Yes, disable your NetBIOS over TCP in your IP properties and this should do it, look at your WINS tab and you will see where NetBIOS over TCP/IP is checked off by default, Windows by default enables this for legacy support for NetBIOS application support. Do this and run your port scanner again, I am sure Port 445 will not show up anymore. Hope this helps -----Original Message----- From: Luiz Claudio Camargo [mailto:lcamargo@xxxxxxxxxxx] Sent: Friday, August 16, 2002 2:44 PM To: [ISAserver.org Discussion List] Subject: [isalist] port 445 msftds http://www.ISAserver.org Hi, all. Do you have idea how I can block the port 445 in Isa Server? I Tested my ports at the site grc.com and it shows as open and says this isn't secure... Thank's in advance... Luiz ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: gmaks@xxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')