What is HSTS preload?
What is HSTS preload?
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.
How is HSTS preload implemented?
How to Add a Domain to the HSTS Preload List?
- Step 1: Check certificates and ciphers. Make sure that your sites have valid certificates and up-to-date ciphers.
- Step 2: Redirect all traffic to HTTPS.
- Step 3: Check all your domains and subdomains.
- Step 4: Set an HSTS response header.
- Step 5: Submit your domain.
How do you test HSTS preload?
To verify whether a domain is affected by HSTS preloading: Check Chrome’s HSTS Preload list form at https://hstspreload.org. Enter the domain and click Check status and eligibility.
What websites use HSTS?
HSTS is supported in Google Chrome, Firefox, Safari, Opera, Edge and IE (caniuse.com has a compatibility matrix).
Is HSTS mandatory?
max-age is the only mandatory directive and indicates how long the browser should remember that the site is HTTPS only. preload is also optional and indicates that the site meets requirements for HSTS preloading and is on the HSTS preload list or has applied for it – see below for more information on preloading.
How do I know if HSTS is enabled?
Verify HSTS Header 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.
How do I configure HSTS?
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).
How do you check preload?
To check whether preloading has any influence on performance, you should have a look at times and the order of the resources being loaded within the DevTools Network Monitor. Having said that, preloading actually does not work in Firefox yet (as of version 68).
How do you tell if HSTS is enabled?
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.
How do I open an Hsts site?
Open the full History window with the keyboard shortcut Ctrl + Shift + H (Cmd + Shift + H on Mac). You must use this window or the sidebar for the below options to be available. Find the site you want to delete the HSTS settings for – you can search for the site at the upper right if needed.
How do you fix Hsts problems?
Fortunately, the fix is simple, open up a new Chrome browser window or tab and navigate to the address chrome://net-internals/#hsts and type the URL you are trying to access in the field at the bottom, “Delete Domain Security Policies” and press the Delete button, viola! You should now be able to access that URL again.
What is maximum age for strict Transportation 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).
https://www.youtube.com/watch?v=ZRWmzb4lM48
