Exam N10-008 Topic 4 Question 594 Discussion

Actual exam question for CompTIA's N10-008 exam
Question #: 594
Topic #: 4
A network technician needs to ensure outside users are unable to telnet into any of the servers at the datacenter. Which of the following ports should be blocked when checking firewall configuration?

Suggested Answer: B Vote an answer

Explanation
Port 23 should be blocked when checking firewall configuration to prevent outside users from telnetting into any of the servers at the datacenter. Port 23 is the default port for Telnet, which is an insecure protocol that allows remote access to servers and network devices. Telnet sends data in clear text, which can be easily intercepted and compromised by attackers. A more secure alternative is SSH, which uses port 22 and encrypts data. References:
https://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocol-rip/13788-3.html

by Mirabelle at May 20, 2025, 12:41 PM

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