Thanks for all of the ideas. I have posted my issue in the sling community and 1 person has responded, but so far none of the ideas have worked. Also I think the people here are some of the smartest and I am always amazed at the knowledge base here.

Spent another 3 hrs today with ATT and Sling and here is the latest update.

Seahawk_6 - Thanks for the manual! Unfortunately, the Siemens 4100 that att uses is different than the standard model and it does not have any firewalls. That being said, I did put it in bridge mode (and verified it by not being able to access the admin menu) so it should no longer be an issue.

The ip is an external one that matches what att is giving me.

ScottC - "Are you connecting to the slingbox with the IP or the finderID"
I am not sure? I am using the connection wizard in the sling software

nmenaker - The att person agreed that it is rare that this causes an issue, but occasionally they conflict so it is better to switch the dsl to bridge.

The only remote service I use is VPN. I have never tried file sharing or other remote access.

Still confused on checking the open ports - the att person swears that all ports should be closed if you check them. Only way a port should be open is if the software is running to signal the traffic is okay. I tried to check port 80 which clearly is open on canyouseeme.com and it came through as blocked.

Leading contender is the Netgear WPM 124, but still shooting blanks. Any ideas appreciated.