{"id":1039,"date":"2018-10-10T15:57:22","date_gmt":"2018-10-10T07:57:22","guid":{"rendered":"https:\/\/blog.jsjs.org\/?p=1039"},"modified":"2018-10-10T15:57:22","modified_gmt":"2018-10-10T07:57:22","slug":"linux%e7%b3%bb%e7%bb%9f%e9%80%9a%e8%bf%87fail2ban%e5%af%b9%e6%9a%b4%e5%8a%9b%e7%a0%b4%e8%a7%a3%e8%bf%9b%e8%a1%8c%e9%98%b2%e6%8a%a4","status":"publish","type":"post","link":"https:\/\/blog.jsjs.org\/?p=1039","title":{"rendered":"Linux\u7cfb\u7edf\u901a\u8fc7fail2ban\u5bf9\u66b4\u529b\u7834\u89e3\u8fdb\u884c\u9632\u62a4"},"content":{"rendered":"

\u6458\u8981\uff1a<\/em>\u00a0\u66b4\u529b\u7834\u89e3\u653b\u51fb\u662f\u6307\u653b\u51fb\u8005\u901a\u8fc7\u7cfb\u7edf\u5730\u7ec4\u5408\u6240\u6709\u53ef\u80fd\u6027\uff08\u4f8b\u5982\u767b\u5f55\u65f6\u7528\u5230\u7684\u8d26\u6237\u540d\u3001\u5bc6\u7801\uff09\uff0c\u5c1d\u8bd5\u6240\u6709\u7684\u53ef\u80fd\u6027\u7834\u89e3\u7528\u6237\u7684\u8d26\u6237\u540d\u3001\u5bc6\u7801\u7b49\u654f\u611f\u4fe1\u606f\u3002\u653b\u51fb\u8005\u4f1a\u7ecf\u5e38\u4f7f\u7528\u81ea\u52a8\u5316\u811a\u672c\u5de5\u5177\u7ec4\u5408\u51fa\u6b63\u786e\u7684\u7528\u6237\u540d\u548c\u5bc6\u7801\u3002 \u9488\u5bf9\u8fd9\u79cd\u653b\u51fb\u9664\u4e86\u5e38\u89c4\u6027\u7684\u8c03\u6574\u670d\u52a1\u5668\u7684\u8bbe\u7f6e\u8d26\u53f7\u5bc6\u7801\u7684\u590d\u6742\u5ea6\uff0c\u4ee5\u53ca\u8c03\u6574\u9ed8\u8ba4\u7aef\u53e3\u5916\u7b49\u65b9\u5f0f\u63d0\u5347\u653b\u51fb\u96be\u5ea6\u5916\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7\u5f00\u6e90\u5de5\u5177fail2ban\u6765\u8fdb\u884c\u8bbe\u7f6e\u9632\u62a4\u89c4\u5219\u6765\u63d0\u9ad8\u9632\u62a4\u80fd\u529b\u3002<\/p>\n

\n

\u66b4\u529b\u7834\u89e3\u653b\u51fb\u662f\u6307\u653b\u51fb\u8005\u901a\u8fc7\u7cfb\u7edf\u5730\u7ec4\u5408\u6240\u6709\u53ef\u80fd\u6027\uff08\u4f8b\u5982\u767b\u5f55\u65f6\u7528\u5230\u7684\u8d26\u6237\u540d\u3001\u5bc6\u7801\uff09\uff0c\u5c1d\u8bd5\u6240\u6709\u7684\u53ef\u80fd\u6027\u7834\u89e3\u7528\u6237\u7684\u8d26\u6237\u540d\u3001\u5bc6\u7801\u7b49\u654f\u611f\u4fe1\u606f\u3002\u653b\u51fb\u8005\u4f1a\u7ecf\u5e38\u4f7f\u7528\u81ea\u52a8\u5316\u811a\u672c\u5de5\u5177\u7ec4\u5408\u51fa\u6b63\u786e\u7684\u7528\u6237\u540d\u548c\u5bc6\u7801\u3002<\/p>\n

