# Fail2Ban configuration file # # Author: Guido Bozzetto # Modified: Cyril Jaquier # # make "fail2ban-<name>" chain to match drop IP # make "fail2ban-<name>-log" chain to log and drop # insert a jump to fail2ban-<name> from -I INPUT if proto/port match # # $Revision: 668 $ # [Definition] # Option: actionstart # Notes.: command executed once at the start of Fail2Ban. # Values: CMD # actionstart = iptables -N fail2ban-<name> iptables -A fail2ban-<name> -j RETURN iptables -I INPUT 1 -p <protocol> -m multiport --dports <port> -j fail2ban-<name> iptables -N fail2ban-<name>-log iptables -I fail2ban-<name>-log -j LOG --log-prefix "$(expr fail2ban-<name> : '\(.\{1,23\}\)'):DROP " --log-level warning -m limit --limit 6/m --limit-burst 2 iptables -A fail2ban-<name>-log -j DROP # Option: actionstop # Notes.: command executed once at the end of Fail2Ban # Values: CMD # actionstop = iptables -D INPUT -p <protocol> -m multiport --dports <port> -j fail2ban-<name> iptables -F fail2ban-<name> iptables -F fail2ban-<name>-log iptables -X fail2ban-<name> iptables -X fail2ban-<name>-log # Option: actioncheck # Notes.: command executed once before each actionban command # Values: CMD # actioncheck = iptables -n -L fail2ban-<name>-log >/dev/null # Option: actionban # Notes.: command executed when banning an IP. Take care that the # command is executed with Fail2Ban user rights. # Tags: <ip> IP address # <failures> number of failures # <time> unix timestamp of the ban time # Values: CMD # actionban = iptables -I fail2ban-<name> 1 -s <ip> -j fail2ban-<name>-log # Option: actionunban # Notes.: command executed when unbanning an IP. Take care that the # command is executed with Fail2Ban user rights. # Tags: <ip> IP address # <failures> number of failures # <time> unix timestamp of the ban time # Values: CMD # actionunban = iptables -D fail2ban-<name> -s <ip> -j fail2ban-<name>-log [Init] # Defaut name of the chain # name = default # Option: port # Notes.: specifies port to monitor # Values: [ NUM | STRING ] Default: # port = ssh # Option: protocol # Notes.: internally used by config reader for interpolations. # Values: [ tcp | udp | icmp | all ] Default: tcp # protocol = tcp