Table 200. Transmission Control Protocol (tcp)
| Field | Field Name | Type |
|---|
| tcp.ack | Acknowledgement number | Unsigned 32-bit integer |
| tcp.checksum | Checksum | Unsigned 16-bit integer |
| tcp.checksum_bad | Bad Checksum | Boolean |
| tcp.dstport | Destination Port | Unsigned 16-bit integer |
| tcp.flags | Flags | Unsigned 8-bit integer |
| tcp.flags.ack | Acknowledgment | Boolean |
| tcp.flags.cwr | Congestion Window Reduced (CWR) | Boolean |
| tcp.flags.ecn | ECN-Echo | Boolean |
| tcp.flags.fin | Fin | Boolean |
| tcp.flags.push | Push | Boolean |
| tcp.flags.reset | Reset | Boolean |
| tcp.flags.syn | Syn | Boolean |
| tcp.flags.urg | Urgent | Boolean |
| tcp.hdr_len | Header Length | Unsigned 8-bit integer |
| tcp.nxtseq | Next sequence number | Unsigned 32-bit integer |
| tcp.port | Source or Destination Port | Unsigned 16-bit integer |
| tcp.seq | Sequence number | Unsigned 32-bit integer |
| tcp.srcport | Source Port | Unsigned 16-bit integer |
| tcp.urgent_pointer | Urgent pointer | Unsigned 16-bit integer |
| tcp.window_size | Window size | Unsigned 16-bit integer |