I just set up port forwarding for my 2 webcams. I won't post the links here because I don't want the cams public.
You internal network address to the cams should be the 192.168.1.108:800 number.
Your external internet address should be the 50.129.82.87:800 number. The 50.129.82.87 is the address to your home router and the :800 is the open port to access the camera.
As BigOkie stated, this is the web log-in to access to you cam.
"
http://user:pass@50.129.82.87:800/video.cgi".
If you replace the "user" with your user name and the "pass" with your password, it should work. Check that those do not show up in the address bar though or your visitors may be able to access the cameras settings. In the camera's settings there should be another log-in for visitors that you would post.