Watchguard Firebox X20E Reference Manual page 71

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.
PPTP (Point-to-Point Tunneling Protocol)
One of the two standards for dial-up connection of computers to the Internet,
with stable data negotiation, compression, and error correction.
principle of precedence
Rules that determine which permissions and prohibitions override which
others when creating a combination of security policies.
probe
A type of hacking attempt characterized by repetitious, sequential access
attempts. For example, one might try to probe a series of ports for one that is
more open and less secure.
provisioning
The process of setting the parameters of the Firebox or SOHO before it is sent
to a customer. With respect to the Firebox, the minimum Policy Manager
configuration is set with the most basic services on the box, Ping and
WatchGuard. It also sets the IP addresses on the Firebox.
proxy server
A server that stands in place of another server. In firewalling, a proxy server
poses as a specific service but has more rigid access and routing rules.
protocol
An agreed-upon format for transmitting data between two devices. The
protocol determines the following: the type of error checking to be used, data
compression method, if any; how the sending device will indicate that it has
finished sending a message, and how the receiving device will indicate that it
has received a message.
RADIUS server
RADIUS (Remote Authentication Dial-In User Service) is an open, cross-
platform system for authenticating network users.
related hosts
A method to place hosts on the Optional or External interface when using a
simple or drop-in network configuration. Examples include placing a router
on the External interface or an HTTP server on the Optional interface.
related networks
Networks on the same physical wire as the Firebox interfaces but with
network addresses that belong to an entirely different network.
Reference Guide 67