It seems like your browser didn't download the required fonts. Please revise your security settings and try again.
Barracuda SSL VPN

How can I upload an SSL certificate from Comodo/InstantSSL to my Barracuda SSL VPN?

  • Type: Knowledgebase
  • Date changed: 3 years ago

Solution #00004274

All Barracuda SSL VPNs, all firmware versions.


  1. From the appliance web interface, navigate to Basic > SSL Certificate and fill in the required fields for generating a Certificate Signing Request (CSR) under the Certificate Generation header.

  2. Once the CSR is generated, submit this to Comodo. Make sure you select Apache-ModSSL on the Comodo web site as the web server type.

  3. Comodo will send back a zip file containing three certificates that have a .crt file extension; these will be your trusted certificate, an intermediate CA root and a CA root. You will also need to download the private key from the same place you downloaded the CSR.

    The three certificates from Comodo will look like these examples:

    your_host_name.crt ? your trusted certificate
    AddTrustExternalCARoot.crt ? the CA root certificate
    UTNAddTrustServerCA.crt ? the intermediate CA root certificate

  4. Create a new .crt file and paste the contents of both AddTrustExternalCARoot.crt and UTNAddTrustServerCA.crt using a text editor and save the file.

  5. Upload your certificates to the SSL VPN:

    • In Trusted Certificate > Upload Signed Certificate, browse to the your_host_name.crt certificate.
    • In Upload Certificate Chain Bundle, browse to the newly created combined CARoot certificate.
    • Enter sslvpn for the Certificate Password.
    • In Upload Private Key, browse to the private key that was downloaded.
    • Click Upload Certificate and Key, after which you can change the certificate type in the SSL Certificate Configuration section to Trusted (Signed by a trusted CA).

  6. Once this has been done, click the Synchronize button at the bottom of the page to synchronize this certificate with the SSL VPN interface on port 443.
Link to This Page: