When a user visits your website, the above header will load first and the expiration time is 2 years (63072000 in seconds). 1# Optionally load the headers module: 2LoadModule headers_module modules/mod_headers.so 3<VirtualHost 67.89.123.45:443> 4Header always set Strict-Transport-Security “max-age=63072000; …

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Update the following line of code in config file’s server Block. 1add_header Strict-Transport-Security “max-age=63072000; includeSubdomains; “; Restart the NGINX server. More details in https://medium.com/@sslsecurity/how-to-enable-hsts-on-apache-nginx-and-lighttpd-8b0c64155911

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