Watchguard Firebox X1000 Reference Manual page 149

Reference Guide
Policy Manager
One component in the WatchGuard Firebox System that provides
a user interface for modifying and uploading a Firebox
configuration file.
pop-up window
A window that suddenly appears (pops up) when an option is
selected with a mouse or a function key is pressed.
port
A channel for transferring electronic information between a
computer and a network, peripherals, or another computer.
port address translation
See dynamic NAT.
portal
A Web site that serves as a gateway to the World Wide Web and
typically offers a search engine or links to other pages.
port forwarding
In the WatchGuard Firebox System, an option in which the
Firebox redirects IP packets to a specific masqueraded host
behind the firewall based on the original destination port number.
Also called static NAT.
port space probe
An intrusion measure in which a hacker sequentially attacks port
numbers. These probes are usually attempts to map port space to
look for security holes which the sender might exploit.
port, TCP or UDP
A TCP or UDP service endpoint. Together with the hosts' IP
addresses, ports uniquely identify the two peers of a TCP
connection.
PPP (Point-to-Point Protocol)
A link-layer protocol used to exchange IP packets across a point-
to-point connection, usually a serial line.
PPPoE (Point-to-Point Protocol over Ethernet)
A specification for connecting the users on an Ethernet to the
Internet through a common broadband medium.
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