Linksys NR041 Router Manual PDF (Setup & Configuration Guide)

Home

Manuals

Linksys

NR041

Page 36 / 50 Scroll up to view Page 31 - 35

Cable/DSL 4-Port Router

Network Everywhere

™

Series

How will I be notified of new Router firmware upgrades?

All Network

Everywhere firmware upgrades are posted on the Network Everywhere web-

site at

www.NetworkEverywhere.com

, where they can be downloaded for free.

The Router’s firmware can be upgraded with TFTP programs. If the Router’s

Internet connection is working well, there is no need to download a newer

firmware version, unless that version contains new features that you would

like to use.

Downloading a more current version of Router firmware will not

enhance the quality or speed of your Internet connection, and may disrupt

your current connection stability.

Will the Router function in a Macintosh environment?

Yes, but the Router’s setup

pages are accessible only through Internet Explorer 4.0 or Netscape

Navigator 4.0 or higher for Macintosh.

I am not able to get the web configuration screen for the Router.

What can I do?

You may have to remove the proxy settings on your Internet browser, e.g.,

Netscape Navigator or Internet Explorer.

Or remove the dial-up settings on

your browser.

Check with your browser documentation, and make sure that

your browser is set to connect directly and that any dial-up is disabled. Make

sure that your browser is set to connect directly and that any dial-up is dis-

abled. For Internet Explorer, click

Tools

Internet Options

, and then the

Connection

tab. Make sure that Internet Explorer is set to

Never dial a con-

nection

. For Netscape Navigator, click

Edit

Preferences

Advanced

, and

Proxy

. Make sure that Netscape Navigator is set to

Direct connection to the

Internet

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.

I set up an Unreal Tournament Server, but others on the LAN cannot join. What do

I need to do?

If you have a dedicated Unreal Tournament server running, you

need to create a static IP for each of the LAN computers and forward ports

7777, 7778, 7779, 7780, 7781, and 27900 to the IP address of the server. You

can also use a port forwarding range of 7777 ~ 27900. If you want to use the

UT Server Admin, forward another port (8080 usually works well but is used

for remote admin. You may have to disable this.), and then in the

[UWeb.WebServer] section of the server.ini file, set the ListenPort to 8080 (to

match the mapped port above) and ServerName to the IP assigned to the

Router from your ISP.

Can multiple gamers on the LAN get on one game server and play simultaneously

with just one public IP address?

It depends on which network game or what

kind of game server you are using.

For example, Unreal Tournament supports

multiple logins with one public IP Address.

How do I get

Half-Life: Team Fortress

to work with the Router?

The default client

port for Half-Life is 27005.

The computers on your LAN need to have

“+clientport 2700x” added to the HL shortcut command line; the x would be

6, 7, 8, and on up. This lets multiple computers connect to the same server.

One problem:

Version 1.0.1.6 won’t let multiple computers with the same CD

key connect at the same time, even if on the same LAN (not a problem with

version 1.0.1.3).

As far as hosting games, the HL server does not need to be

in the DMZ. Just forward port 27015 to the local IP address of the server com-

puter.

How can I block corrupted FTP downloads?

If you are experiencing corrupted files

when you download a file with your FTP client, try using another FTP program.

The web page hangs; downloads are corrupt, or nothing but junk characters are

being displayed on the screen. What do I need to do?

Force your Ethernet

adapter to 10Mbps or half duplex mode, and turn off the “Auto-negotiate”

feature of your Ethernet adapter as a temporary measure. (Please look at the

Network Control Panel in your Ethernet adapter’s Advanced Properties tab.)

Make sure that your proxy setting is disabled in the browser. Check our web-

site at

www.NetworkEverywhere.com

for more information.

If all else fails in the installation of the Router, what can I do?

Reset the Router

by holding down the reset button until the Diag LED fully turns on and off.

Reset your cable or DSL modem by powering the unit off and then on.

Obtain

and flash the latest firmware release that is readily available on the Network

Everywhere website,

www.NetworkEverywhere.com

Page 37 / 50

Cable/DSL 4-Port Router

Network Everywhere

™

Series

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

connectivity 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 second (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 comput-

ers 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

control 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.

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

virtually 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, 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

possible, 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 Network

Everywhere website,

www.NetworkEverywhere.com

Page 38 / 50

Cable/DSL 4-Port Router

Protocol (IP) addresses in an organization's network. Using the Internet’s set of

protocol (TCP/IP), each machine that can connect to the Internet needs a

unique IP address. When an organization sets up its computer users with a con-

nection to the Internet, an IP address must be assigned to each machine.

