If you are having an issue watching your Slingbox from an outside network but not the local network, it would sound like you need to set up "port forwarding". Here are some of Support Articles that explain "port forwarding":
- What's port forwarding/port mapping?
- A non-technical explanation of port forwarding or port mapping
- Remote viewing has stopped working and I am currently at home
If you are port forwarding a Slingbox other than a Slingbox 350 or 500, you will want to use either port number 5001, 5002, 443, or 8080. Port forwarding of a Slingbox 350 or 500 should not be necessary, however their port number would be 5201.
Hope this helps!
Sling Media Forum Moderation Team