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What is HSTS



When it comes to website security, it is crucial to stay updated with the latest trends and technologies. One such technology is HSTS, which stands for HTTP Strict Transport Security. In this blog post, we will discuss what HSTS is, its benefits, and how to configure it on your domain.

What is a HSTS Domain?

HSTS is a web security policy mechanism that helps to protect websites against attacks such as cookie hijacking, protocol downgrade attacks, and man-in-the-middle attacks. It forces web browsers to communicate with the website over HTTPS only, even if the user types HTTP in the address bar. This ensures that the connection between the user’s browser and the website is encrypted and secure.

Configuration of HSTS on Your Domain

Configuring HSTS on your domain is a simple process. First, you need to obtain an SSL/TLS certificate and install it on your web server. Once you have done that, you can then configure HSTS by adding an HTTP header to your website’s response. The header should include the max-age directive, which specifies the time that the browser should remember to use HTTPS.

Here is an example of how to set the max-age directive to one year:

Strict-Transport-Security: max-age=31536000; includeSubDomains

The includeSubDomains directive is optional and is used to apply the same policy to all subdomains of your domain.

It is important to note that once you have enabled HSTS on your domain, it cannot be disabled immediately. The max-age directive specifies the number of seconds that the browser should remember to use HTTPS. If you set it to one year and decide to disable HSTS after six months, the browser will still remember to use HTTPS for the remaining six months.

Benefits of HSTS

By enabling HSTS on your domain, you can enjoy several benefits, including:

  • Increased website security
  • Protection against protocol downgrade attacks
  • Prevention of cookie hijacking
  • Protection against man-in-the-middle attacks
  • Improved search engine ranking


In conclusion, HSTS is a powerful web security policy mechanism that helps to protect websites against various attacks. Configuring HSTS on your domain is a straightforward process that can significantly improve your website’s security. By enabling HSTS, you can enjoy several benefits, including increased website security, protection against attacks, and improved search engine ranking.


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