Source: https://www.geeksforgeeks.org/computer-networks/transport-layer-in-osi-model/

====== The Transport Layer ======

The Transport layer is the 4th layer from the bottom of the [[osi_model|OSI model]]. It controls network traffic between hosts and end systems.

==== Functions ====

  - End to End Communication
  - Flow Control
  - Multiplexing and Demultiplexing
  - Connection Establishment
  - Connection Termination
  - Reliable Data Delivery
  - Quality of Service

==== Protocols ====

  * [[udp|UDP]]
  * [[tcp|TCP]]

==== Devices ====

  * [[network-gateway|Gateways]]
  * [[network-firewall|Firewall]]