ECSA v10: EC-Council Certified Security Analyst v10

By ECCouncil · Question Mode

QuestionQ108

VerifiedNetwork Penetration Testing Methodology - Perimeter Devices

John is a penetration tester who wants to perform a port scan on the DNS Server (IP address: 192.168.0.124) deployed in the perimeter. During his initial research, he identified that the DNS server is configured with its default settings.

Because he is using the Nmap tool for port scanning, which of the following Nmap commands should John run to port scan the DNS Server?

Explanation

DNS conventionally uses port 53 for both UDP queries and TCP connections. A TCP SYN scan together with a UDP scan targeting port 53 checks the standard DNS service on both transport protocols.

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