{"id":4226,"date":"2021-11-26T14:52:35","date_gmt":"2021-11-26T22:52:35","guid":{"rendered":"https:\/\/www.xh86.me\/?p=4226"},"modified":"2021-11-26T14:52:35","modified_gmt":"2021-11-26T22:52:35","slug":"%e4%bd%bf%e7%94%a8-fail2ban-%e4%bf%9d%e6%8a%a4%e6%82%a8%e7%9a%84-linux-%e6%9c%8d%e5%8a%a1%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.xh86.me\/?p=4226","title":{"rendered":"\u4f7f\u7528 Fail2Ban \u4fdd\u62a4\u60a8\u7684 Linux \u670d\u52a1\u5668"},"content":{"rendered":"

\u4ec0\u4e48\u662f Fail2Ban\uff1f<\/h2>\n

\u5982\u679c\u60a8\u5df2\u542f\u7528 SSH\uff0c\u8bf7\u68c0\u67e5\u60a8\u7684 Linux \u670d\u52a1\u5668\u7684\u767b\u5f55\u5386\u53f2\u8bb0\u5f55\u3002 \u60a8\u4f1a\u60ca\u8bb6\u5730\u770b\u5230\u5927\u91cf IP \u5c1d\u8bd5\u901a\u8fc7 SSH \u767b\u5f55\u5230\u60a8\u7684\u670d\u52a1\u5668\u3002<\/p>\n

\u5982\u679c\u60a8\u6ca1\u6709\u9002\u5f53\u7684\u673a\u5236\u6765\u963b\u6b62\u8fd9\u4e9b\u767b\u5f55\u5c1d\u8bd5\uff0c\u60a8\u7684\u7cfb\u7edf\u5f88\u5bb9\u6613\u53d7\u5230\u00a0\u86ee\u529b\u653b\u51fb. \u57fa\u672c\u4e0a\uff0c\u811a\u672c\/\u673a\u5668\u4eba\u5c06\u901a\u8fc7\u5c1d\u8bd5\u5404\u79cd\u7528\u6237\u540d\u548c\u5bc6\u7801\u7ec4\u5408\u6765\u7ee7\u7eed\u5c1d\u8bd5 SSH \u8fde\u63a5\u60a8\u7684\u7cfb\u7edf\u3002<\/p>\n

<\/div>\n

\u8fd9\u662f\u4e00\u4e2a\u50cf\u00a0\u7981\u6b62\u5931\u8d25\u00a0\u8fdb\u5165\u753b\u9762\u3002 Fail2Ban \u662f\u4e00\u6b3e\u514d\u8d39\u7684\u5f00\u6e90\u8f6f\u4ef6\uff0c\u53ef\u5e2e\u52a9\u4fdd\u62a4\u60a8\u7684 Linux \u670d\u52a1\u5668\u514d\u53d7\u6076\u610f\u767b\u5f55\u3002 \u5982\u679c\u6709\u4e00\u5b9a\u6570\u91cf\u7684\u5931\u8d25\u767b\u5f55\u5c1d\u8bd5\uff0cFail2Ban \u5c06\u7981\u6b62 IP\uff08\u4e00\u6bb5\u65f6\u95f4\uff09\u3002<\/p>\n

Fail2Ban \u4f7f\u7528\u57fa\u672c\u8bbe\u7f6e\u5f00\u7bb1\u5373\u7528\uff0c\u4f46\u5b83\u4e5f\u975e\u5e38\u53ef\u914d\u7f6e\u3002 \u60a8\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u559c\u597d\u5bf9\u5176\u8fdb\u884c\u8c03\u6574\uff0c\u5e76\u6839\u636e\u9700\u8981\u521b\u5efa\u8fc7\u6ee4\u5668\u548c\u89c4\u5219\u3002<\/p>\n

\u542c\u8d77\u6765\u4e0d\u9519\uff1f \u4e3a\u4ec0\u4e48\u4e0d\u6d4b\u8bd5Fail2Ban\uff1f \u9605\u8bfb\u5e76\u9075\u5faa\u672c\u6587\u7684\u5176\u4f59\u90e8\u5206\uff0c\u7136\u540e\u81ea\u5df1\u5c1d\u8bd5 Fail2Ban\u3002<\/p>\n

<\/div>\n

\u5728 Linux \u4e0a\u5b89\u88c5 Fail2Ban<\/h2>\n

\u60a8\u53ef\u4ee5\u4ece\u6240\u6709\u4e3b\u8981 Linux \u53d1\u884c\u7248\u7684\u5b98\u65b9\u5b58\u50a8\u5e93\u4e2d\u90fd\u53ef\u4ee5\u627e\u5230 Fail2Ban \u7684\u4e8b\u5b9e\u6765\u731c\u6d4b\u5b83\u7684\u53d7\u6b22\u8fce\u7a0b\u5ea6\u3002 \u8fd9\u4f7f\u5f97\u5b89\u88c5 Fail2Ban \u6210\u4e3a\u4e00\u9879\u7b80\u5355\u7684\u4efb\u52a1\u3002<\/p>\n

