This initial communication phase helps establish a connection between the two devices. The SYN packet contains the client's address and a sequence number. The s...
This initial communication phase helps establish a connection between the two devices. The SYN packet contains the client's address and a sequence number. The server maintains a timer for the SYN timeout, which is typically a few seconds.
Step 2: Server Responds with a SYN Response Packet
If the client's timer expires, the server sends a SYN response packet. The SYN response contains the server's address and the same sequence number as the SYN packet. However, the sequence number is incremented by one to ensure uniqueness.
Step 3: Client Reconnects and Sends a SYN Packet
Upon receiving the SYN response, the client immediately reconnects and sends a SYN packet. This establishes a new connection attempt. The SYN packet contains the client's address, sequence number, and a new sequence number.
Explanation:
The three-way handshake ensures that both the client and server are ready for communication and that a connection can be established.
The sequence numbers prevent duplicate SYN packets and ensure that each connection is initiated properly.
If the SYN timeout expires without a SYN response, the client assumes that the connection is lost and initiates a new handshake.
The three-way handshake is a fundamental mechanism in computer networks, facilitating the establishment of secure and reliable communication channels