Appendix B: Glossary - Linksys BEFSR81 User Manual

What is DMZ Hosting? Demilitarized Zone (DMZ) allows one IP address (com-
puter) to be exposed to the Internet. Some applications require multiple TCP/IP
ports to be open. It is recommended that you set your computer with a static IP
if you want to use DMZ Hosting. To get the LAN IP address, see "Appendix F:
Finding the MAC Address and IP Address for Your Ethernet Adapter."
If DMZ Hosting is used, does the exposed user share the public IP with the Router?
No.
Does the Router pass PPTP packets or actively route PPTP sessions? The Router
allows PPTP packets to pass through.
Is the Router cross-platform compatible? Any platform that supports Ethernet and
TCP/IP is compatible with the Router.
How many ports can be simultaneously forwarded? Theoretically, the Router can
establish 520 sessions at the same time, but you can only forward 10 ranges of
ports.
Does the Router replace a modem? Is there a cable or DSL modem in the Router?
No, the Router must work in conjunction with a cable or DSL modem.
Which modems are compatible with the Router? The Router is compatible with vir-
tually any cable or DSL modem that supports Ethernet.
What are the advanced features of the Router? The Router's advanced features
include IP Filtering, Port Range Forwarding, Dynamic Routing, Static Routing,
DMZ Hosting, QoS, and MAC Address Cloning.
What is the maximum number of VPN sessions allowed by the Router?
The maximum number depends on many factors. At least one IPSec session will
work through the Router; however, simultaneous IPSec sessions may be possi-
ble, depending on the specifics of your VPNs.
How can I check whether I have static or DHCP IP Addresses? Consult your ISP to
obtain this information.
How do I get mIRC to work with the Router? Under the Port Range Forwarding tab,
set port forwarding to 113 for the PC on which you are using mIRC.
If your questions are not addressed here, refer to the Linksys website,
www.linksys.com.
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Instant Broadband Series
®
EtherFast Cable/DSL Router with QoS and 8-Port Switch
®

Appendix B: Glossary

10BaseT - An Ethernet standard that uses twisted wire pairs.
100BaseTX - IEEE physical layer specification for 100 Mbps over two pairs of
Category 5 UTP or STP wire.
Adapter - Printed circuit board that plugs into a PC to add to capabilities or con-
nectivity to a PC. In a networked environment, a network interface card (NIC) is
the typical adapter that allows the PC or server to connect to the intranet and/or
Internet.
Auto-negotiate - To automatically determine the correct settings. The term is
often used with communications and networking. For example, Ethernet 10/100
cards, hubs, and switches can determine the highest speed of the node they are
connected to and adjust their transmission rate accordingly.
Backbone – The part of a network that connects most of the systems and net-
works together and handles the most data.
Bandwidth - The transmission capacity of a given facility, in terms of how much
data the facility can transmit in a fixed amount of time; expressed in bits per sec-
ond (bps).
Bit – A binary digit. The value—0 or 1—used in the binary numbering system.
Also, the smallest form of data.
Boot – To cause the computer to start executing instructions. Personal computers
contain built-in instructions in a ROM chip that are automatically executed on
startup. These instructions search for the operating system, load it, and pass con-
trol to it.
Bottleneck – A traffic slowdown that results when too many network nodes try
to access a single node, often a server node, at once.
Bridge - A device that interconnects different networks together.
Broadband - A data-transmission scheme in which multiple signals share the
bandwidth of a medium. This allows the transmission of voice, data, and video
signals over a single medium. Cable television uses broadband techniques to
deliver dozens of channels over one cable.
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