I've tried googling the answer for a few days now, have come up with very little apart from
http://retrohack.com/how-to-enable-xbox-live-behind-tmg-2010/
but can only publish ports on 1 ip address which isn't ideal as we have a few xbox's on our LAN
Essentially my 2008 R2 box is running forefront TMG as an Edge device.
i.e. 1x NIC connect to Internet directly
1x NIC Connected to private LAN (NAT'd)
I want to set TMG to allow UPnP devices to auto port map.. can this be done?(im aware of the security implications that this causes)
I essentially want be able to connect multiple Xbox's with full Xbox Live support.