User guide

Reference Guide 155
out-of-band (OOB)
A management feature that enables the Management Station to
communicate with the Firebox using a telephone line and a
modem. OOB is very useful for remotely configuring a Firebox
when Ethernet access is unavailable.
packet
A unit of information containing specific protocols and codes that
allow precise transmittal from one node in a network to another.
packet filtering
A way of controlling access to a network by analyzing the
incoming and outgoing packets and letting them pass or halting
them based on the IP addresses of the source and destination.
Packet filtering is one technique, among many, for implementing
security firewalls.
passive mode FTP
See active mode FTP.
passphrase
An easy-to-remember phrase used for better security than a single
password; key crunching converts it into a random key.
password
A sequence of characters or a word that a user submits to a system
for purposes of authentication, validation, or verification.
password caching
The storage of a user’s username and password in a network
administrator database or encrypted file on a computer.
Password Authentication Protocol (PAP)
An authentication protocol that allows PPP peers to authenticate
one another. It does not prevent unauthorized access, but
identifies the remote end.
PCI (peripheral component interconnect)
A unique network interface card slot on the motherboard of a
computer.