[pfSense-discussion] Set an OPT2 interface UDP rule with static-port option

[Adam Gibson]

I need quake4 UDP master server updates to try and keep the real source 
port when going through NAT.  The master servers use the src port that 
they receive when listing your server.  I noticed that pf does support 
that capability through the static-port option but I do not see a way of 
adding that to the pfsense rules.

I read somewhere in the pfsense discussions that this might be a 1.0 
Beta2 feature addition.  I am currently testing the 20060125 snapshot 
and do not see an obvious feature addition for that.  Anyone know if 
this will be added sometime in the future?

This is one feature that I believe pfsense can have that m0n0wall can't. 
 They use ipfilter which does not seem to have a NAT static-port 
equivalent.

Just for those interested...  Linux iptables will try to keep outgoing 
NATed UDP packets with the same source port unless that port is already 
in use on the firewall or by a previous state.  TCP src ports during NAT 
are changed on Linux iptables.