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1. Introduction

This is the long-overdue Sentry Firewall CDROM HOWTO. This document is designed to help you get started using the Sentry Firewall CD and answer some of the questions you may have about the system and how it works. The most current version of this howto can be obtained at the following URL:

This document is designed to be somewhat brief, but complete. This is not, however, a detailed reference for the Sentry Firewall CD. Please see the "Further Reading" section below for links to more resources and references.

If you would like to add anything to this document, or if you have any questions or comments please feel free to email me,

1.1 Project Goals

The general goal of this project is mentioned several times within the documentation - that is simply, to build a bootable CDROM-based system that can be easily and dynamically configured. In the end, I wanted the configuration to rival that of any commercial router that utilizes configuration files. I also wanted the system to be simple, secure, and highly functional in a large number of operating environments - not just as a firewall. This, of course, has proven to be a difficult balance to maintain.

At the present time, the basic goals have been fulfilled. However, I believe there is still a great deal of development that can and needs to be done in order for the Sentry Firewall to be a truly diverse Linux distribution.

1.2 Further Reading

1.3 Copyrights and Disclaimer

The current copyright and disclaimer can be found on the website; It applies to the Sentry Firewall CD, and all the scripts and documentation associated with it.

1.4 Minimum Requirements

The following are the minimum requirements for successfully running the Sentry Firewall CD:

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