fail2ban/config/action.d/ipfw.conf

# Fail2Ban configuration file
#
# Author: Nick Munger
# Modified by: Cyril Jaquier
#
#

[Definition]

# Option:  actionstart
# Notes.:  command executed on demand at the first ban (or at the start of Fail2Ban if actionstart_on_demand is set to false).
# Values:  CMD
#
actionstart = 


# Option:  actionstop
# Notes.:  command executed at the stop of jail (or 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:    See jail.conf(5) man page
# Values:  CMD
#
actionban = ipfw add <blocktype> tcp from <ip> to <localhost> <port>


# 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 delete `ipfw list | grep -i "[^0-9]<ip>[^0-9]" | awk '{print $1;}'`

[Init]

# Option:  port
# Notes.:  specifies port to monitor
# Values:  [ NUM | STRING ]
#
port = ssh

# Option:  localhost
# Notes.:  the local IP address of the network interface
# Values:  IP
#
localhost = 127.0.0.1


# Option:  blocktype
# Notes.:  How to block the traffic. Use a action from man 5 ipfw
#          Common values: deny, unreach port, reset
# Values:  STRING
#
blocktype = unreach port