The 3-way handshake is a process in network communication to establish a reliable connection. It involves three steps:
1. *SYN (Synchronize):* The client sends a SYN packet to the server, indicating its intention to establish a connection.
2. *SYN-ACK (Synchronize-Acknowledge):* The server responds with a SYN-ACK packet, acknowledging the client's request and indicating its readiness to establish the connection.
3. *ACK (Acknowledge):* The client sends an ACK packet back to the server, confirming the connection establishment.
This process ensures both parties are aware of the intention to communicate and establishes a reliable connection for data exchange.