Let me answer my own question. The Win7 Firewall offers two different firewalls, one for the home network, and one for the Internet connection network. Since the iC Pro lives on the home network, I don’t need this turned on, so I can turn this firewall off. And when I do, the iC Pro works as it should, awesome. The other firewall, as I read it, if you use a router and are connected to it via wi-fi, may not need to be on either, but they say it may help in some extreme cases. So I left it on.
(I might add that, connected via wi-fi to a router, I had been running without any firewall protection on my DAW for at least a year without issue. But today, upon installing the Bonjour software, my computer, well, suddenly it seemed almost ‘self-aware’ that I was not using a firewall. Ha, believe it or not.)
OK, hope this helps someone. The iC Pro app is a great help for me since my sound room is located below my control room. Really, this is a game changer for my process. Thank you Steinberg!!!
P.S. I just tried the app on my iPhone as well, and all is good there, too. What a great tool!!!