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Training Camp • Cybersecurity Glossary
MACsec is the IEEE 802.1AE standard for hop-by-hop Ethernet encryption and integrity at wire speed using AES-GCM on Layer 2 links.
MACsec Definition: MACsec is the IEEE 802.1AE standard for hop-by-hop Ethernet encryption and integrity at wire speed using AES-GCM on Layer 2 links.
MACsec is the IEEE 802.1AE Layer 2 security standard that provides hop-by-hop confidentiality, integrity, and data origin authentication for Ethernet frames. It encrypts and authenticates traffic at line rate, typically using AES-GCM, securing each point-to-point link between directly connected devices such as switches and hosts. Key management is commonly handled by the MACsec Key Agreement protocol defined in IEEE 802.1X.
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