A system administrator identifies unusual network traffic from outside the local network. Which of the following is the BEST method for mitigating the threat?
B. Port blocking
Explanation:
Port blocking prevents unauthorized or suspicious traffic by restricting access to specific ports on a firewall or router. If unusual traffic is coming from outside the local network, it may be targeting specific open ports. Blocking those ports helps mitigate the threat by preventing further unauthorized access or communications.
Why the other answers are less suitable:
A. Malware scanning: Detects malware after it has entered the system, but doesn't prevent unusual traffic.
C. Packet capturing: Used to analyze traffic, not to block or mitigate it.
D. Content filtering: Controls web access but doesn’t address unusual network traffic from outside the network.
C should not be correct - as capture will not prevent anything
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