We have two instances of SQL 2005 running. One is 2005 Express (Timeforce) and the other is the main instance (Fusion database). We had everything working by disabling the firewall for several months but now we are getting attacked from at external IP on the SA account of both instances so we enabled the Windows Server 2003 firewall. The Timeforce SQL still works for my remote users but the Fusion SQL database won't let my remote users login to the SA account from the application they need to run. I don't see where there are any specific entries in the firewall for either instance of SQL. How can I check to see why the remote users can't login to the Fusion instance under the SA account. The app that accesses the Fusion DB does run fine on the server itself.