The TCP handshake is a three-way process that occurs between a client and a server to establish a TCP connection. It involves a series of steps where the client and server exchange specific TCP packets. Here is a detailed explanation of the TCP handshake, including steps, packet formats, and flags:
Example: The client (192.168.1.10) initiates the handshake by sending a TCP packet to the server (10.0.0.1) with the SYN (Synchronize) flag set to 1.
Example: Upon receiving the SYN packet, the server (10.0.0.1) responds with a TCP packet of its own.
Example: Upon receiving the SYN-ACK packet, the client (192.168.1.10) sends a final TCP packet to the server (10.0.0.1).
After these three steps, the TCP handshake is complete, and a reliable connection is established between the client and the server. Both the client (192.168.1.10) and the server (10.0.0.1) have exchanged SYN and ACK packets, agreeing on the initial sequence numbers (ISNs) and acknowledging each other’s packets. They are now ready to exchange data over the established connection.