CingKrab

thanx again for your help, Xiven and DS3Circuit.

Ha, you are right. Well, we are upgrading anyway. This time we'll make sure the service is disabled when we deploy the new systems.

Thanx for the advice, DS3Circuit. To clarify, I was able to use net send with a student lab account. I am not familiar with IPSec, but the teachers share a lot of teaching material on a server using file and print sharing, so I am not sure if restricting the netbios ports would also disable file and print sharing. Oh, we are using win2k.

Hello Everybody! We disabled messenger service in our school so pranksters won't use them to disrupt computer classes. However, I found out a couple of machines yesterday which were able to use the net send command to message a teacher's pc. Those pc's messenger services were disabled (checked using mmc and net start), and nbtstat didn't show anything registered at [03]. So I'm naturally curious how this happend ;( . Any help is appreciated.