TCP Packet Header


## 20 bytes (160 bits, 5 Words)
Options can extends 60 bytes header size
![](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Fcc8f65a1-2cd9-4ce2-96c8-886b42f7bf56%2FUntitled.png?table=block&id=5cc01a63-ddc4-4527-aaf3-8d925dc92a43&cache=v2)
### TCP Packet Headers
|Title|
|:-:|
|[TCP Packet Header Port](https://texonom.com/tcp-packet-header-port-1f4dd3cb7d0a4139ad64972e7d5d7c97)|
|[TCP Packet Header ACK Number](https://texonom.com/tcp-packet-header-ack-number-98d4e593542846fd94a11d20da2baa5d)|
|[TCP Packet Header Sequence Number](https://texonom.com/tcp-packet-header-sequence-number-81c4b9b564154649aede9308374fb764)|
|[TCP Packet Header Data Offset](https://texonom.com/tcp-packet-header-data-offset-3d67cdad8f7f486f8df00cadc02b3c8b)|
|[TCP Packet Header Reversed](https://texonom.com/tcp-packet-header-reversed-ba5ba3ea3976464bb2b6f7bfd12400c3)|
|[TCP Packet Header Flag](https://texonom.com/tcp-packet-header-flag-fa0f8ee5eb3e443ba39c5dac02f2d592)|
|[TCP Packet Header Window Size](https://texonom.com/tcp-packet-header-window-size-1de6b1c4803146fa977f6318160c072a)|
|[TCP Packet Header Checksum](https://texonom.com/tcp-packet-header-checksum-1cdcf9b6c1f8410ba7193d141312d7cb)|
|[TCP Packet Header Urgent Pointer](https://texonom.com/tcp-packet-header-urgent-pointer-a82f766036804938a28ee292ee9e30f1)|
|[TCP Packet Header Option](https://texonom.com/tcp-packet-header-option-aa00228d5c774a5db89f444709f3d95a)|




> [https://evan-moon.github.io/2019/11/10/header-of-tcp/](https://evan-moon.github.io/2019/11/10/header-of-tcp/)






