{"id":51051,"date":"2024-12-03T08:32:30","date_gmt":"2024-12-03T00:32:30","guid":{"rendered":"https:\/\/fwq.ai\/blog\/51051\/"},"modified":"2024-12-03T08:32:30","modified_gmt":"2024-12-03T00:32:30","slug":"%e5%a6%82%e4%bd%95%e5%ba%94%e5%af%b9linux%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%9a%84%e6%8b%92%e7%bb%9d%e6%9c%8d%e5%8a%a1%e6%94%bb%e5%87%bb-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/51051\/","title":{"rendered":"\u5982\u4f55\u5e94\u5bf9Linux\u670d\u52a1\u5668\u7684\u62d2\u7edd\u670d\u52a1\u653b\u51fb"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u5e94\u5bf9Linux\u670d\u52a1\u5668\u7684\u62d2\u7edd\u670d\u52a1\u653b\u51fb<\/h1>\n<p>\u5728IT\u884c\u4e1a\u8fd9\u4e2a\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u5f88\u5feb\u7684\u884c\u4e1a\uff0c\u53ea\u6709\u4e0d\u505c\u6b62\u7684\u5b66\u4e60\uff0c\u624d\u4e0d\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u5982\u679c\u4f60\u662f\u6587\u7ae0\u5b66\u4e60\u8005\uff0c\u90a3\u4e48\u672c\u6587\u300a\u5982\u4f55\u5e94\u5bf9Linux\u670d\u52a1\u5668\u7684\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u300b\u5c31\u5f88\u9002\u5408\u4f60\uff01\u672c\u7bc7\u5185\u5bb9\u4e3b\u8981\u5305\u62ec##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n<p>\u5982\u4f55\u5e94\u5bf9Linux\u670d\u52a1\u5668\u7684\u62d2\u7edd\u670d\u52a1\u653b\u51fb<\/p>\n<p>\u62d2\u7edd\u670d\u52a1\u653b\u51fb\uff08Denial of Service, DoS\uff09\u662f\u4e00\u79cd\u901a\u8fc7\u5411\u76ee\u6807\u670d\u52a1\u5668\u53d1\u9001\u5927\u91cf\u8bf7\u6c42\u6216\u5229\u7528\u6f0f\u6d1e\u7b49\u624b\u6bb5\uff0c\u4ee5\u4f7f\u670d\u52a1\u5668\u65e0\u6cd5\u6b63\u5e38\u63d0\u4f9b\u670d\u52a1\u7684\u653b\u51fb\u65b9\u6cd5\u3002Linux\u670d\u52a1\u5668\u4f5c\u4e3a\u7f51\u7edc\u73af\u5883\u4e2d\u6700\u5e38\u7528\u7684\u670d\u52a1\u5668\u7cfb\u7edf\u4e4b\u4e00\uff0c\u4e5f\u662f\u9ed1\u5ba2\u4eec\u7ecf\u5e38\u653b\u51fb\u7684\u76ee\u6807\u4e4b\u4e00\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5e94\u5bf9Linux\u670d\u52a1\u5668\u7684\u62d2\u7edd\u670d\u52a1\u653b\u51fb\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p>\u4e00\u3001\u914d\u7f6e\u7f51\u7edc\u9632\u706b\u5899<\/p>\n<p>Linux\u670d\u52a1\u5668\u7684\u7b2c\u4e00\u9053\u9632\u7ebf\u662f\u7f51\u7edc\u9632\u706b\u5899\uff0c\u53ef\u4ee5\u4f7f\u7528iptables\u7b49\u5de5\u5177\u8fdb\u884c\u914d\u7f6e\u3002\u901a\u8fc7\u914d\u7f6e\u7f51\u7edc\u9632\u706b\u5899\uff0c\u53ef\u4ee5\u9650\u5236\u67d0\u4e9bIP\u5730\u5740\u6216IP\u5730\u5740\u6bb5\u7684\u8bbf\u95ee\uff0c\u6216\u8005\u9650\u5236\u67d0\u4e9b\u7279\u5b9a\u7684\u7f51\u7edc\u534f\u8bae\u7684\u8bbf\u95ee\u3002\u4ee5\u4e0b\u793a\u4f8b\u4ee3\u7801\u5c55\u793a\u4e86\u5982\u4f55\u914d\u7f6eiptables\u6765\u9650\u5236\u67d0\u4e2aIP\u5730\u5740\u6bb5\u7684\u8bbf\u95ee\uff1a<\/p>\n<pre># \u5141\u8bb8\u6240\u6709\u6d41\u91cf\u901a\u8fc7\niptables -P INPUT ACCEPT\niptables -P OUTPUT ACCEPT\niptables -P FORWARD ACCEPT\n\n# \u6e05\u7a7a\u89c4\u5219\u94fe\niptables -F\niptables -X\n\n# \u5141\u8bb8\u672c\u5730\u56de\u73af\niptables -A INPUT -i lo -j ACCEPT\n\n# \u5141\u8bb8\u5df2\u5efa\u7acb\u7684\u8fde\u63a5\u901a\u8fc7\niptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT\n\n# \u5141\u8bb8\u67d0\u4e2aIP\u5730\u5740\u6bb5\u7684\u8bbf\u95ee\niptables -A INPUT -s 192.168.0.0\/24 -j ACCEPT\n\n# \u62d2\u7edd\u6240\u6709\u5176\u4ed6\u7684\u6d41\u91cf\niptables -P INPUT DROP<\/pre>\n<p>\u5728\u914d\u7f6e\u7f51\u7edc\u9632\u706b\u5899\u65f6\uff0c\u9700\u8981\u8003\u8651\u670d\u52a1\u5668\u6240\u9700\u7684\u6b63\u5e38\u6d41\u91cf\uff0c\u5e76\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8fdb\u884c\u76f8\u5e94\u7684\u914d\u7f6e\u3002<\/p>\n<p>\u4e8c\u3001\u914d\u7f6e\u8f6f\u4ef6\u9632\u706b\u5899<\/p>\n<p>\u9664\u4e86\u7f51\u7edc\u9632\u706b\u5899\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u8f6f\u4ef6\u9632\u706b\u5899\u6765\u589e\u52a0\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002\u5e38\u89c1\u7684\u8f6f\u4ef6\u9632\u706b\u5899\u6709Fail2Ban\u548cModSecurity\u7b49\u3002Fail2Ban\u53ef\u4ee5\u6839\u636e\u914d\u7f6e\u7684\u89c4\u5219\uff0c\u5728\u4e00\u5b9a\u65f6\u95f4\u5185\u6682\u65f6\u5730\u7981\u6b62\u6765\u81ea\u67d0\u4e2aIP\u5730\u5740\u7684\u8bbf\u95ee\uff0c\u4ece\u800c\u9632\u6b62\u66b4\u529b\u7834\u89e3\u6216\u6076\u610f\u653b\u51fb\u3002ModSecurity\u5219\u662f\u4e00\u4e2aWeb\u5e94\u7528\u7a0b\u5e8f\u9632\u706b\u5899\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u89c4\u5219\u6765\u963b\u6b62\u6f5c\u5728\u7684\u653b\u51fb\u884c\u4e3a\u3002\u4ee5\u4e0b\u662fFail2Ban\u7684\u793a\u4f8b\u914d\u7f6e\uff1a<\/p>\n<pre>[DEFAULT]\nbantime = 3600\nfindtime = 600\nmaxretry = 5\n\n[sshd]\nenabled = true\nport = ssh\nfilter = sshd\nlogpath = \/var\/log\/auth.log<\/pre>\n<p>\u5728\u4ee5\u4e0a\u793a\u4f8b\u914d\u7f6e\u4e2d\uff0cFail2Ban\u4f1a\u76d1\u63a7sshd\u670d\u52a1\u7684\u65e5\u5fd7\u6587\u4ef6\uff0c\u5e76\u572810\u5206\u949f\u5185\u53d1\u751f5\u6b21\u4ee5\u4e0a\u7684\u767b\u5f55\u5931\u8d25\u540e\uff0c\u6682\u65f6\u5730\u7981\u6b62\u6765\u81ea\u8be5IP\u5730\u5740\u7684\u8bbf\u95ee\u3002<\/p>\n<p>\u4e09\u3001\u914d\u7f6eDoS\u9632\u62a4\u7cfb\u7edf<\/p>\n<p>\u4e3a\u4e86\u5e94\u5bf9\u62d2\u7edd\u670d\u52a1\u653b\u51fb\uff0c\u53ef\u4ee5\u914d\u7f6e\u4e13\u95e8\u7684DoS\u9632\u62a4\u7cfb\u7edf\u6765\u76d1\u63a7\u670d\u52a1\u5668\u7684\u6d41\u91cf\uff0c\u5e76\u8fc7\u6ee4\u6389\u5f02\u5e38\u7684\u6216\u6076\u610f\u7684\u8bf7\u6c42\u3002\u5e38\u89c1\u7684DoS\u9632\u62a4\u7cfb\u7edf\u6709ModEvasive\u548cDOSarrest\u7b49\u3002\u4ee5\u4e0b\u662fModEvasive\u7684\u793a\u4f8b\u914d\u7f6e\uff1a<\/p>\n<pre>&lt;IfModule