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Preventing NetBios requests dialling out

By isaac ·
I have a W2K server that has an ISDN modem attatched to it. Whenever a client sends a NetBios request on Port 136, 137 or 138 to the server it automatically passes that request to the ISDN modem and it initiates a cial-up to the Internet when this request had absolutely nothing to do with an external address. Is there a way that I can force WIN2K server to not forward these Netbios requests to the modem and only allow requests on legit ports such as 80 etc. I am also using ISA

Many THanks

Isaac de Abreu
Johannesburg - South Africa

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by Joseph Moore In reply to Preventing NetBios reques ...

Did you try disabling "NetBIOS over TCP/IP" in the settings of the connection to the ISDN?
For example, I take it the connection to the ISDN is listed in Network & Dialup Connections. If so, then go to the Properties of the connection, choose the TCP/IP settings, then the Advanced button, and then click the WINS tab.
On the bottom of the window, in the NetBIOS Setting section, choose Disable NetBIOS over TCP/IP.

See if that cuts it out.

hope this helps

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