xref: /freebsd-11-stable/etc/periodic/security/550.ipfwlimit

#!/bin/sh -
#
# Copyright (c) 2001  The FreeBSD Project
# All rights reserved.
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# modification, are permitted provided that the following conditions
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# 2. Redistributions in binary form must reproduce the above copyright
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# $FreeBSD: head/etc/periodic/security/550.ipfwlimit 149989 2005-09-11 14:29:58Z maxim $
#

# Show ipfw rules which have reached the log limit
#

# 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

rc=0

case "$daily_status_security_ipfwlimit_enable" in
    [Yy][Ee][Ss])
	IPFW_LOG_LIMIT=`sysctl -n net.inet.ip.fw.verbose_limit 2> /dev/null`
	if [ $? -ne 0 ]; then
		exit 0
	fi
	TMP=`mktemp -t security`
	ipfw -a list | grep " log " | \
	grep '^[[:digit:]]\+[[:space:]]\+[[:digit:]]\+' | \
	awk -v limit="$IPFW_LOG_LIMIT" \
		'{if ($6 == "logamount") {
			if ($2 > $7)
				{print $0}
		} else {
			if ($2 > limit)
				{print $0}}
		}' > ${TMP}

	if [ -s "${TMP}" ]; then
		rc=1
		echo ""
		echo 'ipfw log limit reached:'
		cat ${TMP}
	fi
	rm -f ${TMP};;
    *)	rc=0;;
esac

exit $rc