{"id":95948,"date":"2022-03-18T11:16:32","date_gmt":"2022-03-18T02:16:32","guid":{"rendered":"https:\/\/softantenna.com\/blog\/?p=95948"},"modified":"2022-03-18T11:16:32","modified_gmt":"2022-03-18T02:16:32","slug":"windows-server-build-25075-brute-force-hacks","status":"publish","type":"post","link":"https:\/\/softantenna.com\/blog\/windows-server-build-25075-brute-force-hacks\/","title":{"rendered":"Microsoft\u3001Windows Server\u3067\u30d6\u30eb\u30fc\u30c8\u30d5\u30a9\u30fc\u30b9\u653b\u6483\u306b\u5bfe\u3059\u308b\u9632\u5fa1\u3092\u5927\u5e45\u306b\u5f37\u5316"},"content":{"rendered":"<p><img decoding=\"async\" style=\"display:block; margin-left:auto; margin-right:auto;\" src=\"https:\/\/softantenna.com\/blog\/wp-content\/uploads\/2019\/11\/S9Mj5u9.jpg\" alt=\"S9Mj5u9\" title=\"S9Mj5u9.jpg\" border=\"0\" width=\"1280\" height=\"720\" \/><\/p>\n<p>Microsoft\u304cWindows Server Long-Term Servicing Channel (LTSC) Preview\u306e\u65b0\u3057\u3044\u30d3\u30eb\u30c9\u300cWindows Server Preview Build 25075\u300d\u3092\u516c\u958b\u3057\u3001\u30d6\u30eb\u30fc\u30c8\u30d5\u30a9\u30fc\u30b9\u8f9e\u66f8\u653b\u6483\u306b\u5bfe\u3059\u308b\u9632\u5fa1\u3092\u5f37\u5316\u3057\u305f\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f(<a href=\"https:\/\/techcommunity.microsoft.com\/t5\/windows-server-insiders\/announcing-windows-server-preview-build-25075\/m-p\/3259165\">Microsoft Tech Community<\/a>\u3001<a href=\"https:\/\/www.neowin.net\/news\/microsoft-latest-windows-server-build-25075-makes-brute-force-hacks-super-challenging\/\">Neowin<\/a>)\u3002<\/p>\n<p>Microsoft\u306f\u3001NTLM(New Technology LAN Manager)\u307e\u305f\u306f\u30c1\u30e3\u30ec\u30f3\u30b8\/\u30ec\u30b9\u30dd\u30f3\u30b9\u8a8d\u8a3c\u306b\u5931\u6557\u3059\u308b\u305f\u3073\u306b\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u30672\u79d2\u9593\u306e\u9045\u5ef6\u304c\u767a\u751f\u3059\u308b\u8a8d\u8a3c\u30ec\u30fc\u30c8\u30ea\u30df\u30c3\u30bf\u30fc\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3053\u308c\u3092\u9054\u6210\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5358\u7d14\u306a\u4ed5\u7d44\u307f\u3067\u3059\u304c\u3001\u3053\u308c\u307e\u3067\u653b\u6483\u8005\u304c\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u6bce\u79d2300\u56de\u306e\u30d6\u30eb\u30fc\u30c8\u30d5\u30a9\u30fc\u30b9\u306e\u8a66\u884c\u30925\u5206\u9593\u9001\u4fe1\u3057\u3066\u3044\u305f\u3068\u3059\u308b\u3068\u3001\u540c\u3058\u56de\u6570\u306e\u8a66\u884c\u3092\u884c\u3046\u305f\u3081\u306b\u6700\u4f4e\u3067\u308225\u6642\u9593\u304b\u304b\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<blockquote><p>Starting in Windows Insider build 25069.1000.220302-1408 and later on Windows 11 and Windows Server 2022, the SMB Server service now implements a default 2-second delay between each failed NTLM-based authentication. This means that if an attacker previously sent 300 brute force attempts per second from a client for 5 minutes, the same number of attempts would now take 25 hours at a minimum.<\/p>\n<p>Windows Insider build 25069.1000.220302-1408 \u4ee5\u964d\u306e Windows 11 \u304a\u3088\u3073 Windows Server 2022 \u3067\u306f\u3001SMB Server\u30b5\u30fc\u30d3\u30b9\u306b\u3001NTLM \u30d9\u30fc\u30b9\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3059\u308b\u305f\u3073\u306b 2 \u79d2\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u9045\u5ef6\u304c\u5b9f\u88c5\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5f93\u6765\u653b\u6483\u8005\u304c\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u6bce\u79d2300\u56de\u306e\u30d6\u30eb\u30fc\u30c8\u30d5\u30a9\u30fc\u30b9\u653b\u6483\u30925\u5206\u9593\u9001\u4fe1\u3057\u305f\u5834\u5408\u3001\u540c\u3058\u56de\u6570\u306e\u653b\u6483\u306b\u6700\u4f4e\u3067\u308225\u6642\u9593\u304b\u304b\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\n<\/p><\/blockquote>\n<p>\u305f\u3060\u3057\u3001Microsoft\u306f\u3001\u3053\u306e\u5909\u66f4\u306b\u3088\u3063\u3066\u7279\u5b9a\u306e\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3068\u8b66\u544a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u73fe\u6642\u70b9\u3067\u306fInsider\u5411\u3051\u306e\u6a5f\u80fd\u3068\u3057\u3066\u63d0\u4f9b\u3055\u308c\u3066\u304a\u308a\u3001\u7ba1\u7406\u8005\u306f\u7121\u52b9\u306b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u9001\u4fe1\u3059\u308b\u3088\u3046\u30e6\u30fc\u30b6\u30fc\u306b\u8981\u8acb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote><p>This setting is controllable by an administrator and can also be disabled. It's possible the default time and behaviors may change after we evaluate usage in Insiders and take feedback; it's also possible some third-party applications may have problems with this new feature - please use Feedback Hub to file bugs if you find that disabling the feature resolves your application's issue.