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使用firewalld进行Fail2ban

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使用firewalld进行Fail2ban

我正在尝试配置fail2ban以阻止来自本地主机的ssh。 Fail2ban 安装在带有防火墙的 CentOS 7 上（Linux 3.10.0-229.4.2.el7.x86_64 x86_64 ）。我已将jail.conf复制到jail.local，我在jail.local中更改了以下参数：

banaction = firewallcmd-new
[sshd]
enabled = true
maxretry = 5
port = ssh
logpath = /var/log/secure
action = firewallcmd-ipset

我没有结果。任何想法 ？

一些日志信息：

2ban.filter         [2489]: INFO    Added logfile = /var/log/secure
2015-06-23 07:21:33,439 fail2ban.filter         [2489]: INFO    Set maxRetry = 3
2015-06-23 07:21:33,440 fail2ban.filter         [2489]: INFO    Set jail log file encoding to UTF-8
2015-06-23 07:21:33,441 fail2ban.actions        [2489]: INFO    Set banTime = 86400
2015-06-23 07:21:33,442 fail2ban.filter         [2489]: INFO    Set findtime = 600
2015-06-23 07:21:33,442 fail2ban.filter         [2489]: INFO    Set maxlines = 10
2015-06-23 07:21:33,501 fail2ban.server         [2489]: INFO    Jail sshd is not a JournalFilter instance
2015-06-23 07:21:33,599 fail2ban.jail           [2489]: INFO    Jail 'sshd' started

并且 SELinux 被禁用。

action.d/firewallcmd-ipset.conf 文件

[INCLUDES]

before = iptables-common.conf

[Definition]

actionstart = ipset create fail2ban-<name> hash:ip timeout <bantime>
              firewall-cmd --direct --add-rule ipv4 filter <chain> 0 -p <protocol> -m multiport --dports <port> -m set --match-set fail2ban-<name> src -j <blocktype>

actionstop = firewall-cmd --direct --remove-rule ipv4 filter <chain> 0 -p <protocol> -m multiport --dports <port> -m set --match-set fail2ban-<name> src -j <blocktype>
             ipset flush fail2ban-<name>
             ipset destroy fail2ban-<name>

actionban = ipset add fail2ban-<name> <ip> timeout <bantime> -exist

actionunban = ipset del fail2ban-<name> <ip> -exist

[Init]

# Option:  chain
# Notes    specifies the iptables chain to which the fail2ban rules should be
#          added
# Values:  [ STRING ]
#
chain = INPUT_direct

# Option: bantime
# Notes:  specifies the bantime in seconds (handled internally rather than by fail2ban)
# Values:  [ NUM ]  Default: 600

bantime = 600


# DEV NOTES:
#
# Author: Edgar Hoch and Daniel Black
# firewallcmd-new / iptables-ipset-proto6 combined for maximium goodness

答案1

我在这里猜测了一下，因为我没有足够的信息来了解发生了什么。但我会尝试这样的事情：

fail2ban-regex --print-all-missed /var/log/secure /etc/fail2ban/filter.d/sshd.conf

看看它是否找到了某些东西或者可能缺少哪些行。我假设 /var/log/secure 是 sshd 打印登录失败的地方。在我的基于 debian 的系统上它是 /var/log/auth.log 。

我在监狱里也有一个 bantime 和 findtime。

bantime  = 86400
findtime = 86400

也许你没有得到任何东西，因为你没有告诉它查看的时间窗口？

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