Under certain conditions you may opt to acquire a firewall manually rather than using Zero Touch.
When acquiring manually, SSL cert verify is enabled by default. This is set as a security feature, but if proper SSL certification is not enabled on the firewall, the firewall does not get acquired.
To acquire a firewall manually
Click on the three dots under Action in the Firewall Inventory page.
Select Edit Settings.
Enter IP Address with Port, Username, and Password.
Click Save and Acquire.
NSM pulls the status and configuration of the firewall as part of the acquisition. It also configures the firewall to send out syslog heartbeats so its health can be monitored. The firewall shows in green if the acquisition is successful.