O'Reilly logo

Wireshark Revealed: Essential Skills for IT Professionals by Charit Mishra, Yoram Orzach, James H Baxter

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Transport layer protocols

The transport layer protocols include TCP and UDP used to transport application protocols.

User Datagram Protocol

The User Datagram Protocol (UDP) is considered an unreliable transport. In this, there's no guarantee of packet delivery or ordering, but it has a lower overhead and is used by time-sensitive applications such as voice and video traffic.

The following screenshot shows the fields contained in an UDP header:

User Datagram Protocol

The UDP header is only 8-bytes long, consisting of:

  • Source and Destination port number: This is 2 bytes each.
  • Length: This is the length of the UDP header plus the payload. This is a 2-byte field.
  • Checksum: This ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required