User guide

CHAPTER 11: Glossary
156 WatchGuard Firebox System 6.0
PCMCIA (Personal Computer Memory Code International
Association) card
A standard compact physical interface used in personal
computers. The most common application of PCMCIA cards is for
modems and storage.
perfect forward secrecy (PFS)
A cryptosystem in which the cipher text yields no possible
information about the plain text, except possibly the length.
PEM
See Privacy Enhanced Mail.
peer-to-peer
A network computing system in which all computers are treated
as equals on the network.
peripherals
Equipment such as disk drives, CD-ROM drives, modems, and
printers that are connected to a computer.
permission
Authorization to perform an action.
PGP
See Pretty Good Privacy.
PGP/MIME
An IETF standard (RFC 2015) that provides privacy and
authentication using the Multipurpose Internet Mail Extensions
(MIME) security content types described in RFC1847, currently
deployed in PGP 5.0 and later versions.
Phase 1, Phase 2
Stages in the IKE negotiation. Phase 1 authenticates the two
parties and sets up a key management security association for
protecting the data. Phase 2 negotiates data management security
association, which uses the data management policy to set up
IPSec tunnels in the kernel for encapsulating and decapsulating
data packets.