\u5728 CentOS \u548c Red Hat \u4e0a\u5b89\u88c5 Fail2Ban<\/h3>\n

\u4f60\u9700\u8981\u662f root \u6216 sudo \u7528\u6237\u4ee5\u4fbf\u5728\u60a8\u7684\u7cfb\u7edf\u4e0a\u5b89\u88c5\u65b0\u8f6f\u4ef6\u3002<\/p>\n

\u60a8\u9700\u8981\u786e\u4fdd\u60a8\u7684\u7cfb\u7edf\u662f\u6700\u65b0\u7684\u5e76\u4e14\u60a8\u6709\u00a0EPEL \u5b58\u50a8\u5e93\u00a0\u5b89\u88c5\u3002<\/p>\n

sudo yum update && sudo yum install epel-release<\/code><\/pre>\n
\u73b0\u5728\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5 Fail2Ban\uff1a<\/p>\n
<\/div>\n
sudo yum install fail2ban<\/code><\/pre>\n
\u5728 Ubuntu \u548c Debian \u4e0a\u5b89\u88c5 Fail2Ban<\/h3>\n
\u9996\u5148\uff0c\u786e\u4fdd\u60a8\u7684\u7cfb\u7edf\u5df2\u66f4\u65b0\uff1a<\/p>\n
sudo apt update && sudo apt upgrade -y<\/code><\/pre>\n
\u73b0\u5728\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5 Fail2Ban\uff1a<\/p>\n
sudo apt install fail2ban<\/code><\/pre>\n
\u4e86\u89e3 Fail2Ban \u914d\u7f6e\u6587\u4ef6<\/h2>\n
Fail2Ban \u4e2d\u6709\u4e24\u4e2a\u4e3b\u8981\u7684\u914d\u7f6e\u6587\u4ef6\uff1a\/etc\/fail2ban\/fail2ban.conf \u548c \/etc\/fail2ban\/jail.conf\u3002 \u8ba9\u6211\u89e3\u91ca\u4e00\u4e0b\u4ed6\u4eec\u662f\u505a\u4ec0\u4e48\u7684\u3002<\/p>\n
<\/div>\n
\/etc\/fail2ban\/fail2ban.conf<\/strong>\uff1a\u8fd9\u662fFail2Ban \u5b88\u62a4\u8fdb\u7a0b\u7684\u64cd\u4f5c\u8bbe\u7f6e\u7684\u914d\u7f6e\u6587\u4ef6\u3002 \u6b64\u5904\u5b9a\u4e49\u4e86\u65e5\u5fd7\u7ea7\u522b\u3001\u65e5\u5fd7\u6587\u4ef6\u3001\u5957\u63a5\u5b57\u548c pid \u6587\u4ef6\u7b49\u8bbe\u7f6e\u3002<\/p>\n
\/etc\/fail2ban\/jail.conf<\/strong>: \u8fd9\u5c31\u662f\u6240\u6709\u9b54\u6cd5\u53d1\u751f\u7684\u5730\u65b9\u3002 \u5728\u6b64\u6587\u4ef6\u4e2d\uff0c\u60a8\u53ef\u4ee5\u914d\u7f6e\u9ed8\u8ba4\u7981\u6b62\u65f6\u95f4\u3001\u7981\u6b62 IP \u524d\u7684\u91cd\u8bd5\u6b21\u6570\u3001\u5c06 IP \u5217\u5165\u767d\u540d\u5355\u3001\u90ae\u4ef6\u53d1\u9001\u4fe1\u606f\u7b49\u3002\u57fa\u672c\u4e0a\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u8be5\u6587\u4ef6\u63a7\u5236 Fail2Ban \u7684\u884c\u4e3a\u3002<\/p>\n
\u73b0\u5728\uff0c\u5728\u60a8\u66f4\u6539\u8fd9\u4e9b\u6587\u4ef6\u4e4b\u524d\uff0cFail2Ban \u5efa\u8bae\u4e3a\u8fd9\u4e9b conf \u6587\u4ef6\u5236\u4f5c\u4e00\u4e2a\u5e26\u6709 .local \u6587\u4ef6\u7684\u526f\u672c\u3002 \u8fd9\u662f\u56e0\u4e3a\u9ed8\u8ba4\u7684 conf \u6587\u4ef6\u53ef\u4ee5\u5728\u66f4\u65b0\u4e2d\u88ab\u8986\u76d6\uff0c\u5e76\u4e14\u60a8\u5c06\u4e22\u5931\u6240\u6709\u8bbe\u7f6e\u3002<\/p>\n
<\/div>\n
