<\/p>\n
### \ud83e\uddf1 \u4e00\u3001\u901a\u8fc7 **\u5b9d\u5854\u9762\u677f\u8bbe\u7f6e\u9632\u706b\u5899**<\/p>\n
**\u2705 \u4f18\u70b9\uff1a**<\/p>\n
* **\u64cd\u4f5c\u7b80\u5355\u3001\u754c\u9762\u5316**\uff1a\u70b9\u51e0\u4e0b\u5c31\u80fd\u5f00\u5173\u7aef\u53e3\u3001\u5c01IP\u3001\u9650\u5236\u533a\u57df\uff0c\u975e\u5e38\u9002\u5408\u4e0d\u60f3\u5199\u547d\u4ee4\u7684\u4eba\u3002
* **\u53ef\u89c6\u5316\u65e5\u5fd7**\uff1a\u80fd\u770b\u5230\u653b\u51fb\u6765\u6e90\u3001\u7aef\u53e3\u8bbf\u95ee\u8bb0\u5f55\u3002
* **\u9002\u5408\u591a\u670d\u52a1\u7ba1\u7406**\uff1a\u5982\u679c\u4f60\u672c\u8eab\u7528\u5b9d\u5854\u6765\u8dd1\u7f51\u7ad9\uff08nginx\/mysql\/php\u7b49\uff09\uff0c\u7edf\u4e00\u7ba1\u7406\u5f88\u65b9\u4fbf\u3002<\/p>\n
**\u26a0\ufe0f \u7f3a\u70b9\uff1a**<\/p>\n
* **\u4f9d\u8d56\u5b9d\u5854\u670d\u52a1**\uff1a\u9632\u706b\u5899\u670d\u52a1\u662f\u5b9d\u5854\u63d2\u4ef6\u7684\u4e00\u90e8\u5206\uff0c\u5982\u679c\u9762\u677f\u6302\u4e86\u3001\u6216\u8005\u63d2\u4ef6\u5f02\u5e38\uff0c\u9632\u706b\u5899\u89c4\u5219\u53ef\u80fd\u6682\u65f6\u5931\u6548\uff08\u867d\u7136\u5e95\u5c42iptables\u8fd8\u5728\uff09\u3002
* **\u89c4\u5219\u4e0d\u591f\u7075\u6d3b**\uff1a\u5982\u679c\u4f60\u8981\u505a\u6bd4\u8f83\u590d\u6742\u7684\u7b56\u7565\uff08\u4f8b\u5982\u53ea\u5141\u8bb8\u67d0\u4e9bIP\u6bb5\u8bbf\u95eeSSH\u3001\u7aef\u53e3\u8f6c\u53d1\u3001NAT\u7b49\uff09\uff0c\u5b9d\u5854\u9762\u677f\u7684\u8bbe\u7f6e\u4e0d\u591f\u7ec6\u3002<\/p>\n
**\u2705 \u9002\u5408\u4eba\u7fa4\uff1a**<\/p>\n
> \u4f60\u5df2\u7ecf\u5728\u7528\u5b9d\u5854\u7ba1\u7406 VPS\uff0c\u5e76\u4e14\u4e3b\u8981\u8dd1\u7f51\u7ad9\u6216\u5e94\u7528\uff0c\u4e0d\u60f3\u9891\u7e41 SSH \u64cd\u4f5c\u3002
>
> \u90a3\u4e48 **\u7528\u5b9d\u5854\u9632\u706b\u5899\u5c31\u5b8c\u5168\u53ef\u4ee5**\u3002<\/p>\n
—<\/p>\n
### \u2699\ufe0f \u4e8c\u3001\u901a\u8fc7 **\u4e00\u952e\u811a\u672c \/ iptables \/ firewalld**<\/p>\n
**\u2705 \u4f18\u70b9\uff1a**<\/p>\n
* **\u66f4\u5e95\u5c42\u3001\u66f4\u72ec\u7acb**\uff1a\u4e0d\u4f9d\u8d56\u5b9d\u5854\uff0c\u89c4\u5219\u76f4\u63a5\u5199\u5165\u7cfb\u7edf\u3002
* **\u7075\u6d3b\u6027\u6781\u9ad8**\uff1a\u53ef\u4ee5\u81ea\u5b9a\u4e49\u590d\u6742\u7b56\u7565\uff08\u4f8b\u5982\u7aef\u53e3\u767d\u540d\u5355\u3001\u6d41\u91cf\u9650\u5236\u3001DDoS\u57fa\u7840\u9632\u5fa1\u7b49\uff09\u3002
* **\u53ef\u79fb\u690d\u6027\u5f3a**\uff1a\u4e0d\u7ba1\u88c5\u4e0d\u88c5\u5b9d\u5854\uff0c\u89c4\u5219\u90fd\u80fd\u4fdd\u6301\u751f\u6548\u3002<\/p>\n
**\u26a0\ufe0f \u7f3a\u70b9\uff1a**<\/p>\n
* **\u64cd\u4f5c\u76f8\u5bf9\u590d\u6742**\uff1a\u51fa\u9519\u5bb9\u6613\u9501\u6b7b SSH\uff08\u6bd4\u5982\u628a22\u7aef\u53e3\u5173\u6389\uff09\u3002
