CERTIFIED-IN-CYBERSECURITY Question #232: Real Exam Question with Answer & Explanation

The correct answer is C: TCP port 21. FTP (File Transfer Protocol) typically operates on TCP port 21 (not UDP) for command control and uses a separate data connection on another port for data transfer. An IDS (Intrusion Detection Systems) would typically monitor TCP port 21 to identify connections to it as unencrypte

Network Security Concepts

Question

What ports are typically used to identify unencrypted FTP traffic by an IDS?

Options

ATCP port 23
BTCP port 21 and UDP port 21
CTCP port 21
DUDP port 69

Explanation

FTP (File Transfer Protocol) typically operates on TCP port 21 (not UDP) for command control and uses a separate data connection on another port for data transfer. An IDS (Intrusion Detection Systems) would typically monitor TCP port 21 to identify connections to it as unencrypted FTP traffic. Please note that TCP port 23 is typically used by Telnet and UDP port 69 is typically used by TFTP (Trivial File Transfer Protocol), which is different from FTP (see ISC2 Study Guide, Module 1, under Secure Ports) .

Topics

#FTP#TCP Ports#Network Protocols#IDS

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