u5ea6\u3082\u7d39\u4ecb\u3057\u3066\u3044\u308b\u306e\u3067\u5272\u611b\u3057\u307e\u3059\u3002\u3000\u307e\u305a\u306f Attacks \u304b\u3089\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>ECS \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\uff08Ubuntu) \u3078\u306e SSH Brute force \u3067\u3059\u3002\u3000\u57fa\u672c\u7684\u306b\u306f Blocked \u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u306a\u306e\u3067\u5b9f\u5bb3\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"518\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-105-1024x518.png\" alt=\"\" class=\"wp-image-13512\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-105-1024x518.png 1024w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-105-300x152.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-105-768x388.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-105-1536x776.png 1536w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-105-940x475.png 940w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-105.png 1644w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>SSH Brute force \u306f 2\/27 \u9803\u304b\u3089\u59cb\u307e\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u3053\u306e\u30d6\u30ed\u30b0\u3092\u30db\u30b9\u30c8\u3059\u308b Web \u30b5\u30fc\u30d0\u306e\u524d\u6bb5\u306b Alibaba Cloud Server Load Balancer \u3092\u8ffd\u52a0\u3057\u307e\u3057\u305f\u3002\u3000Server Load Balancer \u3092\u8ffd\u52a0\u3057\u305f\u3053\u3068\u3067 Server Load Balancer \u304c\u516c\u958b\u3057\u3066\u3044\u308b Public IP \u3078\u306e SSH \u63a5\u7d9a\u304c\u4eca\u56de\u691c\u77e5\u3055\u308c\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u3000\u53ef\u80fd\u6027\u3068\u3057\u305f\u306e\u306f\u3001Server Load Balancer \u306e Listener \u3068\u3057\u3066\u306f 80 \u3068 443 \u306e TCP port \u3057\u304b Listen \u3057\u3066\u3044\u306a\u3044\u305f\u3081\u3067\u3059\u3002\u3000<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"437\" height=\"409\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-106.png\" alt=\"\" class=\"wp-image-13513\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-106.png 437w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-106-300x281.png 300w\" sizes=\"auto, (max-width: 437px) 100vw, 437px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u5bfe\u7b56\u3068\u3057\u3066 Server Load Balancer \u306e\u8a2d\u5b9a\u3092\u9032\u3081\u307e\u3059\u3002 Access Control \u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-107.png\" alt=\"\" class=\"wp-image-13515\" width=\"792\" height=\"424\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-107.png 792w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-107-300x161.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-107-768x411.png 768w\" sizes=\"auto, (max-width: 792px) 100vw, 792px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u305f\u3060\u3001 Server Load Balancer \u306e ACL \u306f IP Address \u306e\u5b9a\u7fa9\u3068 Listener \u306e\u7d10\u4ed8\u3051\u3068\u306a\u308a\u3001\u4eca\u56de\u3084\u308a\u305f\u3044 SSH \u901a\u4fe1\u3092\u660e\u793a\u7684\u306b Block \u3059\u308b\u3068\u3044\u3046\u4f7f\u3044\u65b9\u306f\u51fa\u6765\u306a\u3044\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u3000Access Control \u306e\u8a2d\u5b9a\u306f\u3068\u308a\u3084\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"792\" height=\"424\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-108.png\" alt=\"\" class=\"wp-image-13517\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-108.png 792w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-108-300x161.