If you are not able to connect to the Slingbox but just from a computer at work, check this link
Also you can confirm with your IT department so they can take a look on the network and the computer settings and restrictions.
I fixed my ProHD!!! For the record this is Verizon FiOS w/ the Actiontec router in the picture.
A guy I work with helped me figure it out after his new ProHD (yeah he bought one knowing mine didn't work) stopped working after 1-2 days of working at our job. I've attached a screenshot.
We setup remote admin of our routers so we could get into them at work. After his stopped working he cleared everything out of his except for the next to last entry in the image. Then his unit worked again. However, when he connected to his ProHD again he saw that the unit seemed to write a second entry into the router firewall port forwarding area. The one boxed in red.
When both of these entries are present his box will NOT stream video to our workplace! While still logged into the router and Slingplayer (or Slingbox.com) if we deleted the second entry the streaming would work when we clicked retry. Amazing!!!
We're not sure why our units are trying to create/recreate entries already present on the router, but the fix is simple. Just disable the second entry (boxed in red). You do this oddly enough by unchecking it and then clicking the 'enable' button at the bottom. This 'enables' the current setup (which is the last one unchecked) and it will be disabled. Once you do this the ProHD won't try to recreate the last entry...it just uses the entry above it perfectly!!!
Does anyone at Sling know why the box would throw in this conflicting/defective entry with one already present?
Furthermore...any idea why my box was reachable on other networks, but not my work network? Seems like w/ the two entries it shoulda worked everywhere or nowhere.
FirewallPortForwarding.bmp 2.4 MB