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сервис_fail2ban [2020/06/26 14:04] val [Блокировка через iptables] |
сервис_fail2ban [2021/02/23 17:25] val [Блокировка через cisco acl] |
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* [[https://thefragens.com/2010/11/checking-fail2ban-regex/|Checking Fail2ban regex]] | * [[https://thefragens.com/2010/11/checking-fail2ban-regex/|Checking Fail2ban regex]] | ||
+ | * [[https://forum.yunohost.org/t/fail2ban-high-cpu-usage/2439|Fail2ban high CPU usage]] | ||
===== Установка ===== | ===== Установка ===== | ||
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<code> | <code> | ||
# apt install fail2ban | # apt install fail2ban | ||
- | |||
- | # cd /etc/fail2ban/ | ||
</code> | </code> | ||
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<code> | <code> | ||
- | # cat jail.conf | + | # cat /etc/fail2ban/jail.conf |
+ | |||
+ | # ls /etc/fail2ban/jail.d/ | ||
- | # ls jail.d/ | + | # cat /etc/fail2ban/jail.d/defaults-debian.conf |
- | # cat filter.d/sshd.conf | + | # cat /etc/fail2ban/filter.d/sshd.conf |
- | # cat filter.d/asterisk.conf | + | # cat /etc/fail2ban/filter.d/asterisk.conf |
</code><code> | </code><code> | ||
- | # cat jail.local | + | # cat /etc/fail2ban/jail.local |
</code><code> | </code><code> | ||
[sshd] | [sshd] | ||
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[asterisk] | [asterisk] | ||
enabled = true | enabled = true | ||
- | maxretry = 3 | + | maxretry = 3 |
</code> | </code> | ||
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# cat /etc/fail2ban/filter.d/cisco-change-config.conf | # cat /etc/fail2ban/filter.d/cisco-change-config.conf | ||
</code><code> | </code><code> | ||
- | [INCLUDES] | ||
- | |||
[Definition] | [Definition] | ||
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maxretry = 1 | maxretry = 1 | ||
logpath = /var/log/auth.log | logpath = /var/log/auth.log | ||
+ | #action = mail-admin | ||
#action = iptables-allports-forward | #action = iptables-allports-forward | ||
#action = cisco-acl | #action = cisco-acl | ||
Line 99: | Line 99: | ||
# cat /etc/fail2ban/filter.d/snort_filter.conf | # cat /etc/fail2ban/filter.d/snort_filter.conf | ||
</code><code> | </code><code> | ||
- | [INCLUDES] | ||
- | |||
[Definition] | [Definition] | ||
failregex = .*snort.*Priority: 1.*} <HOST>.* | failregex = .*snort.*Priority: 1.*} <HOST>.* | ||
# .*snort.*Priority: 2.*} <HOST>.* | # .*snort.*Priority: 2.*} <HOST>.* | ||
+ | </code> | ||
+ | |||
+ | ==== Уведомление по email ==== | ||
+ | <code> | ||
+ | # cat /etc/fail2ban/action.d/mail-admin.conf | ||
+ | </code><code> | ||
+ | [Definition] | ||
+ | |||
+ | actionban = printf %%b "Hi,\n | ||
+ | Ban this <ip> | ||
+ | Regards,\n | ||
+ | Fail2Ban"|mail -s "[Fail2Ban] Ban <name> <ip>" <dest> | ||
+ | |||
+ | actionunban = printf %%b "Hi,\n | ||
+ | Unban this <ip> | ||
+ | Regards,\n | ||
+ | Fail2Ban"|mail -s "[Fail2Ban] Unban <name> <ip>" <dest> | ||
+ | |||
+ | [Init] | ||
+ | |||
+ | name = mail-admin | ||
- | ignoreregex = | + | dest = student |
</code> | </code> | ||
Line 176: | Line 195: | ||
actionunban = /root/cisco-change-firewall.sh | actionunban = /root/cisco-change-firewall.sh | ||
+ | # if atack from DNS) | ||
+ | #actionunban = echo /root/cisco-change-firewall.sh | at now + 1 min | ||
</code> | </code> | ||