final 19
In the _________ mode, the IPSec header is added between the IP header and the rest of the packet.
transport
IPSec operates at two different modes: _________ mode and _________mode.
transport; tunnel
In the ________ mode, the IPSec header is placed in front of the original IP header.
tunnel
The _______ protocol provides message authentication and integrity, but not privacy.
AH
The ________ protocol is designed to authenticate the source host and to ensure the integrity of the payload carried by the IP packet.
AH
The _______ protocol provides message authentication, integrity, and privacy.
ESP
VPN technology uses two simultaneous techniques to guarantee privacy for an organization: ________ and ___________.
IPSec; tunneling
IPSec defines two protocols: _________ and __________.
None of the choices are correct
_______ was invented by Phil Zimmermann to provide all four aspects of security in the sending of email.
None of the choices are correct
IPSec requires a logical connection between two hosts using a signaling protocol called ____________.
SA
The _______ was designed to provide security at the transport layer.
TLS
A proxy firewall filters at the __________ layer.
application
Tunneling is a technique in which the IP datagram is first _______ and then _______.
encrypted; encapsulated in another datagram
IP Security (IPSec) is a collection of protocols designed by the IETF (Internet Engineering Task Force) to provide security for a packet at the _________ level.
network
A packet-filter firewall filters at the ________ or ___________ layer.
network; transport