G L O S S A R Y
B-8
Security Appliance User Guide
Version 3R2
B
Uniform Resource Locator (URL):
The standard used to obtain the
location of resources or global addresses found on the World Wide Web.
Unshielded Twisted Pair (UTP):
A standard cable used for telephone
lines, UTP is also used for Ethernet connections and is often referred to
as 10BaseT.
Virtual Local Area Network (VLAN):
A logical collection of nodes on a
network rather than a physical collection. It enables the nodes to be in
the same broadcast domain even though they might not be located on
the same physical switch. Users on the VLAN are identified using tags in
the frame header and are often referred to in the IEEE standard 802.1Q.
Virtual Private Networking (VPN):
An easy, cost-effective way for
business to use the public Internet to allow secure remote access into a
private network. VPNs commonly use encryption and authentication to
make this communication secure.
Wide Area Network (WAN:
A computer network that spans a large
geographical area. Typically a WAN consists of two or more local area
networks (LAN), usually connected using the public telephone system,
leased lines or satellite. The largest WAN today is the Internet.
Zone:
A segment on a network where certain security parameters are
applied. This could include a security zone, virtual private network (VPN)
zone, or demilitarized zone.
