Certified Ethical Hacker (CEH v13) — Question 244

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?

Answer options

• A. Remote procedure call (RPC)
• B. Telnet
• C. Server Message Block (SMB)
• D. Network File System (NFS)

Correct answer: C

Explanation

The correct answer is C, Server Message Block (SMB), as it specifically operates on TCP port 445. Remote procedure call (RPC) typically uses different ports, while Telnet generally operates on port 23, and Network File System (NFS) uses port 2049. Therefore, only SMB aligns with the specified port.