Instructions for SonicWALL SSL VPN devices
Uploading Intermediate Certificate and Server Certificate
To install your SSL Certificate you will first need to install the Intermediate Certificate then the Root Certificate.
To import the intermediate certificate go to System > Certificates > Import Certificate click the button Import CA Certificate
Next, find the file DigiCertCA.crt and click Upload.
Next you need to take the file your_domain_com.crt, that DigiCert sent to you rename it to server.crt and also the file server.key that was created when the certificate was requested, and combine these into a folder named server.zip.
An easy way to do create the zip file is to copy both files into a specific folder, then select them both, right-click and choose 'Send to' > 'Compressed Folder'.
Click the button Import Certificate
Then browse to and upload the file server.zip.
To make these changes take effect restart the device by going to System > Restart.
SSL Installation Guide for Sonic Wall SSL VPN Devices
Install SSL onto an Sonic Wall VPN