In a Palo Alto Networks private cloud deployment, Palo Alto Networks
firewalls forward files to a WildFire appliance on your corporate
network that is being used to host a private cloud analysis location.
A WildFire private cloud can receive and analyze files from up to
100 Palo Alto Networks firewalls.
Because the WildFire private cloud is a local sandbox, benign,
grayware, and phishing samples that are analyzed never leave your
network. By default, the private cloud also does not send discovered
malware outside of your network; however, you can choose to automatically
forward malware to the WildFire public cloud for signature generation
and distribution. In this case, The WildFire public cloud re-analyzes
the sample, generates a signature to identify the sample, and distributes
the signature to all Palo Alto Networks firewalls with Threat Prevention
and WildFire licenses.