* **\u4e00\u952e\u811a\u672c\u6765\u6e90\u9700\u8c28\u614e**\uff1a\u7f51\u7edc\u4e0a\u4e00\u4e9b\u201c\u9632\u706b\u5899\u4e00\u952e\u811a\u672c\u201d\u53ef\u80fd\u5e26\u540e\u95e8\u6216\u7be1\u6539\u8bbe\u7f6e\u3002<\/p>\n
**\u2705 \u9002\u5408\u4eba\u7fa4\uff1a**<\/p>\n
> \u60f3\u8981\u63a7\u5236\u66f4\u7ec6\u8282\u7684\u89c4\u5219\u3001\u6216\u8005\u4e0d\u6253\u7b97\u4f7f\u7528\u5b9d\u5854\u9762\u677f\u7684\u3002
>
> \u4f60\u5bf9\u547d\u4ee4\u884c\u6bd4\u8f83\u719f\u6089\uff0c\u6216\u8005\u60f3\u505a\u7cfb\u7edf\u5c42\u9762\u7684\u5b89\u5168\u4f18\u5316\u3002<\/p>\n
—<\/p>\n
### \u2705 \u6211\u7684\u5efa\u8bae\uff08\u7ed3\u5408\u4f60\u8bf4\u7684\u60c5\u51b5\uff09\uff1a<\/p>\n
\u65e2\u7136\u4f60**\u66f4\u719f\u6089\u5b9d\u5854\u9762\u677f**\uff0c\u90a3\u5b8c\u5168\u53ef\u4ee5\uff1a<\/p>\n
1. **\u5148\u7528\u5b9d\u5854\u9632\u706b\u5899\u63d2\u4ef6\u8bbe\u7f6e\u597d\u57fa\u672c\u89c4\u5219**\uff08\u5f00\u653e\u5fc5\u8981\u7aef\u53e3\u3001\u7981\u7528\u6ca1\u7528\u7684\u7aef\u53e3\uff09\u3002
2. \u7136\u540e\u5728\u7cfb\u7edf\u5c42\u9762\u518d\u505a\u4e00\u70b9**\u8865\u5145\u914d\u7f6e**\uff0c\u4f8b\u5982\uff1a<\/p>\n
* \u68c0\u67e5 `iptables -L -n` \u786e\u8ba4\u89c4\u5219\u751f\u6548\uff1b
* \u624b\u52a8\u9650\u5236 SSH \u767b\u5f55 IP\uff1b
* \u542f\u7528 fail2ban \u6216\u767b\u5f55\u544a\u8b66\uff08\u9632\u66b4\u529b\u7834\u89e3\uff09\u3002<\/p>\n
—<\/p>\n
\u5f88\u591a\u4eba\u88c5\u4e86 **Fail2ban\uff08\u9632\u66b4\u529b\u7834\u89e3\u5de5\u5177\uff09** \u5728\u5b9d\u5854\u9762\u677f\u91cc\uff0c\u4ee5\u4e3a\u5b83\u53ea\u4fdd\u62a4\u5b9d\u5854\u767b\u5f55\u754c\u9762\uff0c\u5176\u5b9e\u8fd9\u8981\u770b**\u4f60\u662f\u600e\u4e48\u5b89\u88c5\u548c\u914d\u7f6e\u7684**\u3002<\/p>\n
\u6211\u6765\u7ed9\u4f60\u8be6\u7ec6\u89e3\u91ca\u4e00\u4e0b \ud83d\udc47<\/p>\n
—<\/p>\n
## \ud83e\udde9 \u4e00\u3001Fail2ban \u7684\u5de5\u4f5c\u539f\u7406\uff08\u901a\u4fd7\u8bb2\uff09<\/p>\n
Fail2ban \u672c\u8d28\u4e0a\u662f\uff1a<\/p>\n
> \u901a\u8fc7\u76d1\u63a7\u65e5\u5fd7\uff08\u5982 SSH\u3001Nginx\u3001\u5b9d\u5854\u767b\u5f55\u65e5\u5fd7\u7b49\uff09\uff0c\u81ea\u52a8\u5c01\u7981\u591a\u6b21\u5931\u8d25\u767b\u5f55\u7684 IP\u3002<\/p>\n
\u5b83\u4f1a\u628a\u8fd9\u4e9b\u201c\u591a\u6b21\u767b\u5f55\u5931\u8d25\u7684IP\u201d\u4ea4\u7ed9\u7cfb\u7edf\u9632\u706b\u5899\uff08\u5982 iptables\/firewalld\uff09\u62c9\u9ed1\u4e00\u6bb5\u65f6\u95f4\u6216\u6c38\u4e45\u5c01\u7981\u3002<\/p>\n
—<\/p>\n
## \ud83e\uddf1 \u4e8c\u3001\u5982\u679c\u4f60\u662f\u901a\u8fc7 **\u5b9d\u5854\u63d2\u4ef6** \u5b89\u88c5\u7684 Fail2ban<\/p>\n
\u90a3\u6709\u4e24\u79cd\u60c5\u51b5\uff1a<\/p>\n
