On 16 Dec 2003 at 15:53, Ken Schaefer wrote: Ok, one more question... what about services? can i disable netbios through disabling services? eg: windows messanger, netbios name helper, etc. why does microsoft put options in the network dialog, when the options do not work? > That is not a solution either. Please - turn on the Windows XP > Internet Connection Firewall if you have only this single machine. > > The messenger service also listens on a dynamic high order port. The > RPC port mapper service (port 135) can be queried to get the requisite > information, and a connection made directly to the Messenger service. > > Personally, you will be a lot safer if you turn on the ICF, because > it'll cut of all inbound access to ports that are open on your machine > (as well as stopping the messenger spam).