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#!/bin/bash
# Example for a KILL_RUN_CMD in /etc/portsentry/portsentry.conf
# by Peter Gerhardt <peter.gerhardt@uni-konstanz.de>
# and Guido Guenther <guido.guenther@uni-konstanz.de>
#
# $Id: kill_cmd,v 1.3 2001/07/19 21:02:34 agx Exp $
# grep into /etc/services to check which port was scanned
MODE=${3/[sa]/} # get rid of s and a
SERVICEINFO=`grep "[[:space:]]$2/$MODE" /etc/services`
# can we get some info about the attacker?
FINGERINFO=`/usr/sbin/safe_finger -l @$1 2>/dev/null`
cat <<EOF | mail root -s "PortSentry: $1 scanned $HOSTNAME:$2/$3"
Someone @$1 scanned on host $HOSTNAME
the service (from /etc/services):
$SERVICEINFO
additional information (from reverse finger):
$FINGERINFO
Cheers,
Portsentry
EOF
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