fail2ban/config/action.d/iptables-ipset.conf

# Fail2Ban configuration file
#
# Authors: Sergey G Brester (sebres), Daniel Black, Alexander Koeppe
#
# This is for ipset protocol 6 (and hopefully later) (ipset v6.14).
# Use ipset -V to see the protocol and version. Version 4 should use
# iptables-ipset-proto4.conf.
#
# This requires the program ipset which is normally in package called ipset.
#
# IPset was a feature introduced in the linux kernel 2.6.39 and 3.0.0 kernels.
#
# If you are running on an older kernel you make need to patch in external
# modules.
#

[INCLUDES]

before = iptables.conf

[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 = ipset -exist create <ipmset> hash:ip timeout <default-ipsettime> <familyopt>
              { %(_ipt_check_rule)s >/dev/null 2>&1; } || { <iptables> -I <chain> %(_ipt_chain_rule)s; }

# Option:  actionflush
# Notes.:  command executed once to flush IPS, by shutdown (resp. by stop of the jail or this action)
# Values:  CMD
#
actionflush = ipset flush <ipmset>

# Option:  actionstop
# Notes.:  command executed at the stop of jail (or at the end of Fail2Ban)
# Values:  CMD
#
actionstop = <iptables> -D <chain> %(_ipt_chain_rule)s
             <actionflush>
             ipset destroy <ipmset>

# 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 = ipset -exist add <ipmset> <ip> timeout <ipsettime>

# actionprolong = %(actionban)s

# 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 = ipset -exist del <ipmset> <ip>

# Several capabilities used internaly:

rule-jump = -m set --match-set <ipmset> src -j <blocktype>


[Init]

# Option: default-ipsettime
# Notes:  specifies default timeout in seconds (handled default ipset timeout only)
# Values:  [ NUM ]  Default: 0 (no timeout, managed by fail2ban by unban)
default-ipsettime = 0

# Option: ipsettime
# Notes:  specifies ticket timeout (handled ipset timeout only)
# Values:  [ NUM ]  Default: 0 (managed by fail2ban by unban)
ipsettime = 0

# expresion to caclulate timeout from bantime, example:
# banaction = %(known/banaction)s[ipsettime='<timeout-bantime>']
timeout-bantime = $([ "<bantime>" -le 2147483 ] && echo "<bantime>" || echo 0)

ipmset = f2b-<name>
familyopt =


[Init?family=inet6]

ipmset = f2b-<name>6
familyopt = family inet6