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-108-768x411.png 768w\" sizes=\"auto, (max-width: 792px) 100vw, 792px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>ECS \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3078\u306e Security Group \u3067\u306f SSH \u306e\u63a5\u7d9a\u5143\u306f\u9650\u5b9a\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u3000\u6700\u521d\u306f SSH Brute Force \u306a\u3089\u5927\u3057\u305f\u8a71\u3067\u306f\u306a\u3044\u3068\u8003\u3048\u305f\u306e\u3067\u3059\u304c\u3001\u3069\u3046\u3057\u3066\u3053\u306e SSH \u63a5\u7d9a\u304c\u767a\u751f\u3059\u308b\u306e\u304b\uff08\u3067\u304d\u308b\u306e\u304b\uff09\u308f\u304b\u3089\u306a\u304f\u306a\u3063\u3066\u304d\u307e\u3057\u305f\u3002\u3000\u30bf\u30a4\u30df\u30f3\u30b0\u3068\u3057\u3066\u306f Server Load Balancer \u3092\u8ffd\u52a0\u3057\u305f\u3068\u304d\u304b\u3089\u3067\u3059\u3002\u3000\u4e00\u65b9\u3001ECS\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u306e Security Group \u3067\u306f\u6307\u5b9a\u306eIP\u4ee5\u5916\u306eSSH\u306f\u906e\u65ad\u3057\u3066\u3044\u307e\u3059\u3002\u3000\u305d\u3057\u3066 Server Load Balancer \u3067\u306f Listener \u3068\u3057\u3066 80\/443 \u3057\u304b\u516c\u958b\u3057\u3066\u3044\u306a\u3044\u72b6\u6cc1\u3067\u3059\u3002\u3000\u7406\u8ad6\u7684\u306b\u306f ECS \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3078\u306e SSH \u63a5\u7d9a\u3067\u304d\u308b\u7d4c\u8def\u306f\u5b58\u5728\u3057\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u8abf\u67fb\u3092\u7d9a\u3051\u307e\u3059\u3002\u3000\u307e\u305a\u306fECS \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u30ed\u30b0\u30a4\u30f3\u3057\u3001\u5b9f\u969b\u306b SSH \u63a5\u7d9a\u306e\u8a66\u307f\u304c\u3042\u3063\u305f\u306e\u304b\u78ba\u8a8d\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002 \u3057\u304b\u3057\u3001\/var\/log\/auth \u306b\u306f SSH \u306e\u63a5\u7d9a\u306e\u30ed\u30b0\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3002\u3000Security Center \u3067\u306f\u4ee5\u4e0b\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u306e\u3068\u304a\u308a\u4eca\u65e5\u306e\u671d\u300104:01:15 \u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u3068\u306e\u3053\u3068\u3067\u3059\u304c\u3001ECS \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9(Ubuntu)\u3078\u306e\u5b9f\u969b\u306e SSH \u63a5\u7d9a\u306f\u884c\u308f\u308c\u3066\u3044\u306a\u3044\u3088\u3046\u3067\u3059\u3002\u3000\u306a\u304a\u30012\u3064\u306e IP Address \u300123.129.64.201 \u3068 23.129.64.202 \u3001\u306fTor \u7d4c\u7531\u3067SSH Brute Force \u3092\u304b\u3051\u3066\u304d\u305f\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"840\" height=\"209\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-109.png\" alt=\"\" class=\"wp-image-13521\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-109.png 840w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-109-300x75.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-109-768x191.png 768w\" sizes=\"auto, (max-width: 840px) 100vw, 840px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u539f\u56e0\u306e\u4eee\u8aac\u3068\u3057\u3066\u3001Server Load Balancer \u306e Public IP \u30a2\u30c9\u30ec\u30b9\u3078\u306e SSH Brute Force \u3092 Security Center \u304c\u691c\u77e5\u3057\u305f\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3000<\/p>\n\n\n\n<p>\u5b9f\u9a13\u3068\u3057\u3066 Alibaba Cloud \u306e\u5916\u304b\u3089\uff08 SSH \u30a2\u30af\u30bb\u30b9\u3092\u8a31\u53ef\u3057\u3066\u3044\u306a\u3044IP\u30a2\u30c9\u30ec\u30b9\u3088\u308a\uff09\u3001Server Load Balancer \u306b SSH \u3067\u63a5\u7d9a\u3092\u8a66\u307f\u307e\u3059\u3002\u3000\u305d\u306e\u7d50\u679c\u3068\u3057\u3066 Security Center \u306b SSH Brute Force \u306e\u30ed\u30b0\u304c\u6b8b\u308b\u304b\u3069\u3046\u304b\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u63a5\u7d9a\u30c6\u30b9\u30c8\u306f\u3053\u306e\u30d6\u30ed\u30b0\u3092\u66f8\u3044\u3066\u3044\u3044\u308b Chromebook \u304b\u3089 Windows Virtual Desktop \u306e Azure \u4e0a\u306e Windows 10 \u306b\u63a5\u7d9a\u3057\u3001 Tera Term \u304b\u3089\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"980\" height=\"588\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-120.png\" alt=\"\" class=\"wp-image-13536\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-120.png 980w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-120-300x180.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-120-768x461.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-120-940x564.png 940w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u63a5\u7d9a\u5148\u306e Server Load Balancer \u306f SSH \u306e TCP port 22 \u3092 Listen \u3057\u3066\u3044\u306a\u3044\u305f\u3081\u3001Connection timed out \u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"980\" height=\"588\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-121.png\" alt=\"\" class=\"wp-image-13537\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-121.png 980w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-121-300x180.