VPN HOWTO

Matthew D. Wilson

Table of Contents

1. Introduction

1.1. Why I wrote this HOWTO

1.2. Acknowledgements and Thanks

1.3. Format of this document

1.4. Legal Information

1.5. Document History

1.6. Related Documents

2. Theory

2.1. What is a VPN?

2.2. But really, what IS a VPN?

2.3. So how does it work?

2.4. SSH and PPP

2.5. Alternative VPN Systems

3. Server

3.1. Security - keeping people out

3.2. User Access - letting people in

3.3. Restricting Users

3.4. Networking

4. Client

4.1. The Kernel

4.2. Bring up the link

4.3. Scripting

4.4. LRP - Linux Router Project

5. Implementation

5.1. Planning

5.2. Gather the tools

5.3. Server: Build the kernel

5.4. Server: Configure Networking

5.5. Server: Configure pppd

5.6. Server: Configure sshd

5.7. Server: Set up user accounts

5.8. Add vpn-users group

5.9. create the vpn-users home directory

5.10. The .ssh directory

5.11. Adding users

5.12. Server: Administration

5.13. Client: Build the kernel

5.14. Client: Configure Networking

5.15. Client: Configure pppd

5.16. Client: Configure ssh

5.17. Client: Bring up the connection

5.18. Client: Set the routes

5.19. Client: Scripting

6. Addenda

6.1. Pitfalls

6.2. Hardware and Software Requirements