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How to install SMB SSL-VPN certificates in SonicWall UTM appliances.

03/26/2020 81 People found this article helpful 100,236 Views

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    Description

    This article describes how to export a signed third-party certificate from an SMB SSL-VPN appliance and import it into a SonicWall UTM appliance.

    Resolution

    Prerequisite:

    • A signed certificate installed in the SMB SSL-VPN appliance. Refer to this document for more information on installing a certificate in a SMB SSL-VPN device: SMB SSL-VPN: Creating and Installing Digital Certificates on SonicWall SSL VPN Appliances
    • OpenSSL installed. The commands shown in this article to convert the certificate are using OpenSSL.

    Procedure:

    • Login to the SMB SSL-VPN device
    • Navigate to the System > Certificates page.
    • Click on the down-arrow button under Download and save the zip file.

    Image

    • The zip file will contain both the signed certificate and its private key.
    • Extract the contents of zip file.
    • It will contain "server.crt" and "server.key"

    Image


    In OpenSSL enter the following commands to convert the certificate and the key to a PKCS12 (.p12 or .pfx) encoded certificate :

    If a password was defined when importing the signed certificate into the SMB SSL-VPN appliance, you may remove it using the following command:

    >>openssl rsa -in server.key -out server.key


    You will be prompted for a password. Enter the password and press the enter key.

    To convert the certificate and the private key to PKCS12 format (.pfx, .p12), enter the following command:

    >>openssl pkcs12 -export -out server.pfx -inkey server.key -in server.crt <press enter>


    When prompted for a password, enter a new password. This will be the management password for the certificate.

    A new file named "server.pfx" will be created.

    • Login to the SonicWall management GUI.
    • Navigate to the System > Certificates page.
    • Click on the Import button.
    • Select the radio-button under Import a local end-user certificate with private key from a PKCS#12 (.p12 or .pfx) encoded file.
    • Enter a name for the certificate.
    • Enter the password for the certificate, if any.
    • Click on the Browse button and select "server.pfx".
    • Click on the Import button. The certificate will be imported with Pending under Validated
    • Import the CA certificate to validate the certificate.

    Image Image
    Your certificate has been installed in the SonicWall. It could be used for SonicWall web management and UTM-SSL VPN. It is recommended that you import the root and intermediate certificates into your browser to avoid browser errors.

    Image Image

    Related Articles

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    Categories

    • Firewalls > TZ Series
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    • Firewalls > SonicWall SuperMassive 9000 Series
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