What is MACsec?

MACsec (Media Access Control Security) is an IEEE standard for network security that provides secure communication for Ethernet links. It operates at the data link layer (Layer 2) and provides encryption and authentication between devices on a network. It is commonly used to secure point-to-point or point-to-multipoint Ethernet links, protecting against eavesdropping, man-in-the-middle attacks, and data tampering within a local area network (LAN) or wide area network (WAN).