freebsd-dev/etc/periodic/security/520.pfdenied
Kurt Lidl 962942b5d6 Restrict 520.pfdenied to only list rules that blocked traffic.
Before this change, the 520.pfdenied script listed all rules that
matched /^block/ in the rule. Restrict the printed output to only
those rules that result in packets being dropped.

PR:		conf/187224
Approved by:	rpaulo (mentor)
Differential Revision:	https://reviews.freebsd.org/D4068
2015-11-05 17:37:14 +00:00

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#!/bin/sh -
#
# Copyright (c) 2004 The FreeBSD Project
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#
# If there is a global system configuration file, suck it in.
#
if [ -r /etc/defaults/periodic.conf ]
then
. /etc/defaults/periodic.conf
source_periodic_confs
fi
. /etc/periodic/security/security.functions
security_daily_compat_var security_status_pfdenied_enable
rc=0
if check_yesno_period security_status_pfdenied_enable
then
TMP=`mktemp -t security`
if pfctl -sr -v 2>/dev/null | nawk '{if (/^block/) {buf=$0; getline; gsub(" +"," ",$0); if ($5 > 0) print buf$0;} }' > ${TMP}; then
check_diff new_only pf ${TMP} "${host} pf denied packets:"
fi
rc=$?
rm -f ${TMP}
fi
exit $rc