When I see the official documentation of ipfw or the man pages it seems that it is sometimes incomplete. Specifically, there are a lot of options like,


etc., which can be found in many online guides but not in the docs. They're even discussed in the lists.

So I would like to understand if these are unofficial or undocumented options, and if they might be removed at some point in the future since they're not formally documented. More importantly, is there a single comprehensive documentation source for ipfw, short of grokking the source code?


So it seems that the options which are left out in the official docs are actually easily found in /etc/rc.firewall, which also happens to have the relevant explanations in the comments.

| improve this answer | |
  • Then for better results add a patch to your bug report that copies that information into the rc.firewall manual. – JdeBP Jun 28 '18 at 8:50
  • 1
    Haven't looked but man pages will often refer you to the comments in the conf files for more information. General practice on FreeBSD is to look in the conf files also. – Rob Jun 28 '18 at 11:37
  • I think there is no need to start a big fuss on variables in /etc/rc.firewall. Actually, some of oldschool guys usually wipe its contents and write rules by hand ignoring the template. – Mikhail Zakharov Aug 8 '18 at 14:26

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.