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Glossary of Networking Terms
SonicWALL ADConnector - A SonicWALL application for integrating SonicWALL
Content Security Manager filtering policies with Microsoft Active Directory groups and
users.
application filtering - A signature-based deep packet inspection mechanism for
controlling peer-to-peer (P2P), Instant Messaging (IM), and Multimedia applications
usage.
content filtering (CF) - A method of screening Web pages and email messages to
exclude specified users from access to them, using special filtering policies. The policies
use a variety of exclusion criteria including character string matching or source IP
address matching. Additionally, the policies contain priority levels, indicating sensitivity of
content.
Content Security Manager (CSM) - A SonicWALL Internet content and application filtering
solution that enhances security and employee productivity, optimizes network bandwidth
and mitigates legal liabilities.
default gateway - A device on an internetwork that forwards packets to another network.
DNS - Domain Name System, a hierarchical naming system that resolves a domain
name with its associated IP address. A DNS server looks up the name of a computer and
finds the corresponding IP address. This allows users to access hosts using friendly text-
based names instead of IP addresses. These names are called fully qualified domain
names (FQDN).
hardware failover - The capability of a mission-critical device, such as a SonicWALL
CSM, to automatically failover to a backup device in the event of a hardware failure on
the primary unit.
IP address - Internet Protocol Address, a thirty-two bit number that identifies a computer
or other resource on the Internet or on any TCP/IP network. The number is usually
expressed as four numbers from 0 to 255 separated by periods, for example,
172.16.31.254.
LAN - A Local Area Network is typically a group of computers located at a single
location, and is commonly based on the Ethernet architecture.
packet - A unit of information transmitted over the internet or within any TCP/IP network.
Packets have a header, which contains information about the source, destination, and
protocol to be used for the data, and a body, which contains the data being transmitted.
private IP address - An IP address for a resource in your network that is not known or
published outside the zone (for example LAN) where it is located.
public IP address - An IP address for a resource in your network that is published
outside your network to the WAN.