I understand that you are having some issues in order to set up your Slingbox AV with the Frontier Speedstream 6520 router.
The Internet Viewing feature requires that you get the IP address provided by the router. Once you get this information, you'll need to create the rule and assign a specific port number (by default the Slingbox will use the port 5001).
The following third-party links will provide you with the steps to follow in order to set up your Slingbox AV for Internet Viewing.
Port Forwarding SlingBox on the Siemens Speedstream-6520
I've got the same problem. I've got an Actiontec M1424-WR wireless router from Verizon, my ISP. I"ve got everything hooked up correctly but when I try to connectI keep getting this prompt:
Do I have to MANUALLY set up the Port Forwarding settings? And lord in heaven, not being an IT guy either, how do I ever get around to doing that?
I'm on a iMac running 10.6.8
Frustated but hopeful....
Thanks in advance