Unlike cPanel and WHM that has separate ports for secure and unsecure connections, Vesta is using a single port – 8083 – which is not using a SSL certificate by default.
But you can configure an SSL certificate for Vesta.
How to set up an SSL certificate for Vesta login:
1. Connect to your server via SSH as root
2. Edit the file /usr/local/vesta/ssl/certificate.crt and paste in it the certificate. Save the file.
3. Edit the file /usr/local/vesta/ssl/certificate.key and paste in it the key for the certificate. Save the file.
4. Restart the Vesta service. On CentOS use service vesta restart command.
service vesta restart