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сервис_fail2ban [2022/03/09 11:39]
val [Интеграция fail2ban и cisco log]
сервис_fail2ban [2024/05/11 10:54]
val [Интеграция fail2ban и snort]
Line 6: Line 6:
  
   * [[https://​help.ubuntu.com/​community/​Fail2ban|Fail2ban]]   * [[https://​help.ubuntu.com/​community/​Fail2ban|Fail2ban]]
 +  * [[https://​bugs.launchpad.net/​ubuntu/​+source/​fail2ban/​+bug/​2055114|fail2ban is broken in 24.04 Noble]]
  
 <​code>​ <​code>​
 debian11# apt install iptables debian11# apt install iptables
 +debian12# apt install iptables rsyslog
  
 # apt install fail2ban # apt install fail2ban
 +
 +ubuntu24# wget https://​launchpad.net/​ubuntu/​+source/​fail2ban/​1.1.0-1/​+build/​28291332/​+files/​fail2ban_1.1.0-1_all.deb
 +ubuntu24# dpkg -i fail2ban_1.1.0-1_all.deb ​
 </​code>​ </​code>​
  
Line 30: Line 35:
 [sshd] [sshd]
 maxretry = 6 maxretry = 6
 +#ignoreip = 192.168.X.0/​24 192.168.100+X.0/​24
  
 [asterisk] [asterisk]
 enabled = true enabled = true
 maxretry = 3 maxretry = 3
 +#bantime = 30d
 +#action = iptables-allports[blocktype=DROP]
 +#action = route[blocktype=blackhole]
 </​code>​ </​code>​
  
Line 96: Line 105:
 bantime ​    = 300 bantime ​    = 300
 filter ​     = snort_filter filter ​     = snort_filter
-maxretry ​   = 1+maxretry ​   = 3
 logpath ​    = /​var/​log/​auth.log logpath ​    = /​var/​log/​auth.log
 #​action ​     = mail-admin #​action ​     = mail-admin
 +#​action ​     = iptables-allports
 #​action ​     = iptables-allports-forward #​action ​     = iptables-allports-forward
 #​action ​     = cisco-acl #​action ​     = cisco-acl
Line 108: Line 118:
 failregex = .*snort.*Priority:​ 1.*} <​HOST>​.* failregex = .*snort.*Priority:​ 1.*} <​HOST>​.*
 #        .*snort.*Priority:​ 2.*} <​HOST>​.* #        .*snort.*Priority:​ 2.*} <​HOST>​.*
 +
 +#failregex = .*Original Client IP: <​HOST>​.*
 </​code>​ </​code>​
  
Line 132: Line 144:
 dest = student dest = student
 </​code>​ </​code>​
 +
 +  * [[#​Запуск и отладка]]
  
 ==== Блокировка через iptables ==== ==== Блокировка через iptables ====
Line 153: Line 167:
 </​code>​ </​code>​
  
 +  * [[#​Запуск и отладка]]
 ==== Блокировка через cisco acl ==== ==== Блокировка через cisco acl ====
  
 <​code>​ <​code>​
 +server# rsh router show access-lists
 +</​code><​code>​
 # cat /​root/​cisco-acl-deny.sh # cat /​root/​cisco-acl-deny.sh
 </​code><​code>​ </​code><​code>​
Line 175: Line 192:
  ​permit udp any any  ​permit udp any any
  ​permit tcp any any established  ​permit tcp any any established
- ​deny ​  ip any any log+ ​deny ​  ip any any log
 end end
 </​code><​code>​ </​code><​code>​
Line 204: Line 221:
 </​code>​ </​code>​
  
 +  * [[#​Запуск и отладка]]
 ===== Отладка собственных фильтров ===== ===== Отладка собственных фильтров =====
  
сервис_fail2ban.txt · Last modified: 2024/05/11 15:47 by val