Raymond Ops
Jun 12, 2026 · Fundamentals
Why TCP Handshake Needs Three Steps and Teardown Four – Wireshark Packet Analysis
This article provides a detailed, packet‑by‑packet walkthrough of TCP's three‑way handshake and four‑step connection termination, explains the TCP header fields, explores TIME_WAIT issues, compares BBR and Cubic congestion control, and offers practical Wireshark and tcpdump techniques for troubleshooting and interview preparation.
BBRCubicHandshake
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