NetBIOS NULL

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Q: Which of the below options could represent countermeasures against NetBIOS NULL session enumeration on Windows 2000?


a. Disable TCP port 139/445

b. Disable all SMB services on individual hosts by unbinding WINS Client TCP/IP from the server’s control panel/interface.

c. Edit registry key HKLMSYSTEMCurrentControlSetLSA and input the value RestrictAnonymous.

d. Deny any and all unauthorized inbound connections from connecting to TCP port 53.

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