Hi, I've been using ESET Smart security for many years. I'm now on ESS 18.104.22.168. I admit to not being very knowledgeable about the firewall and how to add special rules, etc.. I do generally use it in interactive mode, but my wife's machine I have on automatic to make it less "chatty". I just bought the SiliconDust HDHomeRun Prime network television tuner. It streams live TV from an ethernet LAN device to any computer with the SiliconDust software installed. I've successfully gotten it to work with ESS in interactive mode by enabling UPnP in the advanced firewall settings and then allowing all network access for the application when prompted. It fails with the automatic firewall. The SiliconDust setup program complains about UPnP not being enabled. I enabled it in ESS and double-check each time it complains. I get a black TV picture unless I either completely disable the firewall or put it into interactive mode and permanently allow the communication when prompted. Of course when I switch back to automatic mode it stops working. I looked at zones, but couldn't make heads or tails out of what I could do with it to help. What am I missing? Thanks in advance for any help offered.