### \ud83d\udd39 1. **\u9ed8\u8ba4\u914d\u7f6e\uff08\u5927\u591a\u6570\u4eba\uff09**<\/p>\n
\u5982\u679c\u4f60**\u76f4\u63a5\u7528\u5b9d\u5854\u5e94\u7528\u5546\u5e97\u5b89\u88c5 Fail2ban \u63d2\u4ef6**\uff0c
\u90a3\u5b83\u9ed8\u8ba4\uff1a<\/p>\n
* \u4e3b\u8981\u4fdd\u62a4\u5b9d\u5854\u9762\u677f\u7684\u767b\u5f55\uff08`\/www\/server\/panel\/logs\/`\uff09\uff1b
* \u4ee5\u53ca SSH \u767b\u5f55\uff08`\/var\/log\/auth.log` \u6216 `\/var\/log\/secure`\uff09\uff1b
* \u5c01\u7981\u662f\u4f5c\u7528\u4e8e\u6574\u4e2a\u7cfb\u7edf\u9632\u706b\u5899\u7684\uff08iptables\/firewalld\uff09\u3002<\/p>\n
\u2705 \u6240\u4ee5\u5b9e\u9645\u4e0a\uff0c\u5b83\u5bf9 **\u6574\u4e2a VPS \u90fd\u8d77\u4f5c\u7528**\uff0c\u4e0d\u53ea\u662f\u5b9d\u5854\u754c\u9762\uff01<\/p>\n
\u4e5f\u5c31\u662f\u8bf4\uff1a<\/p>\n
* \u6709\u4eba\u66b4\u529b\u7834\u89e3 SSH\uff0c\u4e5f\u4f1a\u88ab ban\uff1b
* \u6709\u4eba\u66b4\u529b\u5c1d\u8bd5\u767b\u5f55\u5b9d\u5854\u9762\u677f\uff0c\u4e5f\u4f1a\u88ab ban\uff1b
* \u88ab ban \u7684 IP\uff0c\u4e0d\u4ec5\u4e0d\u80fd\u8bbf\u95ee\u5b9d\u5854\u9762\u677f\uff0c\u4e5f\u8fde SSH \u90fd\u8fdb\u4e0d\u53bb\u4e86\u3002<\/p>\n
—<\/p>\n
### \ud83d\udd39 2. **\u81ea\u5b9a\u4e49\u589e\u5f3a\u914d\u7f6e**<\/p>\n
\u5982\u679c\u4f60\u6253\u5f00\u4e86\u63d2\u4ef6\u7684\u201c\u9ad8\u7ea7\u8bbe\u7f6e\u201d\uff0c
\u4f60\u53ef\u4ee5\u5728\u5b9d\u5854\u9762\u677f\u4e2d\u770b\u5230\u76d1\u63a7\u89c4\u5219\uff08jail \u914d\u7f6e\uff09\uff0c\u4f8b\u5982\uff1a<\/p>\n
“`bash
[sshd]
enabled = true
port = ssh
filter = sshd
logpath = \/var\/log\/secure
maxretry = 5<\/p>\n
[btpanel]
enabled = true
filter = btpanel
logpath = \/www\/server\/panel\/logs\/login.log
maxretry = 3
“`<\/p>\n
\u4f60\u4e5f\u53ef\u4ee5\u81ea\u5df1\u6dfb\u52a0\uff1a<\/p>\n
* `[nginx-auth]` \u4fdd\u62a4\u7f51\u7ad9\u540e\u53f0\uff1b
* `[mysql-auth]` \u4fdd\u62a4\u8fdc\u7a0b MySQL \u767b\u5f55\uff1b
* `[pure-ftpd]` \u4fdd\u62a4 FTP \u767b\u5f55\u3002<\/p>\n
—<\/p>\n
## \u2699\ufe0f \u4e09\u3001\u9a8c\u8bc1\u65b9\u6cd5\uff08\u770b\u770b\u5b83\u5230\u5e95\u4fdd\u62a4\u54ea\u4e9b\u670d\u52a1\uff09<\/p>\n
\u4f60\u53ef\u4ee5\u5728 SSH \u6267\u884c\uff1a<\/p>\n
“`bash
fail2ban-client status
“`<\/p>\n
\u5b83\u4f1a\u663e\u793a\u7c7b\u4f3c\uff1a<\/p>\n
“`
Status
|- Number of jail: 3
`- Jail list: sshd, btpanel, nginx-auth
“`<\/p>\n
\u8fd9\u8bf4\u660e\u5b83\u6b63\u5728\u540c\u65f6\u4fdd\u62a4 **SSH**\u3001**\u5b9d\u5854\u9762\u677f** \u548c **Nginx \u767b\u5f55**\u3002<\/p>\n
\u5982\u679c\u4f60\u53ea\u770b\u5230 `btpanel`\uff0c\u90a3\u8bf4\u660e\u76ee\u524d\u5b83\u53ea\u4fdd\u62a4\u5b9d\u5854\u767b\u5f55\u754c\u9762\uff1b
\u4f60\u53ef\u4ee5\u518d\u6267\u884c\uff1a<\/p>\n
“`bash
fail2ban-client status sshd
“`<\/p>\n
\u5982\u679c\u6ca1\u62a5\u9519\uff0c\u8bf4\u660e SSH \u4e5f\u5728\u4fdd\u62a4\u8303\u56f4\u5185\u3002<\/p>\n