\u9488\u5bf9\u8fd9\u79cd\u653b\u51fb\u9664\u4e86\u5e38\u89c4\u6027\u7684\u8c03\u6574\u670d\u52a1\u5668\u7684\u8bbe\u7f6e\u8d26\u53f7\u5bc6\u7801\u7684\u590d\u6742\u5ea6\uff0c\u4ee5\u53ca\u8c03\u6574\u9ed8\u8ba4\u7aef\u53e3\u5916\u7b49\u65b9\u5f0f\u63d0\u5347\u653b\u51fb\u96be\u5ea6\u5916\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7\u5f00\u6e90\u5de5\u5177fail2ban\u6765\u8fdb\u884c\u8bbe\u7f6e\u9632\u62a4\u89c4\u5219\u6765\u63d0\u9ad8\u9632\u62a4\u80fd\u529b\u3002<\/p>\n

\u9996\u5148\u7b80\u5355\u8bf4\u4e00\u4e0b\u670d\u52a1\u5668\u7684\u57fa\u7840\u9632\u62a4\u8bbe\u7f6e
\n1\u3001\u5bc6\u7801\u8981\u6ee1\u8db3\u590d\u6742\u6027\u8981\u6c42
\na.\u5bc6\u7801\u957f\u5ea6\u8981\u6c428\u4f4d\u4ee5\u4e0a\uff0c\u6700\u597d\u662f14\u4f4d\u4ee5\u4e0a
\nb.\u5bc6\u7801\u8981\u6c42\u81f3\u5c11\u5305\u542b\u5927\u5c0f\u5199\u5b57\u6bcd\u3001\u6570\u5b57\u548c\u7279\u6b8a\u7b26\u53f7\u56db\u79cd\u5b57\u7b26\u4e2d\u7684\u4e09\u79cd\u4ee5\u4e0a<\/p>\n

2\u3001\u4fee\u6539ssh\u7a0b\u5e8f\u9ed8\u8ba4\u7684\u8fdc\u7a0b\u7aef\u53e3\u53f7
\n\u8fd9\u4e00\u70b9\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574 \/etc\/ssh\/sshd_config \u6587\u4ef6\u4e2d\u7684Port \u53c2\u6570\u6765\u5b9e\u73b0
\n\u4fee\u6539\u4e86\u7aef\u53e3\u53f7\u4e4b\u540e\u8fdc\u7a0b\u5de5\u5177\u8fdb\u884c\u8fde\u63a5\u65f6\u9700\u8981\u6307\u5b9a\u7aef\u53e3\u53f7\u624d\u53ef\u4ee5\u6b63\u5e38\u8fde\u63a5\uff0c\u901a\u8fc7ssh\u547d\u4ee4\u8fde\u63a5\u65f6\u9700\u8981\u901a\u8fc7-p\u53c2\u6570\u6307\u5b9a\u7aef\u53e3\u53f7<\/p>\n

3\u3001\u4fee\u6539\u9ed8\u8ba4\u7684\u7ba1\u7406\u5458\u8d26\u53f7
\na.\u5148\u5bf9\u9ed8\u8ba4\u7684root\u8d26\u53f7\u8fdb\u884c\u7981\u7528\uff08\u6ce8\u610f\uff1a\u963f\u91cc\u4e91\u63a7\u5236\u53f0\u4e0a\u7684\u5bc6\u7801\u91cd\u7f6e\u529f\u80fd\u53ea\u5bf9\u9ed8\u8ba4\u7684root\u8d26\u53f7\u751f\u6548\uff0c\u5982\u679c\u505a\u4e86\u6b64\u64cd\u4f5c\u540e\u540e\u671f\u662f\u4e0d\u80fd\u4f7f\u7528\u963f\u91cc\u4e91\u63a7\u5236\u53f0\u7684\u5bc6\u7801\u91cd\u7f6e\u529f\u80fd\u7684\uff09\uff0c\u7981\u7528\u65b9\u6cd5\u76f4\u63a5\u4fee\u6539root\u7528\u6237\u7684\u767b\u9646shell\u4e3a \/sbin\/nologin \u5373\u53ef\u3002
\n\"screenshot\"<\/p>\n

