What is preload in HSTS?

What is preload in HSTS?

What is HSTS Preloading. HSTS Preloading is a mechanism whereby a list of hosts that wish to enforce the use of SSL/TLS on their site is built into a browser. This list is compiled by Google and is utilised by Chrome, Firefox and Safari.

Which browser supports HSTS?

The following browsers supports HSTS policy (latest versions of browsers): Google Chrome. Mozilla Firefox. Microsoft Edge.

How do you check if HSTS is enabled for a website?

There are a couple easy ways to check if the HSTS is working on your WordPress site. You can launch Google Chrome Devtools, click into the “Network” tab and look at the headers tab. As you can see below on our Kinsta website the HSTS value: “strict-transport-security: max-age=31536000” is being applied.

Is the root domain eligible for the HSTS Preload list?

The reason we create the redirects like this is it allows us to server the HSTS header with the includeSubDomains directive on the root domain. The HSTS preload list only includes root domains. www.danielmorell.com is not eligible for the preload list since it is a subdomain.

Which is a subdomain included in the HSTS Policy?

This necessarily includes any subdomains in use solely on intranets. The HSTS policy includes all subdomains, with a long max-age, and a preload flag to indicate that the domain owner consents to preloading. The website redirects from HTTP to HTTPS, at least on the root domain.

What’s the best way to preload a HSTS list?

If your site is committed to HTTPS and you want to preload HSTS, we suggest the following steps: Examine all subdomains (and nested subdomains) of your site and make sure that they work properly over HTTPS. During each stage, check for broken pages and monitor your site’s metrics (e.g. traffic, revenue).

Which is an example of a valid HSTS header?

Here is an example of a valid HSTS header: Strict-Transport-Security: max-age=63072000; includeSubDomains; preload. You can check the status of your request by entering the domain name again in the form above, or consult the current Chrome preload list by visiting chrome://net-internals/#hsts in your browser.