MAC address filtering, also known as hardware or physical address filtering, is a security access control method whereby the 48–bit address assigned to each network card is used to determine access to the network. It works by allowing network administrators to selectively block access to devices by using their MAC addresses. Essentially, it allows an administrator to create a list of approved MAC addresses and any device not on this list will be denied access.

Attack is an offensive manoeuvre by threat of force or violence. It is intended to have a physical, psychological, or symbolic effect on an opponent. The term is typically used in the context of military operations or warfare, but it can also refer to any hostile action or behaviour that is initiated with the intent to harm or damage another entity.

An Ethernet plug is a type of physical connector used to connect an Ethernet cable to a device, such as a computer or router. Ethernet plugs use either a modular 8P8C (eight position, eight contact) or a Registered Jack–45 (RJ–45) configuration. The RJ–45 plug is the most commonly used type and can be identified by its 8 pin connectors. An Ethernet cable will have a male plug on each end, which inserts into the female RJ–45 port of a device.