How to secure my firewall

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A Comparison of iptables Automation Tools

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This documentation will offer a brief overview of the means of configuring iptables and will offer a brief review of some tools that have been developed to automate the configuration of iptables. This discussion will look at IP firewalling code in Li

Dynamic iptables firewalls

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In this documentation, you will learn how to make rapid, complex changes to your firewall rules dynamic firewall scripts. You can use these scripts to increase your network security and responsiveness, and to inspire your own creative designs.

Building a Bridging Firewall with Linux

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This documentation discusses how one can use the Linux kernels v2.2 and higher to setup Ethernet bridging and also explains the steps necessary to get a bridging firewall up and running. In a bridge, all packets received by one interface are passed t

Build a Floppy Firewall

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This documentation will teach you how to turn an unused PC into a packet-filtering firewall using a package called floppyfw. The firewall boots off a single floppy, runs completely in RAM, and uses ipchains for the filter rules. It also does IP masqu

Testing Your Firewall

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This document describes some procedures for testing your firewall implementation. It asks several questions that should help in determining if your firewall is working the way you expect.