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Network Fundamentals Simulator
TCP handshake & state machine
Click Next to walk through a full TCP connection — open, one data byte, then a graceful close. Sequence and acknowledgment numbers update in real time. Both endpoints\' states light up as they change.
Step: — idle —
TCP segment on the wire
Click Next to send the first SYN…
What this step does
TCP connection begins when the client sends a SYN with its initial sequence number. The server is passively LISTENing.
seq(client) = — · ack(client) = —
seq(server) = — · ack(server) = —
seq(server) = — · ack(server) = —
Practice — quick check
Score: 0 / 0
Question
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