b.\u521b\u5efa\u65b0\u7684\u7528\u6237\u540d\uff0c\u4f5c\u4e3a\u7ba1\u7406\u5458\u8d26\u53f7\uff0cLinux\u7cfb\u7edf\u5224\u5b9a\u7ba1\u7406\u5458\u8d26\u53f7\u7684\u65b9\u6cd5\u662f\u53ef\u4ee5\u901a\u8fc7UID\u5b9e\u73b0\u7684\uff0c\u9ed8\u8ba4UID\u4e3a0\u7684\u7528\u6237\u662f\u7ba1\u7406\u5458\uff0c\u6240\u4ee5\u53ea\u9700\u8981\u521b\u5efa\u7528\u6237\u540e\uff0c\u5728passwd\u6587\u4ef6\u4e2d\u628a\u7528\u6237UID\u6539\u4e3a0\u5373\u53ef
\n\u521b\u5efa\u7528\u6237\uff0c\u5e76\u8bbe\u7f6e\u5bc6\u7801\uff0c\u4ee5\u53ca\u6700\u7ec8\u7684\u4fee\u6539\u6548\u679c\uff0c\u53ef\u4ee5\u53c2\u8003\u4e0b\u56fe\uff0c\u901a\u8fc7id\u547d\u4ee4\u67e5\u8be2\u7ed3\u679c\u53ef\u4ee5\u770b\u5230\u65b0\u5efa\u7684\u7528\u6237\u6743\u9650\u662froot\u6743\u9650
\n\"screenshot\"<\/p>\n

\u901a\u8fc7\u4e0a\u8ff0\u65b9\u5f0f\u7684\u8bbe\u7f6e\uff0c\u662f\u53ef\u4ee5\u63d0\u5347\u670d\u52a1\u5668\u9488\u5bf9\u66b4\u529b\u7834\u89e3\u7684\u9632\u62a4\u80fd\u529b\u7684\uff0c\u8bbe\u7f6e\u4e4b\u540e\u57fa\u672c\u4e0a\u9ed1\u5ba2\u60f3\u8981\u66b4\u529b\u6210\u529f\u662f\u5f88\u56f0\u96be\u7684\u3002
\n\u4f46\u662f\u5982\u679c\u66b4\u529b\u7834\u89e3\u7684\u60c5\u51b5\u5f88\u4e25\u91cd\uff0c\u867d\u7136\u7ecf\u8fc7\u4e0a\u8ff0\u8bbe\u7f6e\u540e\uff0c\u9ed1\u5ba2\u5f88\u96be\u66b4\u529b\u7834\u89e3\u6210\u529f\uff0c\u4f46\u662f\u7531\u4e8e\u66b4\u529b\u7834\u89e3\u65f6\u670d\u52a1\u5668\u9700\u8981\u4e0d\u65ad\u7684\u5bf9\u7528\u6237\u767b\u5f55\u8fdb\u884c\u8ba4\u8bc1\uff0c\u4e5f\u4f1a\u5bfc\u81f4\u670d\u52a1\u5668\u4ea7\u751f\u5f88\u591a\u989d\u5916\u7684\u5f00\u9500\uff0c\u8fdb\u800c\u5f71\u54cd\u670d\u52a1\u5668\u7684\u8d44\u6e90\u8d1f\u8f7d\u72b6\u51b5\u3002
\n\u9488\u5bf9\u8fd9\u79cd\u60c5\u51b5\uff0c\u53ef\u4ee5\u8003\u8651\u901a\u8fc7\u5f00\u6e90\u5de5\u5177fail2ban\u76d1\u89c6\u65e5\u5fd7\u60c5\u51b5\u5c06\u6ee1\u8db3\u52a8\u4f5c\u7684\u76f8\u5173IP\u5229\u7528iptables\u52a0\u5165\u5230dorp\u5217\u8868\u4e00\u5b9a\u65f6\u95f4\u3002
\n\u6ce8\u610f\uff1a\u8fd9\u79cd\u65b9\u6cd5\u5982\u679c\u624b\u52a8\u91cd\u542f\u4e86iptables\u670d\u52a1\u7684\u8bdd\uff0c\u6240\u6709\u7684drop\u89c4\u5219\u4f1a\u5931\u6548\u3002
\n1\u3001\u5230fail2ban\u5b98\u7f51\u4e0b\u8f7d\u7a0b\u5e8f\u6e90\u7801\u5305
\n\u5b98\u7f51\u5730\u5740http:\/\/www.fail2ban.org<\/a>\u00a0\u7531\u4e8e\u662f\u6d77\u5916\u7ad9\u70b9\uff0c\u6240\u4ee5\u4e0b\u8f7d\u901f\u5ea6\u4e0a\u53ef\u80fd\u6bd4\u8f83\u6162\uff0c\u672c\u6587\u4e2d\u901a\u8fc7\u7a33\u5b9a\u7248fail2ban-0.8.14\u505a\u6f14\u793a\uff0c\u5177\u4f53\u7684\u4e0b\u8f7d\u5730\u5740
\nhttps:\/\/codeload.github.com\/fail2ban\/fail2ban\/tar.gz\/0.8.14<\/a>
\n\"screenshot\"
\n\"screenshot\"<\/p>\n