sudo cp \/etc\/fail2ban\/fail2ban.conf \/etc\/fail2ban\/fail2ban.local\r\nsudo cp \/etc\/fail2ban\/jail.conf \/etc\/fail2ban\/jail.local<\/code><\/pre>\n
\u73b0\u5728\u8ba9\u6211\u4eec\u4e86\u89e3\u4e00\u4e0b jail.conf \u6587\u4ef6\u3002 \u5982\u679c\u4f7f\u7528 less \u547d\u4ee4\u6765\u8bfb\u53d6\u8fd9\u4e2a\u5927\u6587\u4ef6\uff0c\u53ef\u80fd\u770b\u8d77\u6765\u5f88\u6df7\u4e71\u3002 conf \u6587\u4ef6\u8bd5\u56fe\u7528\u592a\u591a\u7684\u6ce8\u91ca\u6765\u89e3\u91ca\u4e00\u5207\u3002 \u6240\u4ee5\uff0c\u8ba9\u6211\u4e3a\u4f60\u7b80\u5316\u4e00\u4e0b\u3002<\/p>\n
jail.conf \u6587\u4ef6\u5206\u4e3a\u670d\u52a1\u3002 \u6709\u4e00\u4e2a [Default] \u90e8\u5206\uff0c\u5b83\u9002\u7528\u4e8e\u6240\u6709\u670d\u52a1\u3002 \u7136\u540e\u60a8\u53ef\u4ee5\u770b\u5230\u5177\u6709\u5404\u81ea\u8bbe\u7f6e\u7684\u5404\u79cd\u670d\u52a1\uff08\u5982\u679c\u6709\uff09\u3002 \u6240\u6709\u8fd9\u4e9b\u670d\u52a1\u90fd\u5728\u62ec\u53f7\u4e2d\u3002 \u4f60\u4f1a\u770b\u5230\u50cf\u8fd9\u6837\u7684\u90e8\u5206 [sshd], [apache-auth], [squid] \u7b49\u7b49\u3002<\/p>\n
\u5982\u679c\u6211\u5220\u9664\u8bc4\u6d4b\uff0c\u9ed8\u8ba4\u90e8\u5206\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
<\/div>\n
[DEFAULT]\r\nignorecommand =\r\nbantime = 10m\r\nfindtime = 10m\r\nmaxretry = 5\r\nbackend = auto\r\nusedns = warn\r\nlogencoding = auto\r\nenabled = false\r\nmode = normal\r\nfilter = %(name)s[mode=%(mode)s]\r\ndestemail = [email\u00a0protected]\r\nsender = [email\u00a0protected]\r\nmta = sendmail\r\nprotocol = tcp\r\nchain =\r\nport = 0:65535\r\nfail2ban_agent = Fail2Ban\/%(fail2ban_version)s\r\nbanaction = iptables-multiport\r\nbanaction_allports = iptables-allports\r\naction_abuseipdb = abuseipdb\r\naction = %(action_)s<\/code><\/pre>\n
\u8ba9\u6211\u544a\u8bc9\u4f60\u5176\u4e2d\u4e00\u4e9b\u53c2\u6570\u7684\u542b\u4e49\u3002<\/p>\n
    \n
  • bantime\uff1a\u8bbe\u7f6e\u7981\u4ee4\u7684\u957f\u5ea6\u3002 \u9ed8\u8ba4\u4e3a 10 \u5206\u949f\u3002<\/li>\n
  • findtime\uff1a\u5c06\u5bf9 IP \u6267\u884c\u64cd\u4f5c\u7684\u7a97\u53e3\u3002 \u9ed8\u8ba4\u4e3a 10 \u5206\u949f\u3002 \u5047\u8bbe\u67d0\u4e2a IP \u5728 10:30 \u5c1d\u8bd5\u8fdb\u884c\u9519\u8bef\u767b\u5f55\u3002 \u5982\u679c\u540c\u4e00IP\u572810:40\u4e4b\u524d\u8fbe\u5230\u6700\u5927\u91cd\u8bd5\u6b21\u6570\uff0c\u5c06\u88ab\u7981\u6b62\u3002 \u5426\u5219\uff0c10:40 \u4e4b\u540e\u7684\u4e0b\u4e00\u6b21\u5931\u8d25\u5c1d\u8bd5\u5c06\u88ab\u89c6\u4e3a\u7b2c\u4e00\u6b21\u5931\u8d25\u5c1d\u8bd5\u3002<\/li>\n
  • maxretry\uff1a\u6267\u884c\u64cd\u4f5c\u4e4b\u524d\u5931\u8d25\u7684\u91cd\u8bd5\u6b21\u6570<\/li>\n
