Enable HTTP Strict Transport Security (HSTS)

Published on June 22nd, 2020

As part of a project that I was working on, I learnt about HTTP Strict Transport Security protocol which tells the browser about making future web requests over HTTPS only. So, even if you attempt to use http://, the browser will force you to use https:// URLs in the future.

You can enable it by writing this header in your .htaccess file in your public directory:

Header always set Strict-Transport-Security "max-age=31536000" env=HTTPS

Please note that once you enable this protocol, your web application is committed to using SSL i.e. you won't be able to use insecure HTTP for your web application.