If I install a new certificate why does the root certificate have to be installed as well with it (well that is what I saw on a demo) ? I thought the root certificate was needed more on the client side or other firewall connecting to the one I'm referring to. I may be misunderstanding something.
Also I will be requesting new certificates to replace ones that will expire soon. I can see 'renew' button/link. In what scenarios would this link/button work and what scenarios would I manually have to get a replacement certificate and upload it to the firewall ?
Are you referring to GlobalProtect certificate?
Palo has built in root certificates that it trusts (Device > Certificates > Default Trusted Certificate Authorities).
If your CA is not in the list you need to import it.
It is good practice to incorporate intermediate certificate and your GlobalProtect certificate together into single file before import.
Otherwise all will work but you get notification if you run ssllabs test that additional cert needed to be downloaded.
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