Firewalling and Proxy Server HOWTO

Mark Grennan, markg@netplus.net

1. Introduction

• 1.1 Feedback
• 1.2 Disclaimer
• 1.3 Copyright
• 1.4 My Reasons for Writing This
• 1.5 TODO
• 1.6 Further Readings

2. Understanding Firewalls

• 2.1 Drawbacks with Firewalls
• 2.2 Types of Firewalls

3. Setting up the Firewall

• 3.1 Hardware requirements

4. Firewalling Software

• 4.1 Available packages
• 4.2 The TIS Firewall Toolkit vs SOCKS

5. Preparing the Linux system

• 5.1 Compiling the Kernel
• 5.2 Configuring two network cards
• 5.3 Configuring the Network Addresses
• 5.4 Testing your network
• 5.5 Securing the Firewall

6. IP filtering setup (IPFWADM)

7. Installing the TIS Proxy server

• 7.1 Getting the software
• 7.2 Compiling the TIS FWTK
• 7.3 Installing the TIS FWTK
• 7.4 Configuring the TIS FWTK

8. The SOCKS Proxy Server

• 8.1 Setting up the Proxy Server
• 8.2 Configuring the Proxy Server
• 8.3 Working With a Proxy Server
• 8.4 Drawbacks with Proxy Servers

9. Advanced Configurations

• 9.1 A large network with emphasis on security