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# Fail2Ban configuration file## Author: Nick Munger# Modified by: Andy Fragen and Daniel Black## Mod for OS X, using random rulenum as OSX ipfw doesn't include tables#[Definition]# Option: actionstart# Notes.: command executed once at the start of Fail2Ban.# Values: CMD#actionstart =# Option: actionstop# Notes.: command executed once at the end of Fail2Ban# Values: CMD#actionstop =# 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: <ip> IP address# Values: CMD#actionban = ipfw add <rulenum> set <setnum> <blocktype> log <block> from <ip> to <dst> <port># Option: actionunban# Notes.: command executed when unbanning an IP. Take care that the# command is executed with Fail2Ban user rights.# Tags: <ip> IP address# Values: CMD#actionunban = ipfw delete `ipfw -S list | grep -i 'set <setnum> <blocktype> log <block> from <ip> to <dst>' | awk '{print $1;}'`[Init]# Option: port# Notes.: specifies port to block. Can be blank however may require block="ip"# Values: [ NUM | STRING ]#port = ssh# Option: dst# Notes.: the local IP address of the network interface# Values: IP, any, me or anything support by ipfw as a dst#dst = me# Option: block# Notes: This is how much to block.# Can be "ip", "tcp", "udp" or various other options.# Values: STRINGblock = tcp# Option: blocktype# Notes.: How to block the traffic. Use a action from man 8 ipfw# Common values: deny, unreach port, reset# Values: STRING#blocktype = unreach port# Option: set number# Notes.: The ipset number this is added to.# Values: 0-31setnum = 10# Option: number for ipfw rule# Notes: This is meant to be automaticly generated and not overwritten# Values: Random value between 10000 and 12000rulenum="`echo $((RANDOM%%2000+10000))`"# Duplicate prevention mechanism#rulenum = "`a=$((RANDOM%%2000+10000)); while ipfw show | grep -q ^$a\ ; do a=$((RANDOM%%2000+10000)); done; echo $a`"