I have an active IP address on my network which is within the address pool range on my DHCP server, but I can't find this IP address nor the user computer on the address lease folder of the DHCP server. please how can I find out who is using this IP address and what device is using it. I get a reply from it each time I ping it and my firewall device (Cyberoam) shows that the IP is active and many activities are going on it.
kindly assist me
Thank you