550.ipfwlimit revision 87514 
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
23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 87514 2001-12-07 23:57:39Z cjc $
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
41TMP=/var/run/_secure.$$
42rc=0
43
44case "$daily_status_security_ipfwlimit_enable" in
45    [Yy][Ee][Ss])
46	IPFW_LOG_LIMIT=`sysctl -n net.inet.ip.fw.verbose_limit 2> /dev/null`
47	if [ $? -eq 0 -a "${IPFW_LOG_LIMIT}" -ne 0 ]; then
48	    ipfw -a l | grep " log " | perl -n -e \
49		'/^\d+\s+(\d+)/; print if ($1 >= '$IPFW_LOG_LIMIT')' > ${TMP}
50	    if [ -s "${TMP}" ]; then
51		rc=1
52		echo ""
53		echo 'ipfw log limit reached:'
54		cat ${TMP}
55	    fi
56	fi
57	rm -f ${TMP};;
58    *)	rc=0;;
59esac
60
61exit $rc
62