Could we find the make and model of devices connected over a network (i.e on a LAN) and can what can find help us with program code?
Take a look at SpiceWorks. It has a network management app that should be able to find and identify every device on your network. It used Nmap to do much of the work.
Nmap is a good tool to query hosts and get details about them ~ it also tries to get the operating system in use.
Another option is Network Miner but it is more intended to detect and analyze traffic on your network.
While the MAC address can give you the manufacturer it isn't always fully accurate.
As for the model it's pretty much impossible without some sort access to the device ~ even then it's problematic as not all devices have this information stored and not all operating systems try to read that information from the hardware. Sometimes there is no way around other than looking at the device itself e.g. the tag with the serial number.
Thankyou for replying.Can you help us with code to implement this?
This is a really vague request as code!=code. Different code may have to be implemented differently and may not work on all systems.
On Windows you can try getting the system model using the Windows Management Instrumentation, example:
> wmic csproduct get name
PRIMERGY TX300 S4
another command giving you similar information is "wmic computersystem list brief"
This command should work on pretty much all Windows version used nowadays except XP Home which does not have the wmic command. However, as stated in my first post this requires the manufacturer to actually provide that information to the OS.
You can also query a remote host using wmic
The question is how you want execute that command on a remote host and how to fetch the output?
On a Mac you'd need remote access to the UNIX console e.g. via ssh. Then you can execute e.g. "system_profiler SPHardwareDataType" and strip the data to your needs.
On Linux systems you could use dmidecode
Thats about all I can give you on that topic – I'm not really a programmer anyway.
My personal suggestion:
Start tracking your inventory – keep track and note down information about every computer you hand out (should be a mandatory task). If you allow BYOD then you probably have a network usage agreement which you could modify to have people report to you or show you the actual device "for security purposes (possible malware infections)" and "to identify systems performing malicious activities on the network".
The easiest option doesn't always have to be technical…
Trogon MAC Scanner ?