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# Fail2Ban configuration file## Author: Nick Munger# Modified by: Ken Menzel# Daniel Black (start/stop)# Fabian Wenk (many ideas as per fail2ban users list)## Ensure firewall_enable="YES" in the top of /etc/rc.conf#[Definition]# Option: actionstart# Notes.: command executed once at the start of Fail2Ban.# Values: CMD#actionstart = ipfw show | fgrep -q 'table(<table>)' || ( ipfw show | awk 'BEGIN { b = 1 } { if ($1 <= b) { b = $1 + 1 } else { e = b } } END { if (e) exit e <br> else exit b }'; num=$?; ipfw -q add $num <blocktype> <block> from table\(<table>\) to me <port>; echo $num > "<startstatefile>" )# Option: actionstop# Notes.: command executed once at the end of Fail2Ban# Values: CMD#actionstop = [ ! -f <startstatefile> ] || ( read num < "<startstatefile>" <br> ipfw -q delete $num <br> rm "<startstatefile>" )# Option: actioncheck# Notes.: command executed once before each actionban command# Values: CMD#actioncheck =# Option: actionban# Notes.: command executed when banning an IP. Take care that the# command is executed with Fail2Ban user rights.# Tags: See jail.conf(5) man page# Values: CMD## requires an ipfw rule like "deny ip from table(1) to me"actionban = ipfw table <table> add <ip># Option: actionunban# Notes.: command executed when unbanning an IP. Take care that the# command is executed with Fail2Ban user rights.# Tags: See jail.conf(5) man page# Values: CMD#actionunban = ipfw table <table> delete <ip>[Init]# Option: table# Notes: The ipfw table to use. If a ipfw rule using this table already exists,# this action will not create a ipfw rule to block it and the following# options will have no effect.# Values: NUMtable = 1# Option: port# Notes.: Specifies port to monitor. Blank indicate block all ports.# Values: [ NUM | STRING ]#port =# Option: startstatefile# Notes: A file to indicate that the table rule that was added. Ensure it is unique per table.# Values: STRINGstartstatefile = /var/run/fail2ban/ipfw-started-table_<table># Option: block# Notes: This is how much to block.# Can be "ip", "tcp", "udp" or various other options.# Values: STRINGblock = ip# Option: blocktype# Notes.: How to block the traffic. Use a action from man 5 ipfw# Common values: deny, unreach port, reset# ACTION defination at the top of man ipfw for allowed values.# Values: STRING#blocktype = unreach port