CREST Practitioner Security Analyst (CPSA) Practice

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Which protocol is indicated for port 79?

Finger
HTTP
Telnet
NetBIOS

The correct answer is: Finger

Port 79 is designated for the Finger protocol, which is used primarily for user identification and status checking on a network. It allows users to query a remote server to obtain information about logged-in users and their activities on the system. The Finger protocol is part of the suite of Internet protocols but is not commonly used in modern applications due to privacy concerns and the availability of more secure methods for obtaining user information. In contrast, HTTP (Hypertext Transfer Protocol) is typically associated with port 80, which is used for web traffic. Telnet, a protocol for text-based communication, generally operates over port 23. NetBIOS is linked to various ports, with 137-139 typically relating to network services related to Windows networking. Thus, the association of port 79 specifically with the Finger protocol is accurate and reflects its purpose within network communications.