During the enumeration phase, Lawrence performs banner grabbing to obtain information such as OS details and versions of services running. The service that he enumerated runs directly on TCP port 445.

The correct answer is C. Server Message Block (SMB). Server Message Block (SMB) is a network protocol that allows computers to share files, printers, and other resources. It is typically used on Windows-based networks. SMB runs on TCP port 445. In this scenario, Lawrence is performing banner grabbing to obtain information about the

Submitted by zhang_li· Mar 4, 2026Reconnaissance Techniques

Question

During the enumeration phase, Lawrence performs banner grabbing to obtain information such as OS details and versions of services running. The service that he enumerated runs directly on TCP port 445. Which of the following services is enumerated by Lawrence in this scenario?

Options

ARemote procedure call (RPC)
BTelnet
CServer Message Block (SMB)
DNetwork File System (NFS)

How the community answered

(34 responses)

A
3% (1)
B
6% (2)
C
91% (31)

Explanation

Server Message Block (SMB) is a network protocol that allows computers to share files, printers, and other resources. It is typically used on Windows-based networks. SMB runs on TCP port 445. In this scenario, Lawrence is performing banner grabbing to obtain information about the services running on the target machine. He is able to obtain the OS details and versions of services running on TCP port 445. This means that the service that he enumerated is SMB.

Topics

#Banner grabbing#Service enumeration#SMB#Port 445

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