Firewall Piercing mini-HOWTO

François-René Rideau, rideau@ens.fr

1. Stuff

• 1.1 DISCLAIMER
• 1.2 Legal Blurp
• 1.3 Credits

2. Introduction

• 2.1 Foreword
• 2.2 Security problems
• 2.3 Other requirements
• 2.4 Downloading software

3. Understanding the problem

• 3.1 Giving names to things
• 3.2 The problem
• 3.3 Additional difficulty

4. Understanding the solution

• 4.1 Opening two connections
• 4.2 Synchronization

5. Detailed instructions

• 5.1 fwprc
• 5.2 .fwprcrc

6. Reverse piercing

• 6.1 Rationale
• 6.2 Getting the triggering mail

7. Final note

• 7.1 HOWTO maintenance
• 7.2 Extra copy of IMPORTANT DISCLAIMER --- BELIEVE IT!!!