@jim1000:
Wait … I see the problem. The hotel initiated request goes to a.b.c.d.:5001 to start the slingbox and to send commands back and forth. pfsense need to know about it and direct it to the inside router while it's in use. This means I will need to get off the inside router asap and just use it for internet surfing only. Normal internet stuff ok. Outside - in requests will need configuration.
So both answers are right. Cascading routers work in only surfing. Anything complex means double nat is bad.
Back to the original question about atom processors?
Yes, you got it! If the incoming port is fixed, yes, you can map it all the way back. If it is dynamic, you're hosed.
Yeah, the atom should be fine. I refer back to the link I posted comparing your CPU versus the one I have. You should have no issues.