In your browser, for the URL enter “whatsmyip” and you should see your actual IP. That IP along with the actual port number should be part of the URL you would use for access. It should look similar to:
http://xxx.xxx.x.xxx:xxx/axis-cgi/mjpg/video.cgi?camera=1
add: Forgot one thing…You need to port forward. In your router, port forward the port you select to the IP address of your webcam. The IP should match up with your internal net address’s…if you internal address’s are 192.168.1.1xx the on the router, set it to port forward requests from the external IP:Port to the IP of your webcam and include the port #.