Deploy Server Certificates to the GlobalProtect Components
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.
- SelectandDeviceCertificate ManagementCertificatesDevice CertificatesImporta new certificate.
- Use theLocalcertificate type (default).
- Enter aCertificate Name.
- Enter the path and name to theCertificate Filereceived from the CA, orBrowseto find the file.
- Set theFile FormattoEncrypted Private Key and Certificate (PKCS12).
- Enter the path and name to the PKCS#12 file in theKey Filefield orBrowseto find it.
- Enter and re-enter thePassphrasethat was used to encrypt the private key.
- ClickOKto import the certificate and key.
- Create the root CA certificate for issuing self-signed certificates for the 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:
- SelectandDeviceCertificate ManagementCertificatesDevice CertificatesGeneratea new certificate.
- Use theLocalcertificate type (default).
- Enter aCertificate Name, such as GlobalProtect_CA. The certificate name cannot contain spaces.
- Do not select a value in theSigned Byfield. Without a selection forSigned By, the certificate is self-signed.
- Enable theCertificate Authorityoption.
- ClickOKto generate the certificate.
- Use the 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 aHost Nameattribute.
- SelectandDeviceCertificate ManagementCertificatesDevice CertificatesGeneratea new certificate.
- Use theLocalcertificate type (default).
- Enter aCertificate Name. This name cannot contain spaces.
- In theCommon Namefield, enter the FQDN (recommended) or IP address of the interface where you plan to configure the gateway.
- In theSigned Byfield, select the GlobalProtect_CA you created.
- In the Certificate Attributes area,Addand define the attributes that uniquely identify the gateway. Keep in mind that if you add aHost Nameattribute (which populates the SAN field of the certificate), it must be the same as the value you defined for theCommon Name.
- Configure cryptographic settings for the server certificate, including the encryptionAlgorithm, key length (Number of Bits),Digestalgorithm, andExpiration(days).
- ClickOKto 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 ofDevice Certificates.
- Configure a SCEP Profile for each GlobalProtect portal or gateway:
- Enter aNamethat 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 orSharedas theLocationwhere the profile is available.
- (Optional) Configure aSCEP Challenge, which is a response mechanism between the PKI and portal for each certificate request. Use either aFixedchallenge password that you obtain from the SCEP server or aDynamicpassword 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.
- Configure theServer URLthat the portal uses to reach the SCEP server in the PKI (for example,http://10.200.101.1/certsrv/mscep/).
- Enter a string (up to 255 characters in length) in theCA-IDENT Namefield to identify the SCEP server.
- Enter theSubjectname to use in the certificates generated by the SCEP server. The subject must include a common name (CN) key in the formatCN=<value>where<value>is the FQDN or IP address of the portal or gateway.
- Select theSubject Alternative Name Type. To enter the email name in a certificate’s subject or Subject Alternative Name extension, selectRFC 822 Name. You can also enter theDNS Nameto use to evaluate certificates, or theUniform Resource Identifierto identify the resource from which the client will obtain the certificate.
- Configure additional cryptographic settings, including the key length (Number of Bits), andDigestalgorithm for the certificate signing request.
- Configure the permitted uses of the certificate, either for signing (Use as digital signature) or encryption (Use for key encipherment).
- To ensure that the portal is connecting to the correct SCEP server, enter theCA Certificate Fingerprint. Obtain this fingerprint from the SCEP server interface in the Thumbprint field.
- Enable mutual SSL authentication between the SCEP server and the GlobalProtect portal.
- ClickOKand thenCommitthe configuration.
- Selectand then clickDeviceCertificate ManagementCertificatesDevice CertificatesGenerate.
- Enter aCertificate Name. This name cannot contain spaces.
- Select theSCEP Profileto use to automate the process of issuing a server certificate that is signed by the enterprise CA to a portal or gateway, and then clickOKto generate the certificate. The GlobalProtect portal uses the settings in the SCEP profile to submit a CSR to your enterprise PKI.
- Assign the server certificate you imported or generated to an SSL/TLS service profile.
- SelectandDeviceCertificate ManagementSSL/TLS Service ProfileAdda new SSL/TLS service profile.
- Enter aNameto identify the profile, and select the serverCertificateyou imported or generated.
- Define the range of SSL/TLS versions (Min VersiontoMax Version) for communication between GlobalProtect components.To provide the strongest security, set theMin VersiontoTLSv1.2.
- ClickOKto save the SSL/TLS service profile.
- Committhe 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.
Export the certificate from the portal:- Select.DeviceCertificate ManagementCertificatesDevice Certificates
- Select the gateway certificate you want to deploy, and then clickExport Certificate.
- Set theFile FormattoEncrypted Private Key and Certificate (PKCS12).
- Enter and confirm aPassphraseto encrypt the private key.
- ClickOKto download the PKCS12 file to a location of your choice.
Import the certificate on the gateway:- SelectandDeviceCertificate ManagementCertificatesDevice CertificatesImportthe certificate.
- Enter aCertificate Name.
- Browseto find and select theCertificate Fileyou downloaded in the previous step.
- Set theFile FormattoEncrypted Private Key and Certificate (PKCS12).
- Enter and confirm thePassphraseyou used to encrypt the private key when you exported it from the portal.
- ClickOKto import the certificate and key.
- Committhe changes for the gateway.
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