title: Sequence number TCP
body: <p>Every byte (of data send via TCP) has it's own sequence number. This sequence number features in the TCP header (the sequence number field).</p>
  
  <p>I read that this is separate from the sequence number used for the sliding window protocol. This makes me wonder:</p>
  
  <p><b>Q:</b>
  If the sequence number field in the TCP header does not contain the sequence number used for the sliding window protocol - where can the sliding window sequence number be found in the TCP header (or segment)?</p>