Question

what is SYN (synchronization) in networking

Answer 1

SYN (synchronization) is a TCP (Transmission Control Protocol) message used to initiate a connection between two devices on a network. When a device wants to establish a TCP connection with another device, it sends a SYN packet to the receiving device. The receiving device responds with a SYN-ACK packet, and the initiating device then sends an ACK packet to confirm the connection. This process is known as the TCP three-way handshake and is essential for establishing a reliable and stable connection between devices on a network.