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Top Forums UNIX for Dummies Questions & Answers how to configure a linux box as a firewall using iptables Post 10018 by Deuce on Tuesday 6th of November 2001 12:34:58 PM
Old 11-06-2001
Question how to configure a linux box as a firewall using iptables

I have already compiled the kernel and configured it to run as a firewall. My computer has 2 NICs and is on two seperate networks. I can ping both networks from my computer, but workstations on one network can not ping workstations on the other.

What Scripts or commands do I need to install ?
 

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ARNO-IPTABLES-FIREWALL(8)												 ARNO-IPTABLES-FIREWALL(8)

NAME
arno-iptables-firewall - Single- & multi-homed firewall script with DSL/ADSL support. SYNOPSIS
/etc/init.d/arno-iptables-firewall [start|stop|status|force-reload|restart] DESCRIPTION
arno-iptables-firewall is an iptables configuration script with support for both IPv4 & IPv6. While it is extremely easy to use one can nevertheless use it in quite complicated environments. All available options are explained in the extensively documented configuration file. The external interface of the system needs to be set up properly in the firewalls configuration file (EXT_IF). The default behavior of the firewall is to deny all incoming connections. For additional requirements not covered by the configuration file custom iptables rules can be placed in /etc/arno-iptables-firewall/cus- tom-rules. This file is automatically parsed by the service script. See the README file (eg. in /usr/(local/)share/doc/arno-iptables-firewall) for an example how to manage logging of firewall events through syslogd. The arno-fwfilter script can be used to make the firewall logs more readable for humans (see manpage). Several plugins for the firewall script are available online. Plugins can be downloaded from http://rocky.eld.leidenuniv.nl/ Please see the README file for more information. FILES
/etc/init.d/arno-iptables-firewall system service script /etc/arno-iptables-firewall/firewall.conf firewall configuration /etc/arno-iptables-firewall/conf.d/ firewall configuration directory /etc/arno-iptables-firewall/custom-rules custom iptables rules /etc/arno-iptables-firewall/blocked-hosts host blacklist /etc/arno-iptables-firewall/mac-addresses mac filter list Please note, that the last two files do exist in the initial configuration and their use is disabled in /etc/arno-iptables-firewall/fire- wall.conf SEE ALSO
iptables(8), arno-fwfilter(1), syslog.conf(5) The http://rocky.eld.leidenuniv.nl/ web site. AUTHOR
arno-iptables-firewall was written by Arno van Amersfoort <arnova@rocky.eld.leidenuniv.nl>. This manual page was written by Michael Hanke <michael.hanke@gmail.com>, for the Debian project (but may be used by others). Michael Hanke March 14, 2012 ARNO-IPTABLES-FIREWALL(8)
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