—<\/p>\n
## \u2705 \u603b\u7ed3\u7ed3\u8bba<\/p>\n
| \u573a\u666f | \u4fdd\u62a4\u8303\u56f4 | \u5efa\u8bae |
| ——————– | ———————- | ———- |
| \u901a\u8fc7\u5b9d\u5854\u9762\u677f\u63d2\u4ef6\u9ed8\u8ba4\u5b89\u88c5 | \u4e00\u822c\u4fdd\u62a4\u5b9d\u5854\u9762\u677f\u548cSSH | \u2705 \u8db3\u591f\u5b89\u5168 |
| \u81ea\u5b9a\u4e49\u914d\u7f6e\uff08\u7f16\u8f91 jail.local\uff09 | \u53ef\u6269\u5c55\u5230 Nginx\u3001FTP\u3001MySQL \u7b49 | \ud83d\udd12 \u63a8\u8350\u9ad8\u7ea7\u7528\u6237 |
| \u624b\u52a8\u5b89\u88c5\uff08\u547d\u4ee4\u884c\u7248\uff09 | \u5168\u7cfb\u7edf\u63a7\u5236\u6700\u5f3a | \u26a0\ufe0f \u9700\u719f\u6089\u914d\u7f6e\u6587\u4ef6 |<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
### \ud83e\uddf1 \u4e00\u3001\u901a\u8fc7 **\u5b9d\u5854\u9762\u677f\u8bbe\u7f6e\u9632\u706b\u5899** **\u2705 \u4f18\u70b9\uff1a** * **\u64cd\u4f5c\u7b80\u5355\u3001\u754c\u9762\u5316**\uff1a\u70b9\u51e0\u4e0b\u5c31\u80fd\u5f00\u5173\u7aef\u53e3\u3001\u5c01IP\u3001\u9650\u5236\u533a\u57df\uff0c\u975e\u5e38\u9002\u5408\u4e0d\u60f3\u5199\u547d\u4ee4\u7684\u4eba\u3002* **\u53ef\u89c6\u5316\u65e5\u5fd7**\uff1a\u80fd\u770b\u5230\u653b\u51fb\u6765\u6e90\u3001\u7aef\u53e3\u8bbf\u95ee\u8bb0\u5f55\u3002* **\u9002…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[128],"tags":[923,847,924,220,509],"topic":[344],"class_list":["post-642701","post","type-post","status-publish","format-standard","hentry","category-128","tag-fail2ban","tag-vps","tag-924","tag-220","tag-509","topic-fangfalun"],"_links":{"self":[{"href":"http:\/\/puo.cn\/index.php?rest_route=\/wp\/v2\/posts\/642701","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/puo.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/puo.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/puo.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/puo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=642701"}],"version-history":[{"count":3,"href":"http:\/\/puo.cn\/index.php?rest_route=\/wp\/v2\/posts\/642701\/revisions"}],"predecessor-version":[{"id":655530,"href":"http:\/\/puo.cn\/index.php?rest_route=\/wp\/v2\/posts\/642701\/revisions\/655530"}],"wp:attachment":[{"href":"http:\/\/puo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=642701"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/puo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=642701"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/puo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=642701"},{"taxonomy":"topic","embeddable":true,"href":"http:\/\/puo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftopic&post=642701"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}