Anti-DDos Apache2 Fail2ban 正则表达式规则

Anti-DDos Apache2 Fail2ban 正则表达式规则

我已经启动并运行了 fail2ban,但是我的 Failregex 没有匹配任何内容,这是出了问题。

我想禁止的请求如下所示:

186.6.65.199 - - [06/May/2013:18:46:21 +0400] "GET / HTTP/1.1" 200 10488 "coolsearch37845.com/b/eve/618aef08......
186.6.65.199 - - [06/May/2013:18:46:21 +0400] "GET / HTTP/1.1" 200 10531 "liteapps.mcafee.com.......
186.6.65.199 - - [06/May/2013:18:46:21 +0400] "GET / HTTP/1.1" 200 10531 "jfueznxchgsef.pl......

我目前得到的:

/etc/fail2ban/filter.d/apache-attackers.conf:

failregex = <HOST> - - [[^]]+] "GET / HTTP/1.1"

/etc/fail2ban/jail.local:

[apache-attackers]
enabled = true
port    = http,https
filter  = apache-attackers
bantime = 25920000
logpath = /var/www/mysite/log/access.log
maxretry = 2
findtime = 1

当我做一个

fail2ban-regex /var/log/auth.log /etc/fail2ban/filter.d/apache-attackers.conf

我明白

Failregex
|- Regular expressions:
|  [1] <HOST> - - [[^]]+] "GET / HTTP/1.1"
|
`- Number of matches:
   [1] 0 match(es)

所以我的正则表达式失败了并且没有匹配任何内容。

我想要匹配在 1 秒内请求“GET / HTTP / 1.1”两次或更多次的任何 IP。

我做错了什么?

答案1

由于[]是正则表达式中的保留字符,因此必须对其进行转义:

<HOST> - - [[^]]+] "GET / HTTP/1.1"

应该是这样的:

<HOST> - - \[[^]]+\] "GET / HTTP/1.1"

或这个:

<HOST> - - [[][^]]+[]] "GET / HTTP/1.1"

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