Watchguard Firewall ports?

Is There a max number of ports I can open for RDP access in the watchguard. I have 4 that are working with no problems but can't seem to get the 2 new ones to work.

Reply 1 : Watchguard Firewall ports?

http://www.watchguard.com/support/index.asp is their site.

Sorry, I don't use their product but they should have your answer.
Bob