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-121-768x461.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-121-940x564.png 940w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Security Center \u3092\u78ba\u8a8d\u3057\u307e\u3059\u304c\u3001\u4eca\u671d\u65b9\u306e\u30ed\u30b0\u3057\u304b\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u3002\u3000\u5148\u7a0b\u884c\u3063\u305f\u5f53\u65b9\u306b\u3088\u308b\u30c6\u30b9\u30c8\u306e\u63a5\u7d9a\u306f\u307f\u3042\u305f\u308a\u307e\u305b\u3093\u3002\u3000\u3000<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"177\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-122-1024x177.png\" alt=\"\" class=\"wp-image-13538\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-122-1024x177.png 1024w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-122-300x52.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-122-768x132.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-122-1536x265.png 1536w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-122-940x162.png 940w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-122.png 1623w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u8abf\u3079\u3089\u308c\u308b\u3053\u3068\u306f\u8abf\u3079\u305f\u306e\u3067\u3059\u304c\u3001\u672c\u6765\u3001SSH Brute Force \u306f\u8d77\u3053\u308a\u5f97\u306a\u3044\uff08SSH\u63a5\u7d9a\u3067\u304d\u308b\u7d4c\u8def\u304c\u306a\u3044\uff09\u306b\u3082\u304b\u304b\u308f\u3089\u305a Security Center \u3067 Attack \u691c\u77e5\u3055\u308c\u305f\u539f\u56e0\u306f\u308f\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u3000<\/p>\n\n\n\n<p>\u904e\u53bb\u306b Internet \u306b SSH \u3092\u516c\u958b\u3057\u3066\u3044\u305f\u3068\u304d\u306f1\u65e5\u3067\u6570\u767e\u3001\u6570\u5343\u306e\u6570\u3067 Brute Force \u304c\u691c\u77e5\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u3000\u4ee5\u4e0b\u3001\u904e\u53bb\u306e <a href=\"https:\/\/www.bigriver.jp\/?p=6213\">Security Center \u306e\u8a18\u4e8b<\/a>\u3067\u3059\u304c\u30011\u65e5\u306b 883 \u4ef6\u3092\u691c\u51fa\u3057\u3066\u3044\u307e\u3059\u3002\u3000<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"415\" height=\"270\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-124.png\" alt=\"\" class=\"wp-image-13540\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-124.png 415w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-124-300x195.png 300w\" sizes=\"auto, (max-width: 415px) 100vw, 415px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u4eca\u56de\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a1\u30f6\u6708\u306717\u4ef6\u3067\u3059\u3002\u3000\u60f3\u50cf\u306e\u57df\u3092\u51fa\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001Security Group \u306e\u30eb\u30fc\u30eb\u304c\u4e00\u6642\u7684\u306b\u958b\u653e\u3055\u308c\u3066\u305d\u306e\u6642\u306b SSH \u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u306e\u304b\uff08\u3053\u306e\u5834\u5408\u3001ECS \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e Ubuntu \u306b\u30ed\u30b0\u306f\u6b8b\u308b\u306f\u305a\u3060\u304c\u6b8b\u3063\u3066\u3044\u306a\u3044\uff09\u3001Security Center \u306e\u8aa4\u691c\u77e5\u306a\u306e\u304b\u3001\u3088\u304f\u308f\u304b\u3089\u306a\u3044\u72b6\u6cc1\u3067\u3059\u3002\u3000\u307e\u3042\u3001Server Load Balancer \u3092\u8ffd\u52a0\u3057\u305f\u3042\u3068\u304b\u3089\u306a\u306e\u3067\u79c1\u304c\u306a\u306b\u304b\u8a2d\u5b9a\u3092\u6f0f\u3089\u3057\u3066\u3044\u308b\u306e\u304b\u3082\u3067\u3059\u3002\u3000<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"877\" height=\"474\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-123.png\" alt=\"\" class=\"wp-image-13539\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-123.png 877w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-123-300x162.