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How can HSTS be prevented?
To disable HSTS on your website:
- Log in to the Cloudflare dashboard and select your account.
- Select your website.
- Go to SSL/TLS > Edge Certificates.
- For HTTP Strict Transport Security (HSTS), click Enable HSTS.
- Set the Max Age Header to 0 (Disable).
Is it safe to disable HSTS?
Just update your DNS and carry on! If you are keeping SSL, there is no reason to disable HSTS. On the other hand, not having HSTS on an SSL capable site makes that site less secure because traffic that would have been prevented by HSTS from flowing via HTTP is able to traverse the Internet in the clear.
What is HSTS preloading?
HSTS preloading is a function built into the browser whereby a global list of hosts enforce the use of HTTPS ONLY on their site. This list is compiled by Chromium Project and is utilized by Chrome, Firefox and Safari. These sites do not depend on the issuing of the HSTS response headers to enforce the policy.
Why do we need HSTS?
HSTS headers are only valid over HTTPS connections, so using HSTS guarantees that no unencrypted HTTP traffic is sent. Combined with preloading, HSTS also improves page load times by eliminating server redirects from HTTP to HTTPS.
When does the HSTS Preload list become unnecessary?
In the long term, as the web transitions fully to HTTPS and browsers can start phasing out plain HTTP and defaulting to HTTPS, the HSTS preload list (and HSTS itself) may eventually become unnecessary. Until that time, the HSTS preload list is a simple, effective mechanism for locking down HTTPS for an entire domain.
Is there a HSTS Preload list for Chrome?
This is a list of sites that are hardcoded into Chrome as being HTTPS only. Most major browsers (Chrome, Firefox, Opera, Safari, IE 11 and Edge) also have HSTS preload lists based on the Chrome list. (See the HSTS compatibility matrix .)
Is there a way to preload a website?
To remedy this and to improve page load speeds, all major browsers (including Chrome, Firefox, Internet Explorer and Safari) contain hard-coded lists of known HTTPS sites. This is called preloading, and is based on the Chromium (Chrome) HSTS preload list.
How to set HTTP header for Strict Transport Security?
Generally, you want to set a custom HTTP header for Strict-Transport-Security with the value max-age=31536000; includeSubDomains; preload (or some variant). Here are some links to do that with other web servers: Chrome’s HSTS preload list, and their submission form.