Arduino Posted July 7, 2010 Report Posted July 7, 2010 (edited) Index:1. Introduction * 1.1 What? * 1.2 Why? * 1.3 How? * 1.4 Where? 2. Packet Filtering Basics * 2.1 What? * 2.2 Why? * 2.3 How? 3. I'm confused! Routing, masquerading, portforwarding, ipautofw... * 3.1 Rusty's Three-Line Guide To Masquerading * 3.2 Gratuitous Promotion: WatchGuard Rules * 3.3 Common Firewall-like Setups * 3.4 More Information on Masquerading 4. IP Firewalling Chains * 4.1 How Packets Traverse The Filters * 4.2 Useful Examples 5. Miscellaneous. * 5.1 How to Organize Your Firewall Rules * 5.2 What Not To Filter Out * 5.3 Filtering out Ping of Death * 5.4 Filtering out Teardrop and Bonk * 5.5 Filtering out Fragment Bombs * 5.6 Changing Firewall Rules * 5.7 How Do I Set Up IP Spoof Protection? * 5.8 Advanced Projects * 5.9 Future Enhancements 6. Common Problems * 6.1 ipchains -L Freezes! * 6.2 Inverse doesn't work! * 6.3 Masquerading/Forwarding Doesn't Work! * 6.4 -j REDIR doesn't work! * 6.5 Wildcard Interfaces Don't Work! * 6.6 TOS Doesn't Work! * 6.7 ipautofw and ipportfw Don't Work! * 6.8 xosview is Broken! * 6.9 Segmentation Fault With `-j REDIRECT'! * 6.10 I Can't Set Masquerading Timeouts! * 6.11 I Want to Firewall IPX! 7. A Serious Example. * 7.1 The Arrangement * 7.2 Goals * 7.3 Before Packet Filtering * 7.4 Packet Filtering for Through Packets * 7.5 Finally 8. Appendix: Differences between ipchains and ipfwadm. * 8.1 Quick-Reference table. * 8.2 Examples of translated ipfwadm commands 9. Appendix: Using the ipfwadm-wrapper script.10. Appendix: Thanks. * 10.1 Translations Sursa: http://www.linux-tutorial.info/modules.php?name=Howto&pagename=IPCHAINS-HOWTO Edited July 7, 2010 by Arduino 1 Quote
