# Fail2Ban configuration file
#
# Author: Russell Odom <[email protected]>
# Adapted for sendmail by: Mike A. Leonetti
# Sends a complaint e-mail to addresses listed in the whois record for an
# offending IP address.
#
# You should provide the <logpath> in the jail config - lines from the log
# matching the given IP address will be provided in the complaint as evidence.
#
# Note that we will try to use e-mail addresses that are most likely to be abuse
# addresses (based on various keywords). If they aren't found we fall back on
# any other addresses found in the whois record, with a few exceptions.
# If no addresses are found, no e-mail is sent.
#
# $Revision: 717 $
#

[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
#          <failures>  number of failures
#          <failtime>  unix timestamp of the last failure
#          <bantime>  unix timestamp of the ban time
# Values:  CMD
#
actionban = ADDRESSES=`whois <ip> | perl -e 'while (<STDIN>) { next if /^changed|@(ripe|apnic)\.net/io; $m += (/abuse|trouble:|report|spam|security/io?3:0); if (/([a-z0-9_\-\.+]+@[a-z0-9\-]+(\.[[a-z0-9\-]+)+)/io) { while (s/([a-z0-9_\-\.+]+@[a-z0-9\-]+(\.[[a-z0-9\-]+)+)//io) { if ($m) { $a{lc($1)}=$m } else { $b{lc($1)}=$m } } $m=0 } else { $m && --$m } } if (%%a) {print join(",",keys(%%a))} else {print join(",",keys(%%b))}'`
	    IP=<ip>
            if [ ! -z "$ADDRESSES" ]; then
		printf %%b "Subject: Suspected <name> abuse attempt from <ip>
		From: <sendername> <<sender>>
		To: $ADDRESSES
		Cc: <dest>
		Reply-To: <dest>

		<message>\n\n`date '+Note: Local timezone is %%z (%%Z)'`\n`grep '<ip>' <logpath>`" | /usr/sbin/sendmail -f <sender> $ADDRESSES <dest>
            fi

# Option:  actionunban
# Notes.:  command executed when unbanning an IP. Take care that the
#          command is executed with Fail2Ban user rights.
# Tags:    <ip>  IP address
#          <bantime>  unix timestamp of the ban time
#          <unbantime>  unix timestamp of the unban time
# Values:  CMD
#
actionunban =

[Init]
message = Dear Sir/Madam,\n\nOur monitoring system, Fail2ban, has detected potential abuse from the IP address $IP. According to a whois lookup, this IP address belongs to your network. We would appreciate if you would investigate and take action as appropriate.\n\nLog lines are given below, but please ask if you require any further information.\n\n(If you are not the correct person to contact about this please accept our apologies - your e-mail address was extracted from the whois record by an automated process. This mail was generated by Fail2Ban and was sent from an unmonitored account.)\n

# Path to the log files which contain relevant lines for the abuser IP
#
#logpath = /dev/null

# Defaut name of the chain
#
name = default

# Option:  sender
# Notes.:  E-mail address that the e-mail will appear to come from
# Values:  String (Default: root@fail2ban)
sender = fail2ban

# Option:  sendername
# Notes.:  Full name that the e-mail will appear to come from
# Values:  String (Default: Fail2ban)
sendername = Fail2ban

# Destination/Addressee of the mail
#
dest = root