tcp three way handshake in detail

Sequence Diagram Showing The Tcp 3-Way Handshake Between A Client And Server With Correct Sequence And Acknowledgment Numbers
CCNA

TCP 3-Way Handshake: How It Works and Why It Matters

Every reliable TCP connection starts the same way: three packets, exchanged in a fixed sequence, before a single byte of real data moves. This is the TCP 3-way handshake, and it’s one of the most fundamental mechanics in networking. Understanding it isn’t just an exam requirement — it’s the foundation for reading packet captures, diagnosing...

Asad Ijaz 9 min read
Client And Server Connected By A Three-Way Handshake Sequence — Syn, Syn-Ack, And Ack — Transitioning Into A Steady Data Stream Of Sequenced Packets With A Sliding Window Bracket And A Retransmission Loop
CCNA

Transmission Control Protocol (TCP) Explained

Transmission Control Protocol, TCP, is a transport-layer protocol in the OSI model. It’s what actually creates a reliable connection between two remote computers, guaranteeing that data sent from one side arrives at the other, intact and in order. When the application layer has data to send, it hands that data down to the transport layer,...

Muhammad Khattak 8 min read
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