NAME

       IptablesDlfConverter - convert netfilter/iptables syslog logs to firewall DLF

DESCRIPTION

       IptablesDlfConverter converts Linux 2.4 iptables packet log into firewall DLF format.

LIMITATIONS

       The netfilter logging modules don't log the status of the packet (drop, accept, reject)
       like the ipchains logging code. You can specify a prefix that will be used in the log.
       This converter will mark the packet as 'denied' whenever that prefix matches (case
       insensitive) the following regex: 'denied|deny|drop|reject|unallowed', it will mark the
       packet as 'permitted' whenever that prefix matches (case insensitive) the following regex:
       'accept|permit', and all other packets will have '-' as the value of the 'action' field.

       So in order for this converter to detect 'denied' packets, you should use a prefix
       containing one of those substrings.

       For example:

        iptables -N lodrop
        iptables -A logdrop -j LOG --log-prefix "Packet-DENY: "
        iptables -A logdrop -j DROP

       or other similar prefixes: 'denied: ', 'Packet-REJECT: ', ...

       The prefix used will end up in the 'rule' field of the DLF record.

EXAMPLES

       IptablesDlfConvertor will be rarely used on its own, but is more likely called by
       lr_log2report:

        $ lr_log2report iptables < /var/log/iptables.log > report

SEE ALSO

       The Netfilter webpage at http://netfilter.samba.org/ .

AUTHORS

       Francis J. Lacoste <flacoste@logreport.org>

VERSION

       $Id: IptablesDlfConverter.pm,v 1.12 2006/07/23 13:16:35 vanbaal Exp $

COPYRIGHT

       Copyright (C) 2001, 2002, 2003, 2004 Stichting LogReport Foundation
       LogReport@LogReport.org

       This program is free software; you can redistribute it and/or modify it under the terms of
       the GNU General Public License as published by the Free Software Foundation; either
       version 2 of the License, or (at your option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
       without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
       See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program
       (see COPYING); if not, check with http://www.gnu.org/copyleft/gpl.html.