試験312-50v13 トピック1 問題486 スレッド
ECCouncil 312-50v13のリアル試験問題集
問題 #: 486
トピック #: 1
問題 #: 486
トピック #: 1
While conducting a covert penetration test on a UNIX-based infrastructure, the tester decides to bypass intrusion detection systems by sending specially crafted TCP packets with an unusual set of flags enabled.
These packets do not initiate or complete any TCP handshake. During the scan, the tester notices that when certain ports are probed, there is no response from the target, but for others, a TCP RST (reset) packet is received. The tester notes that this behavior consistently aligns with open and closed ports. Based on these observations, which scanning technique is most likely being used?
These packets do not initiate or complete any TCP handshake. During the scan, the tester notices that when certain ports are probed, there is no response from the target, but for others, a TCP RST (reset) packet is received. The tester notes that this behavior consistently aligns with open and closed ports. Based on these observations, which scanning technique is most likely being used?
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CEH describes FIN scans as stealthy scans that send packets with the FIN flag without initiating a TCP handshake. According to TCP RFC behavior, closed ports respond with RST packets while open ports ignore the probe, producing no response. This allows enumeration of port states while evading IDS systems that typically monitor SYN-based scans.
华束** 2026-06-14 10:30:26
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