Here is a quick way to create a self signed certificate in Linux.
Run the following command. Fill out the required info.
openssl req -x509 -sha256 -nodes -days 3652 -newkey rsa:4096 -keyout /etc/pki/tls/private/localhost.key -out /etc/pki/tls/certs/localhost.crt
chmod 400 /etc/pki/tls/private/localhost.key
Now in your Apache or Nginx files, specify the path to the Key and the Certificate.
Note that if you’ll need to add the