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    Deploy Server Certificates to the GlobalProtect Components
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    Deploy Server Certificates to the GlobalProtect Components

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    Deploy Server Certificates to the GlobalProtect Components

    Best practices for deploying server certificates to the GlobalProtect components include importing certificates from a well-known CA, creating a root CA certificate for self-signed certificates, using SCEP for certificate requests, and assigning certificates to SSL/TLS service profiles.
    The GlobalProtect components must have valid certificates to establish connection using SSL/TLS. The connection fails if you have invalid or expired certificates.
    The following table shows the best practice steps for deploying SSL/TLS certificates to the GlobalProtect components:

    Import a Server Certificate From a Well-known, Third-party CA

    Use a server certificate from a well-known, third-party CA for the GlobalProtect portal. This practice ensures that the end users are able to establish an HTTPS connection without seeing warnings about untrusted certificates.
    The CN and, if applicable, the SAN fields of the certificate must match the FQDN or IP address of the interface where you plan to configure the portal or the device check-in interface on a third-party mobile endpoint management system. Wildcard matches are supported.
    Before you import a certificate, make sure the certificate and key files are accessible from your management system and that you have the passphrase to decrypt the private key.
    1. Select DeviceCertificate ManagementCertificatesDevice Certificates and Import a new certificate.
    2. Use the Local certificate type (default).
    3. Enter a Certificate Name.
    4. Enter the path and name to the Certificate File received from the CA, or Browse to find the file.
    5. Set the File Format to Encrypted Private Key and Certificate (PKCS12).
    6. Enter the path and name to the PKCS#12 file in the Key File field or Browse to find it.
    7. Enter and re-enter the Passphrase that was used to encrypt the private key.
    8. Click OK to import the certificate and key.

    Create Root CA Certificate for Issuing Self-signed Certificates for GlobalProtect Components

    Create the Root CA certificate on the portal and use it to issue server certificates for the gateways and, optionally, for clients.
    Before deploying self-signed certificates, you must create the root CA certificate that signs the certificates for the GlobalProtect components:
    1. Select DeviceCertificate ManagementCertificatesDevice Certificates and Generate a new certificate.
    2. Use the Local certificate type (default).
    3. Enter a Certificate Name, such as GlobalProtect_CA. The certificate name cannot contain spaces.
    4. Do not select a value in the Signed By field. Without a selection for Signed By, the certificate is self-signed.
    5. Enable the Certificate Authority option.
    6. Click OK to generate the certificate.

    Use Root CA on the Portal to Generate a Self-signed Server Certificate

    Generate server certificates for each gateway you plan to deploy and optionally for the management interface of the third-party mobile endpoint management system (if this interface is where the gateways retrieve HIP reports).
    In the gateway server certificates, the values in the CN and SAN fields must be identical. If the values differ, the GlobalProtect agent detects the mismatch and does not trust the certificate. Self-signed certificates contain a SAN field only if you add a Host Name attribute.
    Alternatively, you can use Simple Certificate Enrollment Protocol (SCEP) to request a server certificate from your enterprise CA.
    1. Select DeviceCertificate ManagementCertificatesDevice Certificates and Generate a new certificate.
    2. Use the Local certificate type (default).
    3. Enter a Certificate Name. This name cannot contain spaces.
    4. In the Common Name field, enter the FQDN (recommended) or IP address of the interface where you plan to configure the gateway.
    5. In the Signed By field, select the GlobalProtect_CA you created.
    6. In the Certificate Attributes area, Add and define the attributes that uniquely identify the gateway. Keep in mind that if you add a Host Name attribute (which populates the SAN field of the certificate), it must be the same as the value you defined for the Common Name.
    7. Configure cryptographic settings for the server certificate, including the encryption Algorithm, key length (Number of Bits), Digest algorithm, and Expiration (days).
    8. Click OK to generate the certificate.

