XP sp2

See where it says "enabled"?  That's what is controlling the firewall on the "domain" profile

 

 

You "could" flip it to "not configured"

 

 

Per David C - in the newsgroup -

Start/Administrative Tools/Group Policy 
Management  then under Forest: 
smallbusiness.local/Domains/smallbusiness.local/Group Policy Objects/Small 
Business Server Windows Firewall (or Small Business Server Internet 
Connection Firewall) then right click on it and select Edit   then Computer 
Configuration/Administrative Templates/Network/Network Connections/Windows 
Firewall


The Small Business Server Windows Firewall group policy is for POST XP SP2 
machines and Small Business Server Internet Connection Firewall is the group 
policy for Pre XP SP2.