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GRE & IPsec Tunnels

Table of Contents

GRE & IPsec Tunnels

Page 1 of 5

What is the primary function of GRE? Encrypt traffic Encapsulate packets Compress data Authenticate users

Page 2 of 5

Which protocol provides encryption for tunnel traffic? GRE IP IPsec MPLS

Page 3 of 5

Why is GRE often combined with IPsec? GRE provides encryption IPsec supports multicast GRE supports multicast and routing protocols IPsec improves speed

Page 4 of 5

Which IPsec component handles key exchange? ESP AH IKE GRE

Page 5 of 5

GRE tunnels operate at which OSI layer? Layer 2 Layer 3 Layer 4 Layer 7

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