Let's say we have a network with DHCP running. All servers are configured to use DHCP. Each server get's allocated the same IP address from the DHCP server. All clients get diferent addresses based on the available addresses from the DHCP pool.

If I wanted to restrict someone from plugging in a device and setting their device up with a static IP Address is there a way to restrict access to the network? I would like to think its possible to give the user a message saying they are not authorised to do this. I could simply run over his fingers with my chair so he cant grasp the RJ45 connector to plug it in :-)

Any feedback is appreciated.

Thanks in advance.