I need to enable an existing firewall rule (or make a new one) on all the computers in a Active Directory domain. What is the best/easiest way to do this?
EDIT: The computers are running Windows Vista default firewall. Active Directory is run by Windows 2008 AD controllers.
This document should be everything you need.
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=0b937897-ce39-498e-bb37-751c00f197d9&displaylang=en
This is however a bit more information than you seem to be after.
Skip to page 16 to get started, or continue on from page 32.
Due to your comment on possibly scripting the solution you can use net sh to do this.
http://support.microsoft.com/kb/947709
Hope this helps you.