Question 1100
Original unofficial RHEL 10 RHCSA skill-check scenario: A server has two NICs in different trust zones and an engineer opens SSH on the internet-facing zone unnecessarily. Which ongoing practice best prevents a recurrence?
Explanation
Correct Answer
In this RHEL 10 system administration case: A server has two NICs in different trust zones and an engineer opens SSH on the internet-facing zone unnecessarily. Underlying reason: Zone placement determines where a firewalld service exception applies. The most direct, approved resolution is: Identify zone membership and restrict SSH to the approved management zone or source policy. Confirm it by checking: Management access works only through authorized interfaces. Sustain the fix by: Audit interface-to-zone assignments during network changes. This is the INTENDED response for the best ongoing operational safeguard. It is a knowledge-check explanation, not a verified hands-on Red Hat exam answer;
Incorrect Answers
Verify runtime and permanent zone listings together. That is not sufficient for the reported RHEL task, because zone placement determines where a firewalld service exception applies.
Include reboot checks in SELinux change verification. That is not sufficient for the reported RHEL task, because zone placement determines where a firewalld service exception applies.
Document temporary permissive sessions and their closure. That is not sufficient for the reported RHEL task, because zone placement determines where a firewalld service exception applies.