I'll note that all of the information in that article appears to come out of the
Troubleshooting Windows Home Server Connector Installation document from Microsoft (which contains more information than just the article contents). I would personally stick with Microsoft documentation where available; it's conceivable that additional ports will be opened up if additional functionality is added with a power pack or update, and that document will be updated as needed where a blog post or online article might not be.
And Bruce: you appear to be posting (i.e. copy/paste) RSS feed items. How about a simple link to
Computing.On.Demand in your .sig instead? Still, very helpful, and thanks!
I'm not on the WHS team, I just post a lot. :)