  • usedns\uff1a\u201c\u8b66\u544a\u201d\u8bbe\u7f6e\u5c1d\u8bd5\u4f7f\u7528\u53cd\u5411 DNS \u67e5\u627e\u4e3b\u673a\u540d\u5e76\u4f7f\u7528\u4e3b\u673a\u540d\u7981\u6b62\u5b83\u3002 \u5c06\u5176\u8bbe\u7f6e\u4e3a no \u5c06\u7981\u6b62 IP\uff0c\u800c\u4e0d\u662f\u4e3b\u673a\u540d\u3002<\/li>\n
  • destemail\uff1a\u8b66\u62a5\u5c06\u53d1\u9001\u5230\u7684\u7535\u5b50\u90ae\u4ef6\u5730\u5740\uff08\u9700\u8981\u914d\u7f6e\uff09<\/li>\n
  • \u53d1\u4ef6\u4eba\uff1a\u901a\u77e5\u90ae\u4ef6\u4e2d\u7684\u53d1\u4ef6\u4eba\u59d3\u540d<\/li>\n
  • mta\uff1a\u7528\u4e8e\u901a\u77e5\u7535\u5b50\u90ae\u4ef6\u7684\u90ae\u4ef6\u4f20\u8f93\u4ee3\u7406<\/li>\n
  • banaction\uff1a\u6b64\u53c2\u6570\u4f7f\u7528\/etc\/fail2ban\/action.d\/iptables-multiport.conf \u6587\u4ef6\u8bbe\u7f6e\u6700\u5927\u5931\u8d25\u91cd\u8bd5\u6b21\u6570\u540e\u7684\u52a8\u4f5c<\/li>\n
  • \u534f\u8bae\uff1a\u7981\u4ee4\u540e\u5c06\u88ab\u4e22\u5f03\u7684\u6d41\u91cf\u7c7b\u578b<\/li>\n<\/ul>\n
    \u5982\u679c\u60a8\u60f3\u5bf9\u4efb\u4f55\u76d1\u72f1\uff08\u6216\u6240\u6709\u76d1\u72f1\uff09\u8fdb\u884c\u4efb\u4f55\u66f4\u6539\uff0c\u4f8b\u5982\u6700\u5927\u91cd\u8bd5\u6b21\u6570\u3001\u7981\u6b62\u65f6\u95f4\u3001\u67e5\u627e\u65f6\u95f4\u7b49\uff0c\u60a8\u5e94\u8be5\u7f16\u8f91 jail.local \u6587\u4ef6\u3002<\/strong><\/p>\n
    \u600e\u6837\u4f7f\u7528 Fail2Ban \u4fdd\u62a4 Linux \u670d\u52a1\u5668<\/h2>\n
    \u8ba9\u6211\u5411\u60a8\u5c55\u793a\u4e00\u4e9b\u53ef\u4ee5\u4f7f\u7528 Fail2Ban \u6765\u5f3a\u5316 Linux \u5b89\u5168\u6027\u7684\u65b9\u6cd5\u3002<\/p>\n
    <\/div>\n
    \u8bf7\u6ce8\u610f\uff0c\u60a8\u9700\u8981\u662f root \u7528\u6237\u6216\u62e5\u6709 sudo \u8bbf\u95ee\u8fd0\u884cfail2ban\u547d\u4ee4\u3002<\/p>\n
    \u5728\u60a8\u7684\u670d\u52a1\u5668\u4e0a\u542f\u7528 Fail2Ban \u5e76\u68c0\u67e5\u6240\u6709\u6b63\u5728\u8fd0\u884c\u7684 jail<\/h3>\n
    \u60a8\u53ef\u4ee5\u4f7f\u7528 systemd \u547d\u4ee4\u5728 Linux \u670d\u52a1\u5668\u4e0a\u542f\u52a8\u548c\u542f\u7528 Fail2Ban\uff1a<\/p>\n
    systemctl start fail2ban\r\nsystemctl enable fail2ban<\/code><\/pre>\n
    \u542f\u7528 Fail2Ban \u540e\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 fail2ban-client \u547d\u4ee4\u67e5\u770b\u72b6\u6001\u548c\u6d3b\u52a8\u76d1\u72f1\uff1a<\/p>\n
    fail2ban-client status\r\nStatus\r\n|- Number of jail: 1\r\n`- Jail list: sshd<\/code><\/pre>\n
    \u5982\u679c\u60a8\u60f3\u77e5\u9053\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u542f\u7528 sshd jail\u3002<\/p>\n
    <\/div>\n
    \u67e5\u770b Fail2Ban \u65e5\u5fd7<\/h3>\n
    Fail2Ban \u65e5\u5fd7\u4f4d\u4e8e \/var\/log\/fail2ban.log\u3002 \u65e5\u5fd7\u6587\u4ef6\u91c7\u7528\u4ee5\u4e0b\u683c\u5f0f\uff1a<\/p>\n
