Which well-known tunneling technology provides network layer authentication and optional encryption to make data transfer over the Internet secure?

Which well-known tunneling technology provides network layer authentication and optional encryption to make data transfer over the Internet secure?

Which well-known tunneling technology provides network layer authentication and optional encryption to make data transfer over the Internet secure?

A.
Layer 2 tunneling

B.
GRE

C.
IPSec

D.
Peer-to-peer

E.
Layer 2 forwarding



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