In this tutorial, we will learn how to use Let's Encrypt to secure our websites in Ubuntu. The first step is to install the Certbot package, which is the official Let's Encrypt client. To do this, we will use the sudo apt-get install certbot command. This command will install the Certbot package on our system. After the installation is complete, we can use the sudo certbot certonly --webroot -w /var/www/example.com -d example.com -d www.example.com command to generate a certificate for our website. Finally, we need to edit the virtual host configuration file for our website to enable the Let's Encrypt certificate. This can be done by adding the following lines to the configuration file:
SSLCertificateFile /etc/letsencrypt/live/example.com/fullchain.pem SSLCertificateKeyFile /etc/letsencrypt/live/example.com/privkey.pem
Once the configuration file is updated, we can restart the web server to enable the Let's Encrypt certificate. This will ensure that our website is secured with a valid SSL certificate.
In this step of the tutorial, we will use the certbot command to generate a certificate for our website. To do this, we will use the sudo apt-get install certbot command to install the certbot package. After the installation is complete, we will use the sudo certbot certonly --webroot -w /var/www/example.com -d example.com -d www.example.com command to generate the certificate. This command will generate a certificate for both example.com and www.example.com. After the certificate is generated, we will need to edit the virtual host configuration file for our website to enable HTTPS. For more information on how to do this, please refer to the DigitalOcean tutorial.
In order to secure your websites in Ubuntu, you need to edit the virtual host configuration file for your domain. To do this, open the configuration file in a text editor and add the following lines:
SSLCertificateFile /etc/letsencrypt/live/example.com/cert.pem
SSLCertificateKeyFile /etc/letsencrypt/live/example.com/privkey.pem
SSLCertificateChainFile /etc/letsencrypt/live/example.com/chain.pem
Save the file and restart the web server. You can now use Let's Encrypt to secure your websites in Ubuntu.