Watchguard Firebox X1000 Reference Manual page 154

CHAPTER 9: Glossary
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salt
A random string that is concatenated with passwords (or random
numbers) before being operated on by a one-way function. This
concatenation effectively lengthens and obscures the password,
making the cipher text less susceptible to dictionary attacks.
scalable architecture
Software and/or hardware constructed so that, after configuring a
single machine, the same configuration can be propagated to a
group of connected machines.
screening router
A machine that performs packet filtering.
SCSI (Small Computer System Interface)
A processor-independent standard for system-level interfacing
between a computer and intelligent devices including hard disks,
floppy disks, CD-ROM, printers, and scanners.
secondary network
A network on the same physical wire as a Firebox interface that
has an address belonging to an entirely different network.
secret key
Either the private key in public key (asymmetric) algorithms or
the session key in symmetric algorithms.
secret sharing
See key splitting.
secure channel
A means of conveying information from one entity to another
such that an intruder does not have the ability to reorder, delete,
insert, or read.
Secure Sockets Layer (SSL)
A protocol for transmitting private documents over the Internet.
SSL works by using a private key to encrypt data transferred over
an SSL connection.
SecurID server
Each time an end user connects to the specialized-HTTP server
running on the Firebox on port 4100, a Java-enabled applet opens
and prompts for the username, password, and whether or not to
WatchGuard Firebox System