    2019-03-25 07:09:08,004 fail2ban.filter [25630]: INFO [sshd] Found 139.59.69.76 \u2013 2019-03-25 07:09:07\r\n2019-03-25 07:09:36,756 fail2ban.filter [25630]: INFO [sshd] Found 159.89.205.213 \u2013 2019-03-25 07:09:36\r\n2019-03-25 07:09:36,757 fail2ban.filter [25630]: INFO [sshd] Found 159.89.205.213 \u2013 2019-03-25 07:09:36\r\n2019-03-25 07:09:36,774 fail2ban.actions [25630]: NOTICE [sshd] Ban 159.89.205.213\r\n2019-03-25 07:09:36,956 fail2ban.filter [25630]: INFO [sshd] Found 182.70.253.202 \u2013 2019-03-25 07:09:36\r\n2019-03-25 07:09:36,957 fail2ban.filter [25630]: INFO [sshd] Found 182.70.253.202 \u2013 2019-03-25 07:09:36\r\n2019-03-25 07:09:36,981 fail2ban.actions [25630]: NOTICE [sshd] Ban 182.70.253.202\r\n2019-03-25 07:09:37,247 fail2ban.filter [25630]: INFO [sshd] Found 112.64.214.90 \u2013 2019-03-25 07:09:37\r\n2019-03-25 07:09:37,248 fail2ban.filter [25630]: INFO [sshd] Found 112.64.214.90 \u2013 2019-03-25 07:09:37\r\n2019-03-25 07:09:37,589 fail2ban.actions [25630]: NOTICE [sshd] Ban 112.64.214.90<\/code><\/pre>\n
    \u60a8\u53ef\u4ee5\u770b\u5230\u5b83\u8bc6\u522b IP \u5e76\u5728\u5b83\u4eec\u8d85\u8fc7\u6700\u5927\u91cd\u8bd5\u9608\u503c\u65f6\u7981\u6b62\u5b83\u4eec\u3002<\/p>\n
    \u901a\u8fc7 Fail2Ban \u67e5\u770b\u88ab\u7981\u6b62\u7684 IP<\/h3>\n
    \u4e00\u79cd\u65b9\u6cd5\u662f\u68c0\u67e5\u67d0\u4e2a\u76d1\u72f1\u7684\u72b6\u6001\u3002 \u4e3a\u6b64\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 Fail2Ban \u5ba2\u6237\u7aef\u3002<\/p>\n
    <\/div>\n
    fail2ban-client status <jail_name><\/code><\/pre>\n
    \u4e3a\u4e86 example\uff0c\u5982\u679c\u4f60\u975e\u8981\u770b\u5230Fail2Ban\u7981\u6b62\u7684\u6240\u6709ssh\u767b\u5f55\u4e0d\u826f\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u4f7f\u7528\u3002 \u8f93\u51fa\u5c06\u663e\u793a\u5931\u8d25\u7684\u5c1d\u8bd5\u603b\u6570\u548c\u88ab\u7981\u6b62\u7684 IP \u603b\u6570\u3002<\/p>\n
    [email\u00a0protected]:~# fail2ban-client status sshd\r\nStatus for the jail: sshd\r\n|- Filter\r\n| |- Currently failed: 14\r\n| |- Total failed: 715\r\n| `- File list: \/var\/log\/auth.log\r\n`- Actions\r\n|- Currently banned: 7\r\n|- Total banned: 17\r\n`- Banned IP list: 177.47.115.67 118.130.133.110 68.183.62.73 202.65.154.110 106.12.102.114 61.184.247.3 218.92.1.150<\/code><\/pre>\n
    \u5c1d\u8bd5\u4ece\u5931\u8d25\u7684\u767b\u5f55\u901a\u8fc7 SSH \u767b\u5f55\u7684\u7cfb\u7edf\u5e94\u8be5\u5f97\u5230\u8fd9\u6837\u7684\u9519\u8bef<\/p>\n
    ssh: connect to host 93.233.73.133 port 22: Connection refused<\/code><\/pre>\n
