ECSA v10: EC-Council Certified Security Analyst v10

By ECCouncil · Question Mode

QuestionQ134

VerifiedPenetration Testing Essential Concepts

In a normal three-way handshake, system A sends an ACK packet to system B. However, system A does not send the ACK packet to system B. Client B is therefore waiting for an ACK packet from client A.

What is the status of client B?

Explanation

When the final ACK in a TCP three-way handshake is not received, the receiving endpoint remains in the SYN-RECEIVED state while awaiting completion of the handshake. This incomplete connection state is a half-open connection.

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