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TCP SYNs

Tags: networks

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Handshake Process

  1. SYN - Client sends a server a SYN packet with a random sequence number
  2. SYN-ACK - Server responds with a SYN-ACK packet and increments the sequence number, and sets its own sequence number
  3. Finally the client sends an ACK and acks the server sequence number
  • Both syns and acks are 32 bit ints