EC-Council Certified Security Analyst (ECSA v8) — Question 9

In which of the following IDS evasion techniques does IDS reject the packets that an end system accepts?

Answer options

• A. IPS evasion technique
• B. IDS evasion technique
• C. UDP evasion technique
• D. TTL evasion technique

Correct answer: D

Explanation

The correct answer is D, as the TTL evasion technique exploits the Time to Live (TTL) field in packets, causing the IDS to drop packets that the end system would normally allow. Options A, B, and C refer to different types of evasion techniques that do not specifically involve this behavior regarding packet acceptance by end systems.