Which statement about IKE and IKE NAT-T is true?

Which statement about IKE and IKE NAT-T is true?
A . IKE is used to encapsulate ESP traffic in some situations, and IKE NAT-T is used only when the local FortiGate is using NAT on the IPsec interface.
B . IKE is the standard implementation for IKEv1 and IKE NAT-T is an extension added in IKEv2.
C . They both use UDP as their transport protocol and the port number is configurable.
D . They each use their own IP protocol number.

View Answer

Answer: C

Explanation:

IKE without NAT-T runs over UDP port 500. IKE with NAT-T runs over UDP port 4500. It can be configurable – https://docs.fortinet.com/document/fortigate/7.0.0/new-features/33578/configurable-ike-port