Watchguard Firebox X1000 Reference Manual page 156

CHAPTER 9: Glossary
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session key
The secret (symmetric) key used to encrypt each set of data on a
transaction basis. A different session key is used for each
communication session.
session stealing
An intrusion maneuver whereby a hacker sends a command to an
already existing connection in order to have that command
provide the information needed to stage a separate attack.
setup keys (IKE)
IKE keys responsible for creating a security association.
SHA-1 (Secure Hash Algorithm)
The 1994 revision to SHA, developed by NIST, (FIPS 180-1). When
used with DSS, it produces a 160-bit hash, similar to MD4.
shared secret
A passphrase or password that is the same on the host and the
client computer. It is used for authentication.
SHTTP
See HTTPS.
sign
To apply a signature.
signature
A digital code created with a private key.
single sign-on
A sign-on in which one logon provides access to all resources on
the network.
slash notation
A format for writing IP addresses in which the number of bits in
the IP number is specified at the end of the IP address. For
example: 192.168.44.0/24.
SLIP (Serial Line Internet Protocol)
A protocol for exchanging IP packets over a serial line.
S/MIME (Secure Multipurpose Mail Extension)
A proposed standard for encrypting and authenticating MIME
data. S/MIME defines a format for the MIME data, the algorithms
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