By default, Plesk supports a wide variety of encryption standards such as TLS 1.1, TLS 1.2 and TLS 1.3. By default, all Plesk shared hosting has TLS 1.2 and TLS 1.3 enforced to ensure your site and data remains secure when connecting via HTTPS.
However, if you have your own Virtual Private Server (VPS) you may need to manually adjust in order to enforce the latest standards. This may also show up in the Qualys SSL Labs test as a “B” or similar.
- Login to your Plesk VPS as the admin user.
- Go to Extensions -> My Extensions and select SSL It!:
- Click on the slider to enable synchronisation of TLS versions and ciphers from Mozilla:
- Select Intermediate, then Enable and Sync:
- This will update your webserver configuration automatically and enforce TLS 1.2 and 1.3 with higher grade ciphers.
- If you have previously run a Qualys test, re-run to confirm the changes. You may need to click the clear cache link to force it to re-run.