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-123-768x415.png 768w\" sizes=\"auto, (max-width: 877px) 100vw, 877px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-sgb-headings sgb-heading\" id=\"i-2\"><span class=\"ez-toc-section\" id=\"Config_Assessment_Risks_%E3%81%B8%E3%81%AE%E5%AF%BE%E5%BF%9C\"><\/span><div class=\"sgb-heading__inner sgb-heading--type2\" style=\"background-color:#ffb36b;border-color:transparent;font-size:1.2em\"><span class=\"sgb-heading__text\" style=\"color:#FFF\">Config Assessment Risks \u3078\u306e\u5bfe\u5fdc<\/span><\/div><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u307e\u305a\u306f\u3001 Security Center \u304b\u3089\u63d0\u793a\u3055\u308c\u305f\u30ea\u30b9\u30af\u306e\u5185\u5bb9\u3092\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"540\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-110-1024x540.png\" alt=\"\" class=\"wp-image-13522\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-110-1024x540.png 1024w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-110-300x158.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-110-768x405.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-110-940x496.png 940w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-110.png 1143w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>1\u3064\u76ee\u306e\u3000OSS \u2013 Bucket Access Permissions \u306f Alibaba Cloud \u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30b9\u30c8\u30ec\u30fc\u30b8\u3068\u306a\u308b OSS \u304c\u30d1\u30d6\u30ea\u30c3\u30af\u306b\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u8a2d\u5b9a\u306b\u95a2\u3059\u308b\u8b66\u544a\u3067\u3059\u3002\u3000\u4e16\u306e\u4e2d\u306e\u30cb\u30e5\u30fc\u30b9\u3068\u3057\u3066\u3001AWS \u306e S3 \u306b\u3064\u3044\u3066\u610f\u56f3\u305b\u305a\u6a5f\u5bc6\u60c5\u5831\u3092 S3 \u3067\u516c\u958b\u3057\u3066\u3044\u305f\u4e8b\u6545\u306f\u3088\u304f\u3042\u308b\u3068\u601d\u3044\u307e\u3059\u3002\u3000\u540c\u3058\u985e\u306e\u8a71\u3067\u3059\u3002\u3000\u305f\u3060\u3001\u4eca\u56de\u306f\u610f\u56f3\u7684\u306b OSS \u3092 Static \u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u516c\u958b\u3059\u308b WWW \u30b5\u30fc\u30d0\u3068\u3057\u3066\u30c6\u30b9\u30c8\u3057\u3066\u3044\u305f\u3068\u3053\u308d\u3067\u3057\u305f\u3002\u3000\u306a\u306e\u3067\u3053\u3061\u3089\u306f Whitelist \u3068\u3057\u3066\u5bfe\u51e6\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"540\" height=\"261\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-111.png\" alt=\"\" class=\"wp-image-13523\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-111.png 540w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-111-300x145.png 300w\" sizes=\"auto, (max-width: 540px) 100vw, 540px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>2\u3064\u76ee\u306f Server Load Balancer \u306e\u30ed\u30b0\u3092\u6709\u52b9\u5316\u3057\u3088\u3046\u3068\u306e Security Center \u304b\u3089\u306e\u63d0\u8a00\u3067\u3059\u3002\u3000\u4e0a\u306e SSH Brute Force \u306e\u8abf\u67fb\u3067\u3082 Server Load Balancer \u306e\u30ed\u30b0\u304c\u3042\u308c\u3070\u3088\u308a\u7c21\u5358\u306b\u8abf\u67fb\u304c\u9032\u3093\u3060\u3068\u3044\u3046\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u3000\u3053\u308c\u306f\u6709\u52b9\u5316\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"752\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-112-1024x752.png\" alt=\"\" class=\"wp-image-13524\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-112-1024x752.png 1024w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-112-300x220.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-112-768x564.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-112-940x690.png 940w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-112.png 1083w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Server Load Balancer \u306e\u8a2d\u5b9a\u753b\u9762\u304b\u3089 <strong>Access Logs<\/strong> \u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"246\" height=\"190\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-114.png\" alt=\"\" class=\"wp-image-13526\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>RAM \u3067\u306e\u6a29\u9650\u4ed8\u4e0e\u3092\u9032\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"345\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-115-1024x345.png\" alt=\"\" class=\"wp-image-13527\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-115-1024x345.png 1024w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-115-300x101.