fail2ban/config/action.d/firewallcmd-new.conf

# Fail2Ban configuration file
#
# Because of the --remove-rules in stop this action requires firewalld-0.3.8+

[INCLUDES]

before = iptables-common.conf

[Definition]

actionstart = firewall-cmd --direct --add-chain ipv4 filter f2b-<name>
              firewall-cmd --direct --add-rule ipv4 filter f2b-<name> 1000 -j RETURN
              firewall-cmd --direct --add-rule ipv4 filter <chain> 0 -m state --state NEW -p <protocol> -m multiport --dports <port> -j f2b-<name>

actionstop = firewall-cmd --direct --remove-rule ipv4 filter <chain> 0 -m state --state NEW -p <protocol> -m multiport --dports <port> -j f2b-<name>
             firewall-cmd --direct --remove-rules ipv4 filter f2b-<name>
             firewall-cmd --direct --remove-chain ipv4 filter f2b-<name>

actioncheck = firewall-cmd --direct --get-chains ipv4 filter | grep -q 'f2b-<name>$'

actionban = firewall-cmd --direct --add-rule ipv4 filter f2b-<name> 0 -s <ip> -j <blocktype>

actionunban = firewall-cmd --direct --remove-rule ipv4 filter f2b-<name> 0 -s <ip> -j <blocktype>

[Init]

# Option:  chain
# Notes    specifies the iptables chain to which the fail2ban rules should be
#          added
# Values:  [ STRING ]
#
chain = INPUT_direct

# DEV NOTES:
#
# Author: Edgar Hoch
# Copied from iptables-new.conf and modified for use with firewalld by Edgar Hoch.
#  It uses "firewall-cmd" instead of "iptables".
#
# Output:
# 
# $ firewall-cmd --direct --add-chain ipv4 filter fail2ban-name
# success
# $ firewall-cmd --direct --add-rule ipv4 filter fail2ban-name 1000 -j RETURN
# success
# $ sudo firewall-cmd --direct --add-rule ipv4 filter INPUT_direct 0 -m state --state NEW -p tcp -m multiport --dports 22 -j fail2ban-name
# success
# $ firewall-cmd --direct --get-chains ipv4 filter
# fail2ban-name
# $ firewall-cmd --direct --get-chains ipv4 filter  | od -h
# 0000000 6166 6c69 6232 6e61 6e2d 6d61 0a65
# $ firewall-cmd --direct --get-chains ipv4 filter | grep -Eq 'fail2ban-name( |$)' ; echo $?
# 0
# $ firewall-cmd -V
# 0.3.8