Hi All, I'm having a torrid time trying to set up my firewall. This is the situation - I'm behing a router but I have my ISA Server internal IP address set as the default IP address so right now it is completely open to the world. I'm trying all that I can to close port but unable to do so - when I set the filters up to block a particular port and them run a port scanner the port is still open. Is there a way to block these ports without installing yet another Firewall software? I tried using the "Secure Your ISA Server Computer" Wizard but to no avail - no matter which option I use it comes back with this error message :- "The system security configuration application failed. For more information view the log file, Securwiz.log, located in the ISA Server installation folder." below is where the errors are located in the registry from the log file ================= ----Configure Registry Keys... Configure users\.default. Configure users\.default\software\microsoft\netdde. Configure machine\software. Configure machine\software\classes. Configure machine\software\classes\.hlp. Configure machine\software\classes\helpfile. Configure machine\software\microsoft\command processor. Configure machine\software\microsoft\cryptography. Configure machine\software\microsoft\driver signing. Configure machine\software\microsoft\enterprisecertificates. Configure machine\software\microsoft\netdde. Configure machine\software\microsoft\non-driver signing. Configure machine\software\microsoft\ole. Configure machine\software\microsoft\rpc. Configure machine\software\microsoft\secure. Configure machine\software\microsoft\systemcertificates. Configure machine\software\microsoft\windows\currentversion. Configure machine\software\microsoft\windows\currentversion\explorer\user shell folders. Configure machine\software\microsoft\windows\currentversion\runonce. Configure machine\software\microsoft\windows\currentversion\runonceex. Configure machine\software\microsoft\windows nt\currentversion. Configure machine\software\microsoft\windows nt\currentversion\accessibility. Configure machine\software\microsoft\windows nt\currentversion\aedebug. Configure machine\software\microsoft\windows nt\currentversion\asrcommands. Configure machine\software\microsoft\windows nt\currentversion\classes. Configure machine\software\microsoft\windows nt\currentversion\drivers32. Configure machine\software\microsoft\windows nt\currentversion\efs. Configure machine\software\microsoft\windows nt\currentversion\font drivers. Configure machine\software\microsoft\windows nt\currentversion\fontmapper. Configure machine\software\microsoft\windows nt\currentversion\image file execution options. Configure machine\software\microsoft\windows nt\currentversion\inifilemapping. Configure machine\software\microsoft\windows nt\currentversion\perflib. Configure machine\software\microsoft\windows nt\currentversion\ports. Configure machine\software\microsoft\windows nt\currentversion\profilelist. Configure machine\software\microsoft\windows nt\currentversion\secedit. Configure machine\software\microsoft\windows nt\currentversion\setup\recoveryconsole. Configure machine\software\microsoft\windows nt\currentversion\svchost. Configure machine\software\microsoft\windows nt\currentversion\time zones. Configure machine\software\microsoft\windows nt\currentversion\windows. Configure machine\software\microsoft\windows nt\currentversion\winlogon. Configure machine\software\policies. Configure machine\system. Error 234: More data is available. Error enumerating info for machine\system\currentcontrolset\control\MediaProperties\PrivateProperties. Error 234: More data is available. Error setting security on machine\system\currentcontrolset\control\MediaProperties\PrivateProperties. Error 234: More data is available. Error setting security on machine\system\currentcontrolset\control\MediaProperties. Registry keys configuration completed with error.