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Michael Hanke
September 2005


single- and multi-homed firewall script with DSL/ADSL support


arno-fwfilter - a filter script to make iptables firewall logs more readable for humans


arno-fwfilter [OPTIONS]


arno-fwfilter is a pipe filter script to make the firewall-log better readable. Some usage examples are:
Static firewall log filtering:
arno-fwfilter < logfile
Realtime firewall logging on tty10:
tail --follow <logfile> | arno-fwfilter >/dev/tty10 &


--help, -h Print the available options.
--no-resolve, -r
Disable resolving of IPs to names. --html-output, -o Use basic HTML to format the output.
--no-locations, -l
Disable to (try to) obtain the IP’s geographical location. By default, is visited to get this information.
--no-colors, -c
Disable the use of colors in the output.
--single-line, -s
Put all information about an event in a single line


arno-fwfilter was written by Arno van Amersfoort <>.
This manual page was written by Michael Hanke <>, for the Debian project (but may be used by others).
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