Reference Manual for the ProSafe VPN Firewall FVS318v3
Glossary 9
January 2005

S

Segment
A section of a LAN that is connected to the rest of the network using a switch, bridge, or repeater.
Subnet Mask
Combined with the IP address, the IP Subnet Mask allows a device to know which other addresses are local
to it, and which must be reached through a gateway or router.

T

TCP/IP
The main internetworking protocols used in the Internet. The Internet Protocol (IP) used in conjunction with
the Transfer Control Protocol (TCP) form TCP/IP.

U

Universal Plug and Play
UPnP. A networking architecture that provides compatib ility among networking technology. UPnP
compliant routers provide broadband users at home and small businesses with a seamless way to participate
in online games, videoconfer e ncing and other peer-to-peer services.
UTP
Unshielded twisted pair is the cable used by 10BASE- T and 100BASE-Tx Ethernet networks.

W

WAN
See “Wide Area Network”
Web
Also known as World-Wide Web (WWW) or W3. An Internet client-server system to distribute information,
based upon the hypertext transf er protocol (HTTP).
WEB Proxy Server