User guide

CHAPTER 11: Glossary
166 WatchGuard Firebox System 6.0
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.
SSL
See Secure Sockets Layer.
stance
The policy of a firewall regarding the default handling of IP
packets. Stance dictates what the firewall will do with any given
packet in the absence of explicit instructions. The WatchGuard
default stance is to discard all packets that are not explicitly
allowed, often stated as “That which is not explicitly allowed is
denied.”
star topology
A networking setup used with 10BASE-T cabling and a hub in
which each node on the network is connected to the hub like
points of a star.
static NAT
Network address translation in which incoming packets destined
for a public address on an external network are remapped to an
address behind the firewall.
stream cypher
A class of symmetric key encryption where transformation can be
changed for each symbol of plain text being encrypted; useful for
equipment with little memory to buffer data.
subnet
A network segment connected by hubs or repeaters. For example,
one could take a class C network with 256 available addresses and