When attempting to tunnel FTP traffic through a stateful firewall that might be performing NAT or PAT,
which type of VPN tunneling should you use to allow the VPN traffic through the stateful firewall?
Correct Answer: B
Explanation/Reference:
Explanation:
IP Security (IPSec) over Transmission Control Protocol (TCP) enables a VPN Client to operate in an
environment in which standard Encapsulating Security Protocol (ESP, Protocol 50) or Internet Key
Exchange (IKE, User Datagram Protocol (UDP) 500) cannot function, or can function only with modification
to existing firewall rules. IPSec over TCP encapsulates both the IKE and IPSec protocols within a TCP
packet, and it enables secure tunneling through both Network Address Translation (NAT) and Port
Address Translation (PAT) devices and firewalls