Three Way Handshake
In plain terms
The three-step process that establishes a TCP connection.
Going deeper
TCP's handshake (SYN, SYN-ACK, ACK) synchronizes both sides and confirms readiness before data flows. It sets up a reliable connection.
Under the hood
Establishes sequence numbers and confirms two-way reachability; SYN floods abuse this step.
Examples
TCP connection setup, SYN/SYN-ACK/ACK, reliable connections, SYN floods.
Think of it like...
Like a quick 'Hello?', 'Hi, can you hear me?', 'Yes!' before starting a phone conversation.