User guide

Reference Guide 165
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
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 the 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.