2\u3001\u4e0b\u8f7d\u597d\u7684\u7a0b\u5e8f\u662f\u6e90\u7801\u5305\u7684\u5f62\u5f0f\uff0c\u9700\u8981\u624b\u52a8\u8fdb\u884c\u7f16\u8bd1\u5b89\u88c5
\n\u8fd9\u4e2a\u7a0b\u5e8f\u662f\u901a\u8fc7python\u8bed\u8a00\u7f16\u5199\u7684\uff0c\u9700\u8981\u901a\u8fc7python\u547d\u4ee4\u5b89\u88c5\uff0c\u8981\u6c42python\u7248\u672c\u4e0d\u80fd\u4f4e\u4e8e2.4 \uff0c\u5177\u4f53\u7684python\u7248\u672c\u60c5\u51b5\u53ef\u4ee5\u5728\u7cfb\u7edf\u4e2d\u6267\u884cpython -V\u8fdb\u884c\u6838\u5b9e
\n\"screenshot\"<\/p>\n

\u5b89\u88c5\u5b8c\u6210\u540e\u8981\u624b\u52a8\u751f\u6210\u4e00\u4e0b\u7a0b\u5e8f\u7684\u542f\u52a8\u811a\u672c
\n\"screenshot\"<\/p>\n

3\u3001\u7a0b\u5e8f\u6587\u4ef6\u8bf4\u660e
\n\u5b89\u88c5\u5b8c\u6210\u540e\u7a0b\u5e8f\u6587\u4ef6\u90fd\u662f\u4fdd\u5b58\u5728 \/etc\/fail2ban \u76ee\u5f55\u4e0b\u7684
\n\"screenshot\"<\/p>\n

\/etc\/fail2ban\/action.d\u00a0#\u52a8\u4f5c\u6587\u4ef6\u5939\uff0c\u5185\u542b\u9ed8\u8ba4\u6587\u4ef6\u3002iptables\u4ee5\u53camail\u7b49\u52a8\u4f5c\u914d\u7f6e<\/strong>
\n\/etc\/fail2ban\/fail2ban.conf\u00a0#\u5b9a\u4e49\u4e86fai2ban\u65e5\u5fd7\u7ea7\u522b\u3001\u65e5\u5fd7\u4f4d\u7f6e\u53casock\u6587\u4ef6\u4f4d\u7f6e<\/strong>
\n\/etc\/fail2ban\/filter.d\u00a0#\u6761\u4ef6\u6587\u4ef6\u5939\uff0c\u5185\u542b\u9ed8\u8ba4\u6587\u4ef6\u3002\u8fc7\u6ee4\u65e5\u5fd7\u5173\u952e\u5185\u5bb9\u8bbe\u7f6e<\/strong>
\n\/etc\/fail2ban\/jail.conf\u00a0#\u4e3b\u8981\u914d\u7f6e\u6587\u4ef6\uff0c\u6a21\u5757\u5316\u3002\u4e3b\u8981\u8bbe\u7f6e\u542f\u7528ban\u52a8\u4f5c\u7684\u670d\u52a1\u53ca\u52a8\u4f5c\u9608\u503c<\/strong><\/p>\n

