Cyber Security Interview Questions and Answers › Cyber Security
What is the TCP 3-way handshake?
Before TCP sends data, two computers agree to talk in 3 messages. SYN = start. ACK = acknowledge (I got it). Port scans, SYN floods and firewall states all depend on it.

Read card text
What this card says
Before TCP sends data, two computers agree to talk in 3 messages. SYN = start. ACK = acknowledge (I got it). Port scans, SYN floods and firewall states all depend on it.
Learn more in the lesson: 3.5 The TCP 3-Way Handshake