Edit: /etc/fail2ban/action.d/bsd-ipfw.conf (3226B)
# 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 on demand at the first ban (or at the start of Fail2Ban if actionstart_on_demand is set to false).
# Values: CMD
#
actionstart = ipfw show | fgrep -c -m 1 -s 'table(
)' > /dev/null 2>&1 || (
num=$(ipfw show | awk 'BEGIN { b = } { if ($1 == b) { b = $1 + 1 } } END { print b }');
ipfw -q add "$num" from table\(\) to me ; echo "$num" > ""
)
# Option: actionstop
# Notes.: command executed at the stop of jail (or at the end of Fail2Ban)
# Values: CMD
#
actionstop = [ ! -f ] || ( read num < ""
ipfw -q delete $num
rm "" )
# Option: actioncheck
# Notes.: command executed once before each actionban command
# Values: CMD
#
actioncheck =
# Option: actionban
# Notes.: command executed when banning an IP. Take care that the
# command is executed with Fail2Ban user rights.
# Tags: See jail.conf(5) man page
# Values: CMD
#
# requires an ipfw rule like "deny ip from table(1) to me"
actionban = e=`ipfw table add 2>&1`; x=$?; [ $x -eq 0 -o "$e" = 'ipfw: setsockopt(IP_FW_TABLE_XADD): File exists' ] || echo "$e" | grep -q "record already exists" || { echo "$e" 1>&2; exit $x; }
# Option: actionunban
# Notes.: command executed when unbanning an IP. Take care that the
# command is executed with Fail2Ban user rights.
# Tags: See jail.conf(5) man page
# Values: CMD
#
actionunban = e=`ipfw table delete 2>&1`; x=$?; [ $x -eq 0 -o "$e" = 'ipfw: setsockopt(IP_FW_TABLE_XDEL): No such process' ] || echo "$e" | grep -q "record not found" || { echo "$e" 1>&2; exit $x; }
[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: NUM
table = 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: STRING
startstatefile = /var/run/fail2ban/ipfw-started-table_
# Option: block
# Notes: This is how much to block.
# Can be "ip", "tcp", "udp" or various other options.
# Values: STRING
block = 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
# Option: lowest_rule_num
# Notes: When fail2ban starts with action and there is no rule for the given table yet
# then fail2ban will start looking for an empty slot starting with this rule number.
# Values: NUM
lowest_rule_num = 111