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Internet firewall


The moment a computer is attached to the internet it is possible for any number of users on the net to make connections to it. Not everyone have a good intention. This simple internet firewall is meant for those wanting contact to the internet but have an uncomplicated set of services to offer to others. This probably covers more than 90% of all internet servers.

1. Principles

2. Input

3. Masquerading/NAT

4. Forwarding

5. Output

6. Soft interfaces and policy

7. Dynamic ip addresses

8. Static ip addresses

9. Daemon activation

10. The executable script

11. Command line options

12. On error

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