HTTP Strict Transport Security

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Contents

Description

HTTP Strict Transport Security (HSTS) is an opt-in security enhancement that is specified by a web application through the use of a special response header. Once a supported browser receives this header that browser will prevent any communications from being sent over HTTP to the specified domain and will instead send all communications over HTTPS.


Examples

Example of the HTTP strict transport security header

 Strict-Transport-Security: max-age=60000

Browser Support

Browser
Lowest Version Supported
Internet Explorer
no support
Firefox
4
Opera
10.50
Safari
4.0
Chrome
4.0.211.0


Links

HSTS Spec

Wikipedia.org entry

MDN Docs for HSTS

OWASP TLS Protection Cheat Sheet