How does EtherLock work?
The concept underlying EtherLock is that of a closed-loop alarm system, similar in function to door contact sensors in home alarm systems. EtherLock injects a stealth signal on the existing Ethernet wiring to create a continuous loop through the network interface card (NIC) in a computer or printer. When the Ethernet cable is disconnected from a NIC, or if the cable is cut at any point, this loop is broken and EtherLock immediately triggers event notification. Even an attempt to alter or jumper the wiring will interrupt the EtherLock signal and trigger notification.
