TCP Connection Setup – Three-Way Handshake Connection initiator (the client) – Chooses unique seqno x and sends req-conn(x) Connection respondent (the server) – Upon receiving req-conn(x) Chooses its own unique identifier, y Sends ack-conn(y,x+1) Upon receiving ack-conn(y,x+1), client responds – With ack-conn(x+1,y+1) SYN (SEQ=x) SEQ=x+1, ACK=y+1) SYN (SEQ=y, ACK=x+1) Con.
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