User guide

User Guide 191
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 that must be used for
interoperability (RSA, RC2, SHA-1) and the additional operational concerns such
as ANSI X.509 certificates and transport over the Internet.
SMS (Security Management System)
The former name of the GUI used to configure a Firebox. Now known as
WatchGuard Policy Manager.
SMTP (Simple Mail Transfer Protocol)
A protocol for sending electronic messages between servers.
social engineering attack
An attack in which an individual is persuaded or tricked into divulging privileged
information to an attacker.
SOCKS
A protocol for handling TCP traffic through a proxy server. It can be used with
virtually any TCP application, including Web browsers and FTP clients. It
provides a simple firewall because it checks incoming and outgoing packets and
hides the IP addresses of client applications.
SOHO
Small Office–Home Office. Also the name of the WatchGuard firewall devices
designed for this segment of the market.
spam
Unsolicited email sent to many recipients, much like an electronic version of
junk mail.
spoofing
Altering packets to falsely identify the originating computer to confuse or attack
another computer. The originating computer is usually misidentified as a trusted
computer within an organization.