312-38 Exam Dumps | Which among the following filter is used to detect a SYN/FIN attack?

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Question 5/146

Which among the following filter is used to detect a SYN/FIN attack?

A. tcp.flags==0x002

B. tcp.flags==0x004

C. tcp.flags==0x003

D. tcp.flags==0x001

Correct Answer: C

The filter tcp.flags==0x003 is used to detect SYN/FIN attacks. This filter is designed to identify packets where both the SYN and FIN flags are set, which is an unusual combination and indicative of a potential SYN/FIN attack. In a typical TCP communication, a SYN flag is used to initiate a connection, and a FIN flag is used to gracefully close a connection. Therefore, seeing both flags set in a single packet suggests a malformed or malicious packet, which is characteristic of a SYN/FIN attack.
References: The use of the filter tcp.flags==0x003 for detecting SYN/FIN attacks is discussed in various cybersecurity resources and aligns with the knowledge required for the Certified Network Defender (CND) certification. This specific filter is mentioned in discussions about network security and intrusion detection techniques1.

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