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VPN connections provide protection against man in the middle attacks for higher network layers. How is protection at layer 2 achieved?
SSL
802.3
802.1 AE
IPSec
802.1 AE is the IEEE MAC Security Standard (MACSec) which defines a security infrastructure to provide data confidentiality, data integrity, and data origin authentication hop by hop protection at layer 2 (Data Link). Secure Socket Layer (SSL) provides security at layer 4 (Transport). Internet Protocol Security (IPSec) provides security at layer 3 (Network). 802.3 is the ethernet standard.
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