[link|http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ics/ics/exercising_the_firewall_cpp.asp?frame=true|http://msdn.microsof...pp.asp?frame=true]
[link|http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ics/ics/windows_firewall_reference.asp?frame=true|http://msdn.microsof...ce.asp?frame=true]
I'm assuming the above docs are pre SP2. they are doing alot of work on the XP firewall for SP2 and things could change.