> > add 10510 allow icmp from any to any out via oif() keep-state
> I don't think ICMP is stateful :)
> You need both in and out rules for ICMP because the logical responses to
> packets can't be reliably connected into a single communication.
Actually, I disagree. True, ICMP is not a stateful protocol; however,
keep-state directive works for ICMP as well:
ipfw add 99 allow icmp from me to 192.168.1.1 keep-state
on "ping 192.168.1.1" creates the following dynamic rule:
00099 7 588 (5s) STATE icmp 192.168.1.2 0 <-> 192.168.1.1 0
On a side note, the validity interval of this rule is controlled by
net.inet.ip.fw.dyn_short_lifetime sysctl variable and is in the above
case set to 5 seconds (default is 30).
email@example.com mailing list
To unsubscribe, send any mail to "[EMAIL PROTECTED]"