Which function is not typically performed by a firewall?

Which function is not typically performed by a firewall?

• A. Decrypting all encrypted traffic to inspect contents.
• B. Blocking unauthorized access based on rules.
• C. Monitoring traffic and applying access policies.
• D. Logging connection attempts.

Answer: (A)

Firewalls are built to enforce access control and monitor network traffic. Their main jobs are to block unauthorized access based on rules, observe traffic and apply policies, and log connection attempts for auditing. Decrypting all encrypted traffic to inspect its contents isn’t a standard firewall function because encryption protects data end-to-end, and breaking or intercepting it for every connection would raise serious privacy concerns and impose heavy performance costs. Some enterprise devices can perform TLS inspection in a controlled way—terminating the TLS session, inspecting the data, and then re-encrypting for the client—but this is selective, requires proper certificates and trust, and isn’t done for all traffic by default. So decrypting all encrypted traffic to inspect contents isn’t typically performed by a firewall.

Firewalls are built to enforce access control and monitor network traffic. Their main jobs are to block unauthorized access based on rules, observe traffic and apply policies, and log connection attempts for auditing. Decrypting all encrypted traffic to inspect its contents isn’t a standard firewall function because encryption protects data end-to-end, and breaking or intercepting it for every connection would raise serious privacy concerns and impose heavy performance costs. Some enterprise devices can perform TLS inspection in a controlled way—terminating the TLS session, inspecting the data, and then re-encrypting for the client—but this is selective, requires proper certificates and trust, and isn’t done for all traffic by default. So decrypting all encrypted traffic to inspect contents isn’t typically performed by a firewall.