550.ipfwlimit revision 181531 
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
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9# 1. Redistributions of source code must retain the above copyright
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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
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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 181531 2008-08-10 18:11:24Z antoine $
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	IPFW_VERBOSE=`sysctl -n net.inet.ip.fw.verbose 2> /dev/null`
46	if [ $? -ne 0 ] || [ "$IPFW_VERBOSE" -eq 0 ]; then
47		exit 0
48	fi
49	TMP=`mktemp -t security`
50	ipfw -a list | grep " log " | \
51	grep '^[[:digit:]]\+[[:space:]]\+[[:digit:]]\+' | \
52	awk \
53		'{if ($6 == "logamount") {
54			if ($2 > $7)
55				{print $0}}
56		}' > ${TMP}
57
58	if [ -s "${TMP}" ]; then
59		rc=1
60		echo ""
61		echo 'ipfw log limit reached:'
62		cat ${TMP}
63	fi
64	rm -f ${TMP};;
65    *)	rc=0;;
66esac
67
68exit $rc
69