A Network Administrator is trying to configure IPSec with a remote system. When a tunnel is initiated from the remote end, the security associations (SAs) come up without errors. However, encrypted traffic is never send successfully between the two endpoints. What is a possible cause?
A.
NAT could be running between the two IPSec endpoints
B.
A mismatched transform set between the two IPSec endpoints
C.
There is a NAT overload running between the two IPSec endpoints
D.
Mismatched IPSec proxy between the two IPSec endpoints