NAME
welf2dlf - convert firewall logs in WebTrends Enhanced Log Format to
DLF
SYNOPSIS
welf2dlf file
DESCRIPTION
welf2dlf converts firewall logs in the WebTrends Enhanced Log Format
into the firewall DLF.
That format is defined at the following URL:
http://www.netiq.com/partners/technology/welf.asp
This converter also supports the SonicWall extensions.
A list of firewall products that supports that format can be found at
the following URL: http://www.netiq.com/products/fwr/compatible.asp
IMPLEMENTATION NOTES
Since the firewall DLF only supports packet filters, not all records
will be mapped to DLF.
Dropped packets messages (those with a field msg="XXX packet dropped")
will be mapped to denied DLF packet. (As well as all msg="TCP
connection dropped" records). Those packets will have a length of 0
(that’s a limitation of the format which don’t log that information on
dropped packet).
Messages with a proto= field set will be interpretted as "permitted"
"packet". That’s not exactly "right" because this message really
represent a "packets flow" and not a single packet.
Other records will be ignored.
You may use the welf_proxy service in the proxy superservice to extract
proxy level information from WELF logs.
EXAMPLES
To process a log as produced by WebTrends:
$ welf2dlf < welf.log
welf2dlf will be rarely used on its own, but is more likely called by
lr_log2report:
$ lr_log2report welf < /var/log/welf.log
THANKS
Mark D. Nagel, for giving feedback and supplying patches.
SEE ALSO
Lire::WELF(3) welf_proxy2dlf(1)
AUTHORS
Francis J. Lacoste <flacoste@logreport.org>
VERSION
$Id: welf2dlf.in,v 1.14 2006/07/23 13:16:35 vanbaal Exp $
COPYRIGHT
Copyright (C) 2001 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.