PS3 NAT Type 2 without UPnP enabled

[tha_toadman]

I've decided to disable UPnP on both pfSense and my PS3. I previous had achieved a Type 2 on the PS3 using UPnP but now that I've shut it off, I'm connection testing again with a Type 3 meaning that ports are blocked which lead to "chat or the communication features of games may be restricted." My searching has mentioned dedicating an interface port and DMZ'ing the console there with restriction rules in place. I could do this but it would mean getting another NIC and I would like to avoid that if possible.

I had previously followed this post and most of those settings are still intact on my box.

Are there any other ways I might be able to achieve Type 2 connectivity without UPnP?