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-115-768x259.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-115-940x317.png 940w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-115.png 1343w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u30ed\u30b0\u53d6\u5f97\u304c\u6709\u52b9\u5316\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"272\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-116-1024x272.png\" alt=\"\" class=\"wp-image-13528\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-116-1024x272.png 1024w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-116-300x80.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-116-768x204.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-116-1536x408.png 1536w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-116-940x250.png 940w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-116.png 1554w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u3042\u3068\u306f\u30ed\u30b0\u3092\u4fdd\u7ba1\u3059\u308b Log Service \u306e Project \u3068 Logstore \u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u3000\u5b9f\u969b\u306e\u30ed\u30b0\u306e\u78ba\u8a8d\u306f Log Service \u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"396\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-117.png\" alt=\"\" class=\"wp-image-13529\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-117.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-117-300x155.png 300w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>3\u3064\u76ee\u306f OSS versioning \u306e\u8a2d\u5b9a\u3067\u3059\u3002\u3000\u3053\u308c\u306f OSS \u306e versioninig 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width=\"1024\" height=\"535\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-118-1024x535.png\" alt=\"\" class=\"wp-image-13532\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-118-1024x535.png 1024w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-118-300x157.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-118-768x401.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-118-940x491.png 940w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-118.png 1098w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-sgb-headings sgb-heading\" id=\"i-3\"><span class=\"ez-toc-section\" id=\"%E3%81%BE%E3%81%A8%E3%82%81\"><\/span><div class=\"sgb-heading__inner sgb-heading--type2\" style=\"background-color:#ffb36b;border-color:transparent;font-size:1.2em\"><span class=\"sgb-heading__text\" style=\"color:#FFF\">\u307e\u3068\u3081<\/span><\/div><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6700\u7d42\u7684\u306b\u306f Secure Score \u306f 94 \u307e\u3067\u56de\u5fa9\u3057\u307e\u3057\u305f\u3002\u3000\u6b8b\u3063\u305f\u30ea\u30b9\u30af\u306f 1\u4ef6\u3067\u3059\u304c\u3001\u89e3\u6c7a\u3067\u304d\u306a\u304b\u3063\u305f SSH Brute Force \u3067\u3059\u3002\u3000\u307e\u3042\u3001\u3053\u3061\u3089\u306f\u5b9f\u969b\u306b\u306f SSH \u63a5\u7d9a\u51fa\u6765\u306a\u3044\u72b6\u614b\u3067\u5b9f\u8cea\u306e\u30ea\u30b9\u30af\u306f\u554f\u984c\u306b\u306a\u3089\u306a\u3044\u3053\u3068\u3001\u691c\u77e5\u3055\u308c\u308b\u7406\u7531\u304c\u4e0d\u660e\u306a\u306e\u3067\u3068\u308a\u3042\u3048\u305a\u653e\u7f6e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"315\" src=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-125-1024x315.png\" alt=\"\" class=\"wp-image-13543\" srcset=\"https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-125-1024x315.png 1024w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-125-300x92.png 300w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-125-768x236.png 768w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-125-940x289.png 940w, https:\/\/www.bigriver.jp\/wp-content\/uploads\/2021\/03\/image-125.png 1100w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u4ee5\u4e0a<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u9031\u3001\u4ed5\u4e8b\u306b\u304b\u307e\u3051\u3066\u3044\u305f\u3089 Secure Score \u304c 85 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