On 4/20/06, Drew Tomlinson <[EMAIL PROTECTED]> wrote: > On 4/17/2006 2:29 PM Noah Silverman wrote: > > Hi, > > > > I have a system with a 4.11 Kernel. Unless I'm doing something very > > wrong, there seems to be something odd with ipfw. > > > > Take the following rules: > I assume above this you have "ipfw add check-state" defined? This is > the rule that's required to get ipfw to check its dynamic rule set. > Without it, "keep-state" rules will never work.
No, this is not required. The dynamic rules are checked at first keep-state or limit, too. > > ipfw add 00280 allow tcp from any to any 22 out via bge0 setup keep-state > > ipfw add 00299 deny log all from any to any out via bge0 > > ipfw add 0430 allow log tcp from any to me 22 in via bge0 setup limit > > src-addr 2 > I think this line is your problem. "setup" matches the initial packet > with the syn flag set. However since you have not added "keep-state", > no rule gets added to the dynamic rule set for this connection. > Subsequent packets don't match because "syn" is not set. Thus they hit > rule 499 and are denied. Yes. 'setup' is from "semi-stateful" firewall functionality while 'keep-state' is from fully stateful one. You can't use both in one rule without strange consequences. Just delete 'setup' words in both rules - it'll probably be fine. _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"