Linux IP Masquerade mini HOWTO

Ambrose Au, ambrose@writeme.com; David Ranch, dranch@trinnet.net

1. Introduction

• 1.1 Introduction
• 1.2 Foreword, Feedback & Credits
• 1.3 Copyright & Disclaimer

2. Background Knowledge

• 2.1 What is IP Masquerade?
• 2.2 Current Status
• 2.3 Who Can Benefit From IP Masquerade?
• 2.4 Who Doesn't Need IP Masquerade?
• 2.5 How IP Masquerade Works?
• 2.6 Requirements for Using IP Masquerade on Linux 2.2.x
• 2.7 Requirements for Using IP Masquerade on Linux 2.0.x

3. Setting Up IP Masquerade

• 3.1 Compiling the Kernel for IP Masquerade Support
• 3.2 Assigning Private Network IP Address
• 3.3 Configuring the OTHER machines
• 3.4 Configuring IP Forwarding Policies
• 3.5 Testing IP Masquerade

4. Other IP Masquerade Issues and Software Support

• 4.1 Problems with IP Masquerade
• 4.2 Incoming services
• 4.3 Supported Client Software and Other Setup Note
• 4.4 IP Firewall Administration (ipfwadm)
• 4.5 IP Firewalling Chains (ipchains)
• 4.6 IP Masquerade and Demand-Dial-Up
• 4.7 IPautofw Packet Fowarder
• 4.8 CU-SeeMe and Linux IP-Masquerade Teeny How-To
• 4.9 Other Related Tools

5. Frequently Asked Questions

• 5.1 Does IP Masquerade work with dynamically assigned IP?
• 5.2 Can I use cable modem, DSL, satellite link, etc. to connect to the Internet and use IP Masquerade?
• 5.3 What applications are supported with IP Masquerade?
• 5.4 How can I get IP Masquerade running on Redhat, Debian, Slackware, etc.?
• 5.5 I've just upgraded to the 2.2.x kernels, why is IP Masquerade not working?
• 5.6 I've just upgraded to the kernels 2.0.30 or later, why is IP Masquerade not working?
• 5.7 I can't get IP Masquerade to work! What options do I have for Windows Platform?
• 5.8 I've checked all my configurations, I still can't get IP Masquerade to work. What should I do?
• 5.9 How do I join the IP Masquerade Mailing List?
• 5.10 I want to help on IP Masquerade development. What can I do?
• 5.11 Where can I find more information on IP Masquerade?
• 5.12 I want to translate this HOWTO to another language, what should I do?
• 5.13 This HOWTO seems out of date, are you still maintaining it? Can you include more information on ...? Are there any plans for making this better?
• 5.14 I got IP Masquerade working, it'' great! I want to thank you guys, what can I do?

6. Miscellaneous

• 6.1 Useful Resources
• 6.2 Linux IP Masquerade Resource
• 6.3 Thanks to
• 6.4 Reference