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What encryption method does IPsec use to ensure the confidentiality of data in transit?
Layer Two Tunneling Protocol (L2TP)
Encapsulating Security Payload (ESP)
Point-to-Point Tunneling Protocol (PPTP)
SSL
Encapsulating Security Payload (ESP) is the protocol IPsec uses to encrypt data for confidentiality. It can operate in tunnel mode, for gateway-to-gateway protection, or in transport mode, for end-to-end protection. To use IPsec in Windows, you have to create an IPsec policy and choose the authentication method and IP filters it will use. (Note: ESP is not an encryption method)
challenge this answer: One of the primary uses of IPSec is to create VPNs. IPSec, in conjunction with Layer Two Tunneling Protocol (L2TP) or Layer Two Forwarding (L2F), creates packets that are difficult to read if intercepted by a third party.
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