App can't schedule recordings while at home. - DirecTV

My Directv app on my Android phone can schedule recordings on my Genie when I'm away from home (using data or when I'm on another wireless network). However, when I'm at home on my own network it is never able to schedule a recording. I have to disconnect my phone from wireless and use my data to get it to record. I'm thinking it has to be some sort of firewall setting but why would it be more restrictive of traffic coming from inside the network than traffic coming from outside?

This question, "App can't schedule recordings while at home.," is about DirecTV channels, programming, equipment, and sports.