Because Palo Alto Networks enforces strict incoming Security policy rules for NetSec FedRAMP tenants, you must provide Palo Alto Networks customer services with a list of fully qualified domains (FQDNs) for the administrative users who will be accessing your environment. After you submit a support ticket with these FQDNs, customer services will create an allow list for them, which will let users log in from these FQDNs and access the environment.