    \u600e\u6837\u4f7f\u7528 Fail2Ban \u6c38\u4e45\u7981\u6b62 IP<\/h3>\n
    \u73b0\u5728\u60a8\u77e5\u9053 Fail2Ban \u5bf9 IP \u7684\u7981\u4ee4\u662f\u6682\u65f6\u7684\u3002 \u9ed8\u8ba4\u4e3a 10 \u5206\u949f\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u5728 10 \u5206\u949f\u540e\u518d\u6b21\u5c1d\u8bd5\u767b\u5f55\u3002<\/p>\n
    \u8fd9\u4f1a\u5e26\u6765\u5b89\u5168\u98ce\u9669\uff0c\u56e0\u4e3a\u653b\u51fb\u8005\u53ef\u4ee5\u4f7f\u7528\u811a\u672c\u5728 10 \u5206\u949f\u95f4\u9694\u540e\u5c1d\u8bd5\u767b\u5f55\u3002<\/p>\n
    <\/div>\n
    \u90a3\u4e48\uff0c\u60a8\u600e\u6837\u4f7f\u7528 Fail2Ban \u6c38\u4e45\u7981\u6b62\uff1f \u5bf9\u6b64\u6ca1\u6709\u660e\u786e\u7684\u7b54\u6848\u3002<\/p>\n
    \u4ece Fail2Ban 0.11 \u7248\u5f00\u59cb\uff0c\u00a0\u7981\u8a00\u65f6\u95f4\u4f1a\u81ea\u52a8\u8ba1\u7b97\u00a0\u5e76\u4e14\u6c38\u4e45IP\u7684\u7981\u7528\u65f6\u95f4\u5c06\u5448\u6307\u6570\u589e\u957f\u3002<\/p>\n
    \u4f46\u662f\u5982\u679c\u60a8\u68c0\u67e5\u60a8\u7684 Fail2Ban \u7248\u672c\uff0c\u60a8\u53ef\u80fd\u6b63\u5728\u8fd0\u884c 0.10 \u7248\u672c\u3002<\/p>\n
    fail2ban-server --version \r\nFail2Ban v0.10.2\r\nCopyright (c) 2004-2008 Cyril Jaquier, 2008- Fail2Ban Contributors\r\nCopyright of modifications held by their respective authors.\r\nLicensed under the GNU General Public License v2 (GPL).<\/code><\/pre>\n
    \u5728\u65e9\u671f\u7248\u672c\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u8d1f\u7981\u6b62\u65f6\u95f4 (bantime = -1)\uff0c\u8fd9\u76f8\u5f53\u4e8e\u6c38\u4e45\u7981\u6b62\uff0c\u4f46\u5982\u679c\u60a8\u5c1d\u8bd5\u4f7f\u7528\u6b64\u65b9\u6cd5\uff0c\u60a8\u53ef\u80fd\u4f1a\u770b\u5230\u7c7b\u4f3c\u201cStarting fail2ban: ERROR NOK: (\u201d\u6570\u636e\u5e93\u78c1\u76d8\u6620\u50cf\u683c\u5f0f\u9519\u8bef\u2019,)\u2019\u3002<\/p>\n
    \u4e00\u79cd\u4e0d\u592a\u5e72\u51c0\u7684\u89e3\u51b3\u65b9\u6cd5\u662f\u5c06\u7981\u4ee4\u65f6\u95f4\u589e\u52a0\u5230 1 \u5929\u30011 \u5468\u30011 \u4e2a\u6708\u6216 1 \u5e74\u3002 \u8fd9\u53ef\u4ee5\u907f\u514d\u95ee\u9898\uff0c\u76f4\u5230\u65b0\u7248\u672c\u5728\u60a8\u7684\u7cfb\u7edf\u4e0a\u53ef\u7528\u3002<\/p>\n
    \u600e\u6837\u89e3\u9664\u88ab Fail2Ban \u963b\u6b62\u7684 IP<\/h3>\n
    \u9996\u5148\u68c0\u67e5IP\u662f\u5426\u88ab\u963b\u6b62\u3002 \u7531\u4e8e Fail2Ban \u5728 iptables \u4e0a\u5de5\u4f5c\uff0c\u60a8\u53ef\u4ee5\u67e5\u770b iptable \u4ee5\u67e5\u770b\u60a8\u7684\u670d\u52a1\u5668\u7981\u6b62\u7684 IP\uff1a<\/p>\n
    iptables -n -L<\/code><\/pre>\n
    \u5982\u679c\u6709\u592a\u591a IP \u88ab\u7981\u6b62\uff0c\u60a8\u53ef\u80fd\u5fc5\u987b\u4f7f\u7528 grep \u547d\u4ee4\u3002<\/p>\n
