Prerequisite KnowledgeFirst, let's look at the control bits and state machine of TCP, which form the basis for understanding the three-way handshake of TCP.TCP Packet Control BitsThe control bits in the TCP packet header are used to control the status of the TCP connection and can indicate various control information such as connection establishment, termination, reset, etc.There are six common control bits:SYN (Synchronize Sequence Numbers): Requests to establish a connection (part of the three-way handshake). It is set in the initial packet during connection establishment, indicating that th...