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NBT-NS Poisoning Possible

Table of Contents

Option 1: Disable via DHCP

  1. Log on to the server providing DHCP to the environment and open the DHCP Management interface by running: dhcpmgmt.msc
  2. Navigate to the Server Options within your domain, right-click and select Configure Options...
    Configure Options
  3. Select the Advanced tab, select the Microsoft Windows 2000 Options, select 001 Microsoft Disable Netbios Option, change the value to 0x2, and select Ok.
    Change NetBIOS Option

Option 2: Disable on Specific Host

  1. Log on to the host and open the Network and Sharing Center by searching or right-clicking the Network icon in the bottom right and selecting Open Network and Sharing Center.
    Open Network and Sharing Center
  2. Click Change adapter settings.
    Change adapter settings
  3. Right-click on the interface and select Properties.
    Select Properties
  4. Select Internet Protocol Version 4 (TCP/IPv4) and click on Properties.
    IPv4 Properties
  5. On the General tab click the Advanced button and navigate to the WINS tab, then select Disable NetBIOS over TCP/IP and select Ok.
    Disable NetBIOS over TCP/IP