    \u5982\u679c\u5728\u8f93\u51fa\u4e2d\u627e\u5230\u6307\u5b9a\u7684 IP \u5730\u5740\uff0c\u5219\u5b83\u88ab\u7981\u6b62\uff1a<\/p>\n
    \u56e0\u6b64\uff0c\u4e0b\u4e00\u6b65\u662f\u627e\u51fa\u54ea\u4e2a\u201c\u76d1\u72f1\u201d\u7981\u6b62\u4e86\u6240\u8ff0 IP\u3002 \u60a8\u5fc5\u987b\u5728\u6b64\u5904\u4f7f\u7528\u5e26\u6709 fail2ban \u65e5\u5fd7\u7684 Grep \u547d\u4ee4\u3002<\/p>\n
    \u6b63\u5982\u60a8\u5728\u4e0b\u9762\u7684\u8f93\u51fa\u4e2d\u770b\u5230\u7684\uff0c\u8be5 IP \u88ab sshd jail \u7981\u6b62\u3002<\/p>\n
    [email\u00a0protected]:~# grep -E \u2018Ban.*61.184.247.3\u2019 \/var\/log\/fail2ban.log\r\n2019-03-14 13:09:25,029 fail2ban.actions [25630]: NOTICE [sshd] Ban 61.184.247.3\r\n2019-03-14 13:52:56,745 fail2ban.actions [25630]: NOTICE [sshd] Ban 61.184.247.3<\/code><\/pre>\n
    \u73b0\u5728\u60a8\u77e5\u9053\u963b\u6b62 IP \u7684\u76d1\u72f1\u7684\u540d\u79f0\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 fail2ban-client \u53d6\u6d88\u5bf9 IP \u7684\u7981\u6b62\uff1a<\/p>\n
    fail2ban-client set <jail_name> unbanip <ip_address><\/code><\/pre>\n
    \u600e\u6837\u5728 Fail2Ban \u4e2d\u5c06 IP \u5217\u5165\u767d\u540d\u5355<\/h3>\n
    \u81ea\u5df1\u7981\u8a00\u53ef\u4e0d\u662f\u4ec0\u4e48\u597d\u4e8b\u5427\uff1f \u8981\u5ffd\u7565\u88ab Fail2Ban \u7684\u5f53\u524d\u4f1a\u8bdd\u7981\u6b62\u7684 IP \u5730\u5740\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\u5c06\u8be5 IP \u5217\u5165\u767d\u540d\u5355\uff1a<\/p>\n
    fail2ban-client set <JAIL_NAME> addignoreip <IP_Address><\/code><\/pre>\n
    \u4f60\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u5728 Linux \u4e2d\u627e\u5230\u4f60\u7684 IP \u5730\u5740\u3002 \u5c31\u6211\u800c\u8a00\uff0c\u5b83\u662f<\/p>\n
    sudo fail2ban-client set sshd addignoreip 203.93.83.113\r\nThese IP addresses\/networks are ignored:\r\n`- 203.93.83.113<\/code><\/pre>\n
    \u5982\u679c\u8981\u6c38\u4e45\u5c06 IP \u5217\u5165\u767d\u540d\u5355\uff0c\u5219\u5e94\u7f16\u8f91 jail \u914d\u7f6e\u6587\u4ef6\u3002 \u8f6c\u5230\u4e0a\u8ff0 jail \u90e8\u5206\u5e76\u50cf\u8fd9\u6837\u6dfb\u52a0 ignoreip \u884c\uff1a<\/p>\n
    ignoreip = 127.0.0.1\/8 <IP_TO_BE_WHITELISTED><\/code><\/pre>\n
    \u5982\u679c\u60a8\u60f3\u5c06\u7cfb\u7edf\u4e0a\u6240\u6709\u76d1\u72f1\u7684 IP \u5217\u5165\u767d\u540d\u5355\uff0c\u6700\u597d\u7f16\u8f91 \/etc\/fail2ban\/jail.local \u6587\u4ef6\u5e76\u5728 DEFAULT \u90e8\u5206\u4e0b\u6dfb\u52a0\u4e00\u884c\uff0c\u5c31\u50cf\u6211\u4eec\u4e0a\u9762\u770b\u5230\u7684\u90a3\u6837\u3002<\/p>\n
