etc/periodic/security/550.ipfwlimit

   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: src/etc/periodic/security/550.ipfwlimit,v 1.6 2003/06/30 22:06:26 mtm Exp $
  28 # $DragonFly: src/etc/periodic/security/550.ipfwlimit,v 1.3 2004/11/15 08:11:59 joerg Exp $
  29 #
  30
  31 # Show ipfw rules which have reached the log limit
  32 #
  33
  34 # If there is a global system configuration file, suck it in.
  35 #
  36 if [ -r /etc/defaults/periodic.conf ]
  37 then
  38     . /etc/defaults/periodic.conf
  39     source_periodic_confs
  40 fi
  41
  42 rc=0
  43
  44 case "$daily_status_security_ipfwlimit_enable" in
  45     [Yy][Ee][Ss])
  46         TMP=`mktemp -t security`
  47         IPFW_LOG_LIMIT=`sysctl -n net.inet.ip.fw.verbose_limit 2> /dev/null`
  48         if [ $? -eq 0 ] && [ "${IPFW_LOG_LIMIT}" -ne 0 ]; then
  49             ipfw -a l | grep " log " | \
  50             grep '^[[:digit:]]\+[[:space:]]\+[[:digit:]]\+' | \
  51             awk -v limit="$IPFW_LOG_LIMIT" \
  52                 '{if ($2 > limit) {print $0}}' > ${TMP}
  53             if [ -s "${TMP}" ]; then
  54                 rc=1
  55                 echo ""
  56                 echo 'ipfw log limit reached:'
  57                 cat ${TMP}
  58             fi
  59         fi
  60         rm -f ${TMP};;
  61     *)  rc=0;;
  62 esac
  63
  64 exit $rc