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  • October 8, 2003 at 2:03 pm #2280082

    Preventing NetBios requests dialling out

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    by isaac · about 19 years, 7 months ago

    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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    • October 8, 2003 at 7:19 pm #3378069

      Reply To: Preventing NetBios requests dialling out

      by joseph moore · about 19 years, 7 months ago

      In reply to Preventing NetBios requests dialling out

      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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