What is a TCP 3 way handshake #tcp #cybersecurity

A TCP 3-Way Handshake is a process where two devices establish a reliable connection. The process involves three steps. The first step is the syn request, where the client device sends a syn packet to the server device to initiate the connection request. The server device responds with a syn-ack packet. Then, the client device sends the ack packet to acknowledge the server's response.
Client Server
| |
| SYN (seq=x) |
|--------------------------------->|
| |
| SYN-ACK (seq=y, ack=x+1) |
|<---------------------------------|
| |
| ACK (ack=y+1) |
|--------------------------------->|
| |