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IEEE 802.1AE (also known as MACsec) is a network security standard that operates at the medium access control layer and defines connectionless data confidentiality and integrity for media access independent protocols. It is standardized by the IEEE 802.1 working group.[1]


Key management and the establishment of secure associations is outside the scope of 802.1AE, but is specified by 802.1X-2010.

The 802.1AE standard specifies the implementation of a MAC Security Entities (SecY) that can be thought of as part of the stations attached to the same LAN, providing secure MAC service to the client. The standard defines

Security tag inside each frame in addition to EtherType includes:

The IEEE 802.1AE (MACsec) standard specifies a set of protocols to meet the security requirements for protecting data traversing Ethernet LANs.

MACsec allows unauthorised LAN connections to be identified and excluded from communication within the network. In common with IPsec and TLS, MACsec defines a security infrastructure to provide data confidentiality, data integrity and data origin authentication.

By assuring that a frame comes from the station that claimed to send it, MACSec can mitigate attacks on Layer 2 protocols.

Publishing history:

See also


  1. ^ "802.1AE - Media Access Control (MAC) Security". IEEE 802.1 working group. 2015-09-25.
  2. ^ a b "IEEE Standards Status Report: 802.1AE". IEEE. Retrieved 2016-04-25.[permanent dead link]
  3. ^ "802.1AEbw - MAC Security Amendment: Extended Packet Numbering". IEEE 802.1 working group. 2014-07-18.
  4. ^ "IEEE Standard for Local and metropolitan area networks--Media Access Control (MAC) Security - Amendment 3:Ethernet Data Encryption devices". IEEE STD 802.1AEcg-2017 (Amendment to IEEE STD 802.1AE-2006 as Amended by IEEE STD 802.1AEbn-2011 and IEEE STD 802.1AEbw-2013): 1–143. May 2017. doi:10.1109/ieeestd.2017.7932238. ISBN 978-1-5044-3725-7.
  5. ^ IEEE Standard for Local and metropolitan area networks-Media Access Control (MAC) Security. IEEE. December 2018. doi:10.1109/IEEESTD.2018.8585421. ISBN 978-1-5044-5215-1.