mod_evasive24.c&gt;\n    DOSHashTableSize    3097\n    DOSPageCount        5\n    DOSSiteCount        100\n    DOSPageInterval     2\n    DOSSiteInterval     1\n    DOSBlockingPeriod   10\n    DOSLogDir           \"\/var\/log\/httpd\/modevasive\"\n\n    &lt;IfModule mod_ssl.c&gt;\n        DOSBlockingList     \"\/var\/log\/httpd\/mod_evasive\/blocked_ips_ssl.db\"\n    &lt;\/IfModule&gt;\n    &lt;IfModule !mod_ssl.c&gt;\n        DOSBlockingList     \"\/var\/log\/httpd\/mod_evasive\/blocked_ips_nonssl.db\"\n    &lt;\/IfModule&gt;\n&lt;\/IfModule&gt;<\/pre>\n<p>\u5728\u4ee5\u4e0a\u793a\u4f8b\u914d\u7f6e\u4e2d\uff0cModEvasive\u4f1a\u57282\u79d2\u5185\u53d1\u751f5\u6b21\u4ee5\u4e0a\u7684\u8bbf\u95ee\u8bf7\u6c42\u62161\u79d2\u5185\u4ece\u540c\u4e00IP\u5730\u5740\u53d1\u751f100\u6b21\u4ee5\u4e0a\u7684\u8bbf\u95ee\u8bf7\u6c42\u7b49\u60c5\u51b5\u4e0b\uff0c\u81ea\u52a8\u5c4f\u853d\u8be5IP\u5730\u5740\u7684\u8bbf\u95ee\uff0c\u6301\u7eed10\u79d2\u949f\u3002<\/p>\n<p>\u603b\u7ed3<\/p>\n<p>\u5bf9\u4e8eLinux\u670d\u52a1\u5668\u7684\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u9632\u62a4\uff0c\u9700\u8981\u7efc\u5408\u4f7f\u7528\u7f51\u7edc\u9632\u706b\u5899\u3001\u8f6f\u4ef6\u9632\u706b\u5899\u548cDoS\u9632\u62a4\u7cfb\u7edf\u7b49\u591a\u79cd\u624b\u6bb5\u3002\u5408\u7406\u914d\u7f6e\u548c\u4f7f\u7528\u8fd9\u4e9b\u9632\u62a4\u673a\u5236\uff0c\u80fd\u591f\u6709\u6548\u5730\u4fdd\u62a4\u670d\u52a1\u5668\u514d\u53d7\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u7684\u4fb5\u5bb3\u3002<\/p>\n<p>\u4ee5\u4e0a\u662f\u5982\u4f55\u5e94\u5bf9Linux\u670d\u52a1\u5668\u7684\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u7684\u4ecb\u7ecd\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e00\u4e9b\u914d\u7f6e\u793a\u4f8b\u3002\u5e0c\u671b\u80fd\u591f\u5bf9\u60a8\u7684\u670d\u52a1\u5668\u5b89\u5168\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u300a\u5982\u4f55\u5e94\u5bf9Linux\u670d\u52a1\u5668\u7684\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u9632\u706b\u5899 (Firewall),\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u5e94\u5bf9\uff1a,\u8d44\u6e90\u7ba1\u7406 (Resource Management),\u6d41\u91cf\u8fc7\u6ee4 (Traffic Filtering)\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n<dl>\n<dt><\/dt>\n<dd>\n   \u9632\u6b62\u6076\u610f\u8f6f\u4ef6\u5165\u4fb5\uff1a\u5728Linux\u670d\u52a1\u5668\u4e0a\u4fdd\u62a4\u60a8\u7684\u7cfb\u7edf\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u5e94\u5bf9Linux\u670d\u52a1\u5668\u7684\u62d2\u7edd\u670d\u52a1\u653b\u51fb \u5728IT\u884c\u4e1a\u8fd9\u4e2a\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u5f88\u5feb\u7684\u884c\u4e1a\uff0c\u53ea\u6709\u4e0d\u505c\u6b62\u7684\u5b66\u4e60\uff0c\u624d\u4e0d\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u5982\u679c\u4f60\u662f\u6587\u7ae0\u5b66\u4e60\u8005\uff0c\u90a3\u4e48\u672c\u6587\u300a\u5982\u4f55\u5e94\u5bf9Linux\u670d\u52a1\u5668\u7684\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u300b\u5c31\u5f88\u9002\u5408\u4f60\uff01\u672c\u7bc7\u5185\u5bb9\u4e3b\u8981\u5305\u62ec##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01 \u5982\u4f55\u5e94\u5bf9Linux\u670d\u52a1\u5668\u7684\u62d2\u7edd\u670d\u52a1\u653b\u51fb \u62d2\u7edd\u670d\u52a1\u653b\u51fb\uff08Denial of Service, DoS\uff09\u662f\u4e00\u79cd\u901a\u8fc7\u5411\u76ee\u6807\u670d\u52a1\u5668\u53d1\u9001\u5927\u91cf\u8bf7\u6c42\u6216\u5229\u7528\u6f0f\u6d1e\u7b49\u624b\u6bb5\uff0c\u4ee5\u4f7f\u670d\u52a1\u5668\u65e0\u6cd5\u6b63\u5e38\u63d0\u4f9b\u670d\u52a1\u7684\u653b\u51fb\u65b9\u6cd5\u3002Linux\u670d\u52a1\u5668\u4f5c\u4e3a\u7f51\u7edc\u73af\u5883\u4e2d\u6700\u5e38\u7528\u7684\u670d\u52a1\u5668\u7cfb\u7edf\u4e4b\u4e00\uff0c\u4e5f\u662f\u9ed1\u5ba2\u4eec\u7ecf\u5e38\u653b\u51fb\u7684\u76ee\u6807\u4e4b\u4e00\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5e94\u5bf9Linux\u670d\u52a1\u5668\u7684\u62d2\u7edd\u670d\u52a1\u653b\u51fb\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u4ee3\u7801\u793a\u4f8b\u3002 \u4e00\u3001\u914d\u7f6e\u7f51\u7edc\u9632\u706b\u5899 Linux\u670d\u52a1\u5668\u7684\u7b2c\u4e00\u9053\u9632\u7ebf\u662f\u7f51\u7edc\u9632\u706b\u5899\uff0c\u53ef\u4ee5\u4f7f\u7528iptables\u7b49\u5de5\u5177\u8fdb\u884c\u914d\u7f6e\u3002\u901a\u8fc7\u914d\u7f6e\u7f51\u7edc\u9632\u706b\u5899\uff0c\u53ef\u4ee5\u9650\u5236\u67d0\u4e9bIP\u5730\u5740\u6216IP\u5730\u5740\u6bb5\u7684\u8bbf\u95ee\uff0c\u6216\u8005\u9650\u5236\u67d0\u4e9b\u7279\u5b9a\u7684\u7f51\u7edc\u534f\u8bae\u7684\u8bbf\u95ee\u3002\u4ee5\u4e0b\u793a\u4f8b\u4ee3\u7801\u5c55\u793a\u4e86\u5982\u4f55\u914d\u7f6eiptables\u6765\u9650\u5236\u67d0\u4e2aIP\u5730\u5740\u6bb5\u7684\u8bbf\u95ee\uff1a # \u5141\u8bb8\u6240\u6709\u6d41\u91cf\u901a\u8fc7 iptables -P INPUT ACCEPT iptables -P OUTPUT ACCEPT iptables -P FORWARD ACCEPT # \u6e05\u7a7a\u89c4\u5219\u94fe iptables -F iptables -X # \u5141\u8bb8\u672c\u5730\u56de\u73af iptables -A INPUT -i lo -j ACCEPT # \u5141\u8bb8\u5df2\u5efa\u7acb\u7684\u8fde\u63a5\u901a\u8fc7 iptables -A INPUT -m state &#8211;state RELATED,ESTABLISHED -j ACCEPT # \u5141\u8bb8\u67d0\u4e2aIP\u5730\u5740\u6bb5\u7684\u8bbf\u95ee iptables -A INPUT -s [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-51051","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51051","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=51051"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51051\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=51051"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=51051"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=51051"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}