kb/data/developer.mozilla.org/en-US/docs/Glossary/DTLS-0.md

title	chunk	source	category	tags	date_saved	instance
DTLS (Datagram Transport Layer Security) - Glossary | MDN	1/3	https://developer.mozilla.org/en-US/docs/Glossary/DTLS	reference	web, html, css, javascript, documentation	2026-05-05T05:29:10.340582+00:00	kb-cron

• Skip to main content
• Skip to search

MDN HTML HTML: Markup language

HTML reference

• Elements
• Global attributes
• Attributes
• See all…

HTML guides

• Responsive images
• HTML cheatsheet
• Date & time formats
• See all…

Markup languages

• SVG
• MathML
• XML

CSS CSS: Styling language

CSS reference

• Properties
• Selectors
• At-rules
• Values
• See all…

CSS guides

• Box model
• Animations
• Flexbox
• Colors
• See all…

Layout cookbook

• Column layouts
• Centering an element
• Card component
• See all…

JavaScriptJS JavaScript: Scripting language

JS reference

• Standard built-in objects
• Expressions & operators
• Statements & declarations
• Functions
• See all…

JS guides

• Control flow & error handing
• Loops and iteration
• Working with objects
• Using classes
• See all…

Web APIs Web APIs: Programming interfaces

Web API reference

• File system API
• Fetch API
• Geolocation API
• HTML DOM API
• Push API
• Service worker API
• See all…

Web API guides

• Using the Web animation API
• Using the Fetch API
• Working with the History API
• Using the Web speech API
• Using web workers

All All web technology

Technologies

• Accessibility
• HTTP
• URI
• Web extensions
• WebAssembly
• WebDriver
• See all…

Topics

• Media
• Performance
• Privacy
• Security
• Progressive web apps

Learn Learn web development

Frontend developer course

• Getting started modules
• Core modules
• MDN Curriculum
• Check out the video course from Scrimba, our partner

Learn HTML

• Structuring content with HTML module

Learn CSS

• CSS styling basics module
• CSS layout module

Learn JavaScript

• Dynamic scripting with JavaScript module

Tools Discover our tools

• Playground

• HTTP Observatory

• Border-image generator

• Border-radius generator

• Box-shadow generator

• Color format converter

• Color mixer

• Shape generator

About Get to know MDN better

• About MDN

• Advertise with us

• Community

• MDN on GitHub

Blog

1. Glossary
2. DTLS (Datagram Transport Layer Security)

DTLS (Datagram Transport Layer Security)

Datagram Transport Layer Security (DTLS) is a protocol used to secure datagram-based communications. It's based on the stream-focused Transport Layer Security (TLS), providing a similar level of security. As a datagram protocol, DTLS doesn't guarantee the order of message delivery, or even that messages will be delivered at all. However, DTLS gains the benefits of datagram protocols, too; in particular, the lower overhead and reduced latency. These features are especially useful for one of the most common areas in which DTLS comes into play: WebRTC. All of the WebRTC related protocols are required to encrypt their communications using DTLS; this includes SCTP, SRTP, and STUN.

In this article

• See also

See also

• Datagram Transport Layer Security on Wikipedia
• Specifications:
  • RFC 9147: The Datagram Transport Layer Security (DTLS) Protocol Version 1.3
  • RFC 6347: Datagram Transport Layer Security Version 1.2
• Related specification
  • RFC 5763: Framework for Establishing a Secure Real-time Transport Protocol (SRTP) Security Context Using DTLS
  • RFC 5764: DTLS Extension to Establish Keys for the Secure Real-time Transport Protocol (SRTP)
  • RFC 6083: DTLS for Stream Control Transmission Protocol (SCTP)
  • RFC 8261: Datagram Transport Layer Security (DTLS) Encapsulation of SCTP Packets
  • RFC 7350: Datagram Transport Layer Security (DTLS) as Transport for Session Traversal Utilities for NAT (STUN)
  • RFC 7925: TLS / DTLS Profiles for the Internet of Things