(Subject from the voice over guy...)
I have implemented that change in the article above to our workstations knowing that I can roll it back easy, but I am a little more hesitant to do it to our servers. Unfortunately we have some tools that need to access the WMI on our servers as well, so until I get brave or someone else with some more experience answers this question, those tools are broken with the firewall on. I saw your post, and wanted to respond there, but it was a few days old, and I wanted to get a response. Apparently no one reads the forum either?