550.ipfwlimit revision 142303 
1#!/bin/sh -
2#
3# Copyright (c) 2001  The FreeBSD Project
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10#    notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12#    notice, this list of conditions and the following disclaimer in the
13#    documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25# SUCH DAMAGE.
26#
27# $FreeBSD: head/etc/periodic/security/550.ipfwlimit 142303 2005-02-23 15:07:36Z ssouhlal $
28#
29
30# Show ipfw rules which have reached the log limit
31#
32
33# If there is a global system configuration file, suck it in.
34#
35if [ -r /etc/defaults/periodic.conf ]
36then
37    . /etc/defaults/periodic.conf
38    source_periodic_confs
39fi
40
41rc=0
42
43case "$daily_status_security_ipfwlimit_enable" in
44    [Yy][Ee][Ss])
45	TMP=`mktemp -t security`
46	IPFW_LOG_LIMIT=`sysctl -n net.inet.ip.fw.verbose_limit 2> /dev/null`
47	if [ $? -eq 0 ] && [ "${IPFW_LOG_LIMIT}" -ne 0 ]; then
48	    ipfw -a list | grep " log " | \
49	    grep '^[[:digit:]]\+[[:space:]]\+[[:digit:]]\+' | \
50	    awk -v limit="$IPFW_LOG_LIMIT" \
51		'{if ($2 > limit) {print $0}}' > ${TMP}
52	    if [ -s "${TMP}" ]; then
53		rc=1
54		echo ""
55		echo 'ipfw log limit reached:'
56		cat ${TMP}
57	    fi
58	fi
59	rm -f ${TMP};;
60    *)	rc=0;;
61esac
62
63exit $rc
64