ECSA v10: EC-Council Certified Security Analyst v10

By ECCouncil · Question Mode

QuestionQ79

VerifiedNetwork Penetration Testing Methodology - Perimeter Devices

Jacob was recently assigned a project to test the perimeter security of a client. As part of the project, he wants to determine whether a particular firewall port is open or closed. He used the hping utility with the following syntax:

#hping -S -c 1 -p <port> <IP Address> -t <TTL>

Which response indicates that the particular port is allowed through the firewall?

Explanation

An ICMP Port Unreachable response shows that the probe was delivered to the destination host or network and was not silently blocked by the firewall. It indicates that the destination port has no available service, rather than that the firewall prevented the probe from reaching it.

Community Discussion

No comments yet. Be the first to start the discussion!