. First, we will create a Root CA Certificate. Create a Self-Signed Root CA Certificate. Is there anything I need to do? Obtain Certificates. Thanks in advance! This is working for our internal windows domain computers as the root CA and sub CA are pushed down to all of them via Group Policy. Don't select "Import private key" as it already resides on the firewall. Some websites use certificates signed by an intermediate CA. Click "OK" 9. 2. In this article, we will go through Alternative #1 - using a Self-Signed Forward Trust Certificate. Finally with OpenSSL I converted to a .p12 and gave it a password for the key. Device > Setup > WildFire. With the "Trusted Root CA" option selected, the Palo Alto Networks device will not allow you to delete the certificate, even if it is not used in the configuration. Download PDF. For the Palo Alto firewall to be able to generate certificates for visited websites on the fly, it will need to be able to act as a Certificate Authority, having the ability to issue these certificates.. Manually chained. We have Palo Alto's that perform SSL Decryption using a sub CA certificate issued by our internal Root CA. Step 1: Generate a Self-Signed Root CA Certificate in Palo Alto Firewall. This will open the Generate Certificate window. Any help would be greatly appreciated. Choose the Certificate Type Local. Steps On the WebGUI Go to Device > Certificate Management > Certificates Select the certificate to be deleted Click Delete at the bottom of the page, and then click Yes in the confirmation dialog Commit the configuration On the CLI: 1. This option is greyed out for Palo Alto Networks Firewall Enforcers since it is not supported. Obtain the certificate you want to install. Maybe a quick question. 3. Open up the run window by pressing "win-key"+"R" 3. type "mmc" and hit "enter" 4. The client gets no error during GP login but the keychain on the machine just shows the cert signed by an unknown CA. Hit "CTRL"+"M" 5. If an intermediate CA is not trusted on the Palo Alto Networks firewall, then it just drops the packets. IPv4 and IPv6 Support for Service Route Configuration. The CA certificate used to issue these other certificates is called a . This didn't work either. Decryption Settings: Certificate Revocation Checking. . Uncheck the Certificate Authority check box if you are using enterprise CA, or trusted third . Create a Forward Trust Certificate. Type out the certificate name (It must be exactly the same as the one that was exported) 3. Exporting the CSR and Importing the Signed Certificate are not applicable for self-signed certificates. On certificate Authority Backup Wizard, select Next to continue. Create a Self-Signed Root CA Certificate. Destination Service Route. Last Updated: Sun Oct 23 23:47:41 PDT 2022. . Device > Setup > Telemetry. You will be unable to get a CA cert from a public authority (like Symmatec or GoDaddy). Default Trusted Certificate Authorities (CAs) Download PDF. Populate it with the settings as shown in the screenshot below and click Generate to create the root . In the bottom of the Device Certificates tab, click on Generate. To avoid this situation it is important to add an intermediate certificate on the firewall. I have the root certificate on the Palo's already, I generated a CSR, sent it out for a certiciate to be created and then imported it into the Palo's. It says valid and nests below the root CA as you would expect but going back in to select 'forward trust', all the options are greyed out. Decryption Settings: Forward Proxy Server Certificate Settings. Leave as is. Then I imported it to the palo alto and also uploaded that key file OpenSSL created. Now that the basics are out of the way, it is time to start the configuration steps. When a certificate is marked as "Trusted root CA", the device will attempt to use it in conjunction with the SSL Decrypt configuration, even though SSL Decryption is not being used. Palo is complaining that "it cannot find a complete certificate chain for the certificate" even though the certificate is showing as valid. Generate a Certificate. User's don't actually go there to check anyway. The steps will fail if you try to delete a certificate that is currently being used. It shows as a valid cert but the two options Forward Trust Certificate and Forward Untrust Certificate are both greyed out still. 5. 7. check box for self-signed root CA certificate. After going through steps 1-3 in previous section, select Import at the bottom of the page. Palo Alto Networks Predefined Decryption Exclusions. 2. I am using an Enterprise CA-signed forward trust certificate and I imported the trusted root CA into the Palo (both of which are showing as valid). Certificate Management Procedure From the enterprise CA, export the root certificate and private key by following the below steps Open "Certificate Authority", highlight the CA, from "All Tasks" list, select "Back up CA" option 2. If you have a PaloAlto next-gen firewall and you want to perform SSL decryption on your outgoing traffic, the PaloAlto needs a CA cert so that it can issue its own certificates in order to MITM traffic, and of course your clients need to trust the PA's CA cert so . 04-14-2016 10:16 AM Your images didn't come through for some reason, but in general the reason for this is because the CSR wasn't signed with the CA option (ca=true). . Palo Alto Networks firewall can block websites if they have untrusted certificates. Procedure 1. In the left menu navigate to Certificate Management -> Certificates. Select "Computer account" and click "Next". Select "Local Computer" click "Finish" 8. They just don't want to see those pesky pop-ups about untrusted cert. From the left column select "Certificates" and click "add" 6. Navigate to Device >> Certificate Management and click on Generate. Device > Setup > Interfaces. Locate the signed certificate file and upload it. Login to the Palo Alto firewall and click on the Device tab. 2. PAN-OS. Hopefully a quick one. Later, we will use this certificate to sign the Server Certificate. Then the Mac's keychain will show the certificate as complete. If it's not a CA cert, it cannot be used for forward decryption. Device > Setup > Session. 6 5 4. Navigate to DEVICE > Certificate Management > Certificates > Device Certificates and click on the Generate button at the bottom. Certificate Management. PAN-OS Administrator's Guide. tech Issuing a CA cert to a PaloAlto firewall from Active Directory Certificate Services for SSL decryption Published 2021-06-05.