    \u60a8\u5fc5\u987b\u91cd\u65b0\u542f\u52a8 Fail2Ban \u624d\u80fd\u4f7f\u6b64\u66f4\u6539\u751f\u6548\u3002<\/p>\n
    \u76d1\u72f1\u600e\u6837\u67e5\u770bIP\u767d\u540d\u5355<\/h3>\n
    \u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u76d1\u72f1\u5217\u5165\u767d\u540d\u5355\u7684\u6240\u6709 IP\uff1a<\/p>\n
    fail2ban-client get <JAIL_NAME> ignoreip<\/code><\/pre>\n
    \u5b83\u5e94\u8be5\u663e\u793a\u8be5\u76d1\u72f1\u7684 Fail2Ban \u5ffd\u7565\u7684\u6240\u6709 IP\uff1a<\/p>\n
    sudo fail2ban-client set sshd addignoreip 203.93.83.113\r\nThese IP addresses\/networks are ignored:\r\n|- 127.0.0.0\/8\r\n|- ::1\r\n`- 203.93.83.113<\/code><\/pre>\n
    \u600e\u6837\u4ece Fail2Ban \u767d\u540d\u5355\u4e2d\u5220\u9664 IP<\/h3>\n
    \u5982\u679c\u60a8\u8981\u4ece\u67d0\u4e2a\u76d1\u72f1\u7684\u767d\u540d\u5355\u4e2d\u5220\u9664 IP\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
    fail2ban-client set <JAIL_NAME> delignoreip <IP_Address><\/code><\/pre>\n
    \u5982\u679c\u8981\u6c38\u4e45\u5220\u9664 IP\uff0c\u5219\u5e94\u7f16\u8f91 \/etc\/fail2ban\/jail.local \u6587\u4ef6\u3002<\/p>\n
    \u8fd8\u6709\u4ec0\u4e48\uff1f<\/strong><\/p>\n
    \u60a8\u53ef\u4ee5\u4f7f\u7528 Fail2Ban \u505a\u66f4\u591a\u4e8b\u60c5\u3002 \u672c\u6307\u5357\u4e3a\u60a8\u63d0\u4f9b\u4e86 Fail2Ban \u5165\u95e8\u7684\u57fa\u7840\u77e5\u8bc6\u3002 \u6211\u8fd8\u6ca1\u6709\u6d89\u53ca\u64cd\u4f5c\u3001\u90ae\u4ef6\u901a\u77e5\u3001\u8fc7\u6ee4\u5668\u7b49\u4e3b\u9898\u3002<\/p>\n
    \u4e00\u65e6\u60a8\u4e86\u89e3\u4e86 Fail2Ban \u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u60a8\u5c31\u53ef\u4ee5\u5f00\u59cb\u5bf9\u5176\u8fdb\u884c\u66f4\u591a\u63a2\u7d22\u3002 \u76ee\u524d\uff0c\u53ea\u9700\u4f7f\u7528\u5b83\u5e76\u4e3a Linux \u670d\u52a1\u5668\u4e0a\u7684 SSH \u6dfb\u52a0\u989d\u5916\u7684\u5b89\u5168\u5c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u4ec0\u4e48\u662f Fail2Ban\uff1f \u5982\u679c\u60a8\u5df2\u542f\u7528 SSH\uff0c\u8bf7\u68c0\u67e5\u60a8\u7684 Linux \u670d\u52a1\u5668\u7684\u767b\u5f55\u5386\u53f2\u8bb0\u5f55\u3002 \u60a8\u4f1a\u60ca\u8bb6\u5730\u770b […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-4226","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/4226","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4226"}],"version-history":[{"count":1,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/4226\/revisions"}],"predecessor-version":[{"id":4227,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/4226\/revisions\/4227"}],"wp:attachment":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4226"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}