How can I block remote access services

[ahrenstein]

I'm trying to block TeamViewer, LogMeIn, join.me, GoToMeeting, GoToMyPC, and any other remote access services.

Is there a general maintained list of these items I can use in pfBlocker or a similar package? I could only find one for LogMeIn but the site seems sketchy, and they want money for the list (which is fine if they blocked all services, but they only list LogMeIn)

Thanks so much!