Devices with unknown OS in Fortigate

[Asim_Raza]

Hi,

I have a Fortigate 90D in our network. The problem is when i check in Device Inventory about the devices in our network, i see many devices with UNKNOWN OS tag. The windows OS devices have windows icon with them, same is the case with android and Mac OS devices. So what are these devices with UNKNOWN OS and how can i get to know about these devices in my network?  I want to know why Fortigate is showing Devices with UNKNOWN OS?

Thank You

[emnoc]

Because the packets and traffic can not id ALL devices. The device-id database is common version and OSes. Find the mac_address and  search the vendor type. The dev-id works on a combinaton of layer2/3 information and layer7  to ID the  sources , it's good but 100% good. YMMV  and it will NOT ID everything on our lan if that's your expectation.

Ken