I'm having trouble connecting to my Slingbox outside my house. I'm using a Gargoyle router (Gargoyle Router Management Utility) which is a derivative of OpenWRT. UPnP is enabled on the router, but that doesn't seem to make a difference.
I've reading the documentation on point forwarding - pretty straightforward. I created a DHCP reservation based on the MAC address of my Slingbox - 192.168.1.238. When successfully connecting to the Slingbox from within my LAN, I can stream just fine - I see the port in use by the Slingbox is 5209. I setup a rule to forward all traffic inbound to port 5209 to 192.168.1.238:5209. Still no dice.
Here's what my interface looks like when configuring the port on my router's port forward page - https://dl.dropboxusercontent.com/u/1308556/Images/GargoylePort.png
Is 5209 the correct internal port to whitelist?
I know that Plex.tv, which is kind of similar in function, uses different internal/external ports - https://db.tt/KtqjceJC
What are the correct external/internal ports to use here?
I should also probably mention there are multiple Slingboxes on my network (which I can't connect to), but for the time being, I'm just trying to get this single Slingbox to work correctly.