Watchguard Firebox X1000, Reference Manual

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Reference Guide 139
public key cryptography
Cryptography in which a public and private key pair is used, and
no security is needed in the channel itself.
probe
A type of hacking attempt characterized by repetitious, sequential
access attempts. For example, a hacker 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. Provisioning also sets
the IP addresses on the Firebox.
proxy ARP
The technique in which one host, usually a router, answers
Address Resolution Protocol (ARP) requests intended for another
machine. By “faking” its identity, the router accepts responsibility
for routing packets to the “real” destination.
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.
pseudo-random number
A number that results from applying randomizing algorithms to
input derived from the computing environment, such as mouse
coordinates. See also
random number .
Public Key Crypto Standards
A set of standards for public key cryptography developed in
cooperation with an informal consortium (Apple, DEC, Lotus,