4\u3001\u914d\u7f6e\u6848\u4f8b
\n\u8bbe\u7f6e\u6761\u4ef6\uff1assh\u8fdc\u7a0b\u767b\u5f555\u5206\u949f\u51853\u6b21\u5bc6\u7801\u9a8c\u8bc1\u5931\u8d25\uff0c\u7981\u6b62\u7528\u6237IP\u8bbf\u95ee\u4e3b\u673a1\u5c0f\u65f6\uff0c1\u5c0f\u65f6\u8be5\u9650\u5236\u81ea\u52a8\u89e3\u9664\uff0c\u7528\u6237\u53ef\u91cd\u65b0\u767b\u5f55\u3002
\n\u9700\u8981\u4fee\u6539\/etc\/fail2ban\/jail.conf \u6587\u4ef6\u5b9e\u73b0\u9632\u62a4\u89c4\u5219\u914d\u7f6e
\n\u9996\u5148\u662f\u5168\u5c40\u914d\u7f6e\uff0c\u4e3b\u8981\u914d\u7f6e\u9879\u5982\u4e0b
\n[DEFAULT]\u00a0#\u5168\u5c40\u8bbe\u7f6e<\/strong>
\nignoreip = 127.0.0.1\/8\u00a0#\u5ffd\u7565\u7684IP\u5217\u8868,\u4e0d\u53d7\u8bbe\u7f6e\u9650\u5236<\/strong>
\nbantime = 600\u00a0#\u5c4f\u853d\u65f6\u95f4\uff0c\u5355\u4f4d\uff1a\u79d2<\/strong>
\nfindtime = 600\u00a0#\u8fd9\u4e2a\u65f6\u95f4\u6bb5\u5185\u8d85\u8fc7\u89c4\u5b9a\u6b21\u6570\u4f1a\u88abban\u6389<\/strong>
\nmaxretry = 3\u00a0#\u6700\u5927\u5c1d\u8bd5\u6b21\u6570<\/strong>
\nbackend = auto\u00a0#\u65e5\u5fd7\u4fee\u6539\u68c0\u6d4b\u673a\u5236\uff08gamin\u3001polling\u548cauto\u8fd9\u4e09\u79cd\uff09<\/strong>
\n\u7136\u540e\u662fsshd\u7a0b\u5e8f\u9632\u62a4\u8bbe\u7f6e
\n[ssh-iptables]
\nenabled = true\u00a0#\u542f\u7528\u914d\u7f6e<\/strong>
\nfilter = sshd\u00a0#\u89c4\u5f8b\u89c4\u5219\u540d\uff0c\u5bf9\u5e94filter.d\u76ee\u5f55\u4e0b\u7684sshd.conf<\/strong>
\naction = iptables[name=SSH, port=ssh, protocol=tcp]<\/p>\n

                        **#\u52a8\u4f5c\u7684\u76f8\u5173\u53c2\u6570\uff0c\u5bf9\u5e94action.d\/iptables.conf\u6587\u4ef6**<\/span>\n       sendmail-whois[name=SSH, dest=you@example.com, sender=fail2ban@example.com, sendername=\"Fail2Ban\"<\/span>]        **#\u89e6\u53d1\u62a5\u8b66\u7684\u6536\u4ef6\u4eba**<\/span><\/code><\/pre>\n
logpath = \/var\/log\/secure\u00a0#\u68c0\u6d4b\u7684\u7cfb\u7edf\u7684\u767b\u9646\u65e5\u5fd7\u6587\u4ef6\u3002\u8fd9\u91cc\u8981\u5199sshd\u670d\u52a1\u65e5\u5fd7\u6587\u4ef6<\/strong>
\nbantime = 3600\u00a0#\u7981\u6b62\u7528\u6237IP\u8bbf\u95ee\u4e3b\u673a1\u5c0f\u65f6<\/strong>
\nfindtime = 300\u00a0#\u57285\u5206\u949f\u5185\u5185\u51fa\u73b0\u89c4\u5b9a\u6b21\u6570\u5c31\u5f00\u59cb\u5de5\u4f5c<\/strong>
\nmaxretry = 3\u00a0#3\u6b21\u5bc6\u7801\u9a8c\u8bc1\u5931\u8d25<\/strong><\/p>\n
\u6ce8\u610f\uff1a\u5355\u4e2a\u670d\u52a1\u68c0\u67e5\u8bbe\u7f6e\uff0c\u5982\u8bbe\u7f6ebantime\u3001findtime\u3001maxretry\u548c\u5168\u5c40\u51b2\u7a81\uff0c\u670d\u52a1\u4f18\u5148\u7ea7\u5927\u4e8e\u5168\u5c40\u8bbe\u7f6e\u3002<\/strong><\/p>\n
\u5ba2\u6237\u7aef\u6d4b\u8bd5\uff0c\u8fde\u7eed\u8f93\u95193\u6b21\u5bc6\u7801\u540e\u65e0\u6cd5\u6b63\u5e38\u8fde\u63a5\u5230\u670d\u52a1\u5668\uff0c\u67e5\u770b\u670d\u52a1\u5668\u4e2d\u591a\u4e86\u6761\u9488\u5bf9\u6e90\u5730\u5740\u7684\u8fde\u63a5REJECT\u7b56\u7565
\n\"screenshot\"<\/p>\n
5\u3001fail2ban\u5de5\u4f5c\u72b6\u6001\u67e5\u8be2
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