    Use Simple Certificate Enrollment Protocol (SCEP) to Request a Server Certificate From Your Enterprise CA

    Configure separate SCEP profiles for each portal and gateway you plan to deploy. Then use the specific SCEP profile to generate the server certificate for each GlobalProtect component.
    In portal and gateway server certificates, the value of the CN field must include the FQDN (recommended) or IP address of the interface where you plan to configure the portal or gateway and must be identical to the SAN field.
    To comply with the U.S. Federal Information Processing Standard (FIPS), you must also enable mutual SSL authentication between the SCEP server and the GlobalProtect portal. (FIPS-CC operation is indicated on the firewall login page and in its status bar.)
    After you commit the configuration, the portal attempts to request a CA certificate using the settings in the SCEP profile. If successful, the firewall hosting the portal saves the CA certificate and displays it in the list of Device Certificates.
    1. Configure a SCEP Profile for each GlobalProtect portal or gateway:
      1. Enter a Name that identifies the SCEP profile and the component to which you deploy the server certificate. If this profile is for a firewall with multiple virtual systems capability, select a virtual system or Shared as the Location where the profile is available.
      2. (Optional) Configure a SCEP Challenge, which is a response mechanism between the PKI and portal for each certificate request. Use either a Fixed challenge password that you obtain from the SCEP server or a Dynamic password where the portal-client submits a username and OTP of your choice to the SCEP Server. For a Dynamic SCEP challenge, this can be the credentials of the PKI administrator.
      3. Configure the Server URL that the portal uses to reach the SCEP server in the PKI (for example, http://10.200.101.1/certsrv/mscep/).
      4. Enter a string (up to 255 characters in length) in the CA-IDENT Name field to identify the SCEP server.
      5. Enter the Subject name to use in the certificates generated by the SCEP server. The subject must include a common name (CN) key in the format CN=<value> where <value> is the FQDN or IP address of the portal or gateway.
      6. Select the Subject Alternative Name Type. To enter the email name in a certificate’s subject or Subject Alternative Name extension, select RFC 822 Name. You can also enter the DNS Name to use to evaluate certificates, or the Uniform Resource Identifier to identify the resource from which the client will obtain the certificate.
      7. Configure additional cryptographic settings, including the key length (Number of Bits), and Digest algorithm for the certificate signing request.
      8. Configure the permitted uses of the certificate, either for signing (Use as digital signature) or encryption (Use for key encipherment).
      9. To ensure that the portal is connecting to the correct SCEP server, enter the CA Certificate Fingerprint. Obtain this fingerprint from the SCEP server interface in the Thumbprint field.
      10. Enable mutual SSL authentication between the SCEP server and the GlobalProtect portal.
      11. Click OK and then Commit the configuration.
    2. Select DeviceCertificate ManagementCertificatesDevice Certificates and then click Generate.
    3. Enter a Certificate Name. This name cannot contain spaces.
    4. Select the SCEP Profile to use to automate the process of issuing a server certificate that is signed by the enterprise CA to a portal or gateway, and then click OK to generate the certificate. The GlobalProtect portal uses the settings in the SCEP profile to submit a CSR to your enterprise PKI.

    Assign Server Certificate You Imported or Generated to an SSL/TLS Service Profile

    1. Select DeviceCertificate ManagementSSL/TLS Service Profile and Add a new SSL/TLS service profile.
    2. Enter a Name to identify the profile, and select the server Certificate you imported or generated.
    3. Define the range of SSL/TLS versions (Min Version to Max Version) for communication between GlobalProtect components.
      The Max Version supported is TLSv1.2.
      To provide the strongest security, set the Min Version to TLSv1.2.
    4. Click OK to save the SSL/TLS service profile.
    5. Commit the changes.

    Deploy the Self-signed Server Certificates

    • Export the self-signed server certificates issued by the root CA on the portal and import them onto the gateways.
    • Be sure to issue a unique server certificate for each gateway.
    • If specifying self-signed certificates, you must distribute the Root CA certificate to the end clients in the portal client configurations.
    1. Export the certificate from the portal:
      1. Select DeviceCertificate ManagementCertificatesDevice Certificates.
      2. Select the gateway certificate you want to deploy, and then click Export Certificate.
      3. Set the File Format to Encrypted Private Key and Certificate (PKCS12).
      4. Enter and confirm a Passphrase to encrypt the private key.
      5. Click OK to download the PKCS12 file to a location of your choice.
    2. Import the certificate on the gateway:
      1. Select DeviceCertificate ManagementCertificatesDevice Certificates and Import the certificate.
      2. Enter a Certificate Name.
      3. Browse to find and select the Certificate File you downloaded in the previous step.
      4. Set the File Format to Encrypted Private Key and Certificate (PKCS12).
      5. Enter and confirm the Passphrase you used to encrypt the private key when you exported it from the portal.
      6. Click OK to import the certificate and key.
      7. Commit the changes for the gateway.

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