GIAC
GCIH · Question #514
GCIH Question #514: Real Exam Question with Answer & Explanation
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Question
Which of the following is an effective method of detecting a covert communication tunnel such as ptunnel?
Options
- ARejecting incoming UDP packets with source port < 1024
- BCapturing outgoing HTTP traffic at unusual times
- CRestricting ICMP port unreachables with a non-zero payload
- DDetecting ICMP packets with uncommon payloads
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