If network assets like firewalls or routers are running on Linux and support any of the commands described in
this KB article, you might be able scan them in the same way as Linux computers (please find instructions
here). However, in this case the asset type will also be set to Linux.
Otherwise if possible we recommend enabling SNMP on the device and scan it using SNMP. Under
Configuration\Scanning credentials enter the correct SNMP credentials and map them to the IP range of the device.
If SNMP is not supported, they will be scanned through other protocols for which authentication isn't supported (i.e. HTTP).