<\/p>\n<p>\u3053\u306e\u8a2d\u5b9a\u306f\u7ba1\u7406\u8005\u304c\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3067\u304d\u3001\u7121\u52b9\u306b\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002Insiders\u3067\u306e\u4f7f\u7528\u72b6\u6cc1\u3092\u8a55\u4fa1\u3057\u3001\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u53d7\u3051\u305f\u5f8c\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u6642\u9593\u3084\u52d5\u4f5c\u304c\u5909\u66f4\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u4e00\u90e8\u306e\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3053\u306e\u65b0\u6a5f\u80fd\u306b\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u6a5f\u80fd\u3092\u7121\u52b9\u306b\u3059\u308b\u3053\u3068\u3067\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u554f\u984c\u304c\u89e3\u6c7a\u3059\u308b\u5834\u5408\u306f\u3001\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30cf\u30d6\u3092\u4f7f\u3063\u3066\u30d0\u30b0\u5831\u544a\u3092\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002\n<\/p><\/blockquote>\n<p>\u4ee5\u4e0b\u306ePowerShell\u30b3\u30de\u30f3\u30c9\u306b\u3088\u3063\u3066SMB NTLM\u8a8d\u8a3c\u30ec\u30fc\u30c8\u30ea\u30df\u30c3\u30bf\u30fc\u306e\u52d5\u4f5c\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre>\n  Set-SmbServerConfiguration -InvalidAuthenticationDelayTimeInMs n\n<\/pre>\n<p>\u5024\u306f\u30df\u30ea\u79d2\u5358\u4f4d\u3067\u3001100\u306e\u500d\u6570\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u30010-10000\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u30020\u306b\u8a2d\u5b9a\u3059\u308b\u3068\u3053\u306e\u6a5f\u80fd\u306f\u7121\u52b9\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067\u73fe\u5728\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre>\n Get-SmbServerConfiguration\n<\/pre>\n<p>\u73fe\u5728\u3001Windows Server Long-Term Servicing Channel Preview\u306eISO\u30d5\u30a1\u30a4\u30eb(18\u8a00\u8a9e)\u3084\u3001VHDX\u30d5\u30a9\u30fc\u30de\u30c3\u30c8(\u82f1\u8a9e\u306e\u307f)\u304c<a href=\"https:\/\/techcommunity.microsoft.com\/t5\/windows-server-insiders\/announcing-windows-server-preview-build-25075\/m-p\/3259165\">\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9<\/a>\u3067\u304d\u3001\u30d7\u30ec\u30d3\u30e5\u30fc\u30d3\u30eb\u30c9\u3060\u3051\u3067\u4f7f\u7528\u3067\u304d\u308b\u30d7\u30ed\u30c0\u30af\u30c8\u30ad\u30fc\u3082\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>Server Standard: <strong>MFY9F-XBN2F-TYFMP-CCV49-RMYVH<\/strong><\/li>\n<li>Datacenter: <strong>2KNJJ-33Y9H-2GXGX-KMQWH-G6H67<\/strong><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Microsoft\u304cWindows Server Long-Term Servicing Channel (LTSC) Preview\u306e\u65b0\u3057\u3044\u30d3\u30eb\u30c9\u300cWindows Server Preview Build 25075\u300d [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":95949,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[3],"tags":[3298,3287],"class_list":["post-95948","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows","tag-windows","tag-windowsserver"],"_links":{"self":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/95948","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/comments?post=95948"}],"version-history":[{"count":0,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/95948\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media\/95949"}],"wp:attachment":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media?parent=95948"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/categories?post=95948"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/tags?post=95948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}