Part of the issue here was my office network has a proxy server for web connections.
When initially trying to figure things out, nothing worked (pings, etc.) When stumbling through the forum postings, trying to work with the Windows firewall, I apparently did something right. But...when I later tested, I just opened up a browser, and that still ran into the proxy issue. And I wrote the original post before figuring it out.
As it stands, things are working, but I am not sure what exactly fixed it.