User Datagram Protocol (UDP)

22nd January 2020 | Cybrary User Datagram Protocol (UDP)


User Datagram Protocol (UDP) is an alternative communications protocol to Transmission Control Protocol (TCP), used primarily for starting low-latency and loss-tolerating connections between applications and the internet. UDP is also known as a “stateless” protocol, meaning it doesn’t acknowledge that the packets being sent have been received. Due to UDP working this way, it is typically used for streaming services. You may hear some break up in the audio or see some skips in the video, but UDP transmissions prevents the stream from stopping completely. 

VS.

Transmission Control Protocol (TCP) is a standard that defines how to establish and maintain a network conversation through which programs can exchange information or data. TCP works with the Internet Protocol (IP), which defines how computers send packets of information to each other. TCP is widely used for its reliability, ordered nature, and error correction. TCP is used for a variety of things, like email, file transfers, and any other operations where error-free data is more important than pure speed.

Related Terms: Transmission Control Protocol (TCP), Internet Control Message Protocol (ICMP)

Sources: TechTarget, TechTerms, PingPlotter

To learn more about Transport Protocols and UDP vs. TCP, watch this video:

Latest Blogs

Stay sharp with the latest security insights

Discover and share the latest cybersecurity trends, tips and best practices – alongside new threats to watch out for.

Your Employees Connected 47 Apps to Google Last Year. Can You Name One of Them?

Your Employees Connected 47 Apps to Google Last Year. Can You Name One of Them?

OAuth tokens don't expire when employees leave, passwords change, or apps go rogue. Your security program needs...

Read more
Attackers Don’t Need a Key. They Already Have Yours.

Attackers Don’t Need a Key. They Already Have Yours.

Most breaches don't start with a hacker in a hoodie cracking code at 3am. They start with your username and a...

Read more
Claude Mythos Opened Pandora’s Box. Project Glasswing Is Racing to Close It.

Claude Mythos Opened Pandora’s Box. Project Glasswing Is Racing to Close It.

Article Updates: As of May 6th 2026, every major U.S. AI lab, including Google DeepMind, Microsoft, xAI,...

Read more