Without DHCP, the IP address must be entered manually at each computer and,

if computers move to another location in another part of the network, a new IP

address must be entered. DHCP lets a network administrator supervise and dis-

tribute IP addresses from a central point and automatically sends a new IP

address when a computer is plugged into a different place in the network.

DHCP uses the concept of a “lease” or amount of time that a given IP address

will be valid for a computer. The lease time can vary depending on how long a

user is likely to require the Internet connection at a particular location. It’s espe-

cially useful in education and other environments where users change fre-

quently. Using very short leases, DHCP can dynamically reconfigure networks

in which there are more computers than there are available IP addresses.

DHCP supports static addresses for computers containing Web servers that

need a permanent IP address.

DMZ

- (

ilitarized

one) allows one IP address (or computer) 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 address if

you want to use DMZ Hosting.

DNS

- The Domain Name System (DNS) is the way that Internet domain

names are located and translated into Internet Protocol (IP) addresses. A

domain name is a meaningful and easy-to-remember “handle” for an Internet

address.

Domain

- A subnetwork comprised of a group of clients and servers under the

control of one security database. Dividing LANs into domains improves per-

formance and security.

Download

- To receive a file transmitted over a network. In a communications

session, download means receive, and upload means transmit.

Driver

- A workstation or server software module that provides an interface

between a network interface card and the upper-layer protocol software running

in the computer; it is designed for a specific NIC, and is installed during the

initial installation of a network-compatible client or server operating system.

Network Everywhere

™

Series

Browser

- A browser is an application program that provides a way to look at

and interact with all the information on the World Wide Web or PC. The word

“browser” seems to have originated prior to the Web as a generic term for user

interfaces that let you browse text files online.

Cable Modem

- A device that connects a computer to the cable television net-

work, which in turn connects to the Internet. Once connected, cable modem

users have a continuous connection to the Internet. Cable modems feature

asymmetric transfer rates: around 36 Mbps downstream (from the Internet to

the computer), and from 200 Kbps to 2 Mbps upstream (from the computer to

the Internet).

CAT 5

- ANSI/EIA (American National Standards Institute/Electronic

Industries Association) Standard 568 is one of several standards that specify

“categories” (the singular is commonly referred to as “CAT”) of twisted pair

cabling systems (wires, junctions, and connectors) in terms of the data rates

that they can sustain. CAT 5 cable has a maximum throughput of 100 Mbps and

is usually utilized for 100BaseTX networks.

CPU

(

entral

rocessing

nit) - The computing part of the computer. Also

called the “processor,” it is made up of the control unit and ALU.

CSMA/CD

(

arrier

ense

ultiple

ccess/

ollision

etection) - The LAN

access method used in Ethernet. When a device wants to gain access to the net-

work, it checks to see if the network is quiet (senses the carrier). If it is not, it

waits a random amount of time before retrying. If the network is quiet and two

devices access the line at exactly the same time, their signals collide. When the

collision is detected, they both back off and each waits a random amount of

time before retrying.

Database

- A database is a collection of data that is organized so that its con-

tents can easily be accessed, managed, and updated.

Data Packet

- One frame in a packet-switched message. Most data communi-

cations is based on dividing the transmitted message into packets. For example,

an Ethernet packet can be from 64 to 1518 bytes in length.

Default Gateway

- The routing device used to forward all traffic that is not

addressed to a station within the local subnet.

DHCP

(

ynamic

ost

onfiguration

rotocol) - A protocol that lets network

administrators centrally manage and automate the assignment of Internet

Page 39 / 50

Cable/DSL 4-Port Router

Network Everywhere

™

Series

ations can be performed by typing commands at a command prompt or via an

FTP utility running under a graphical interface such as Windows. FTP transfers

can also be initiated from within a Web browser by entering the URL preceded

with ftp://.

Unlike e-mail programs in which graphics and program files have to be

“attached,” FTP is designed to handle binary files directly and does not add the

overhead of encoding and decoding the data.

Full Duplex

- The ability of a device or line to transmit data simultaneously in

both directions.

Gateway

– A device that interconnects networks with different, incompatible

communications protocols.

Half Duplex

- Data transmission that can occur in two directions over a single

line, but only one direction at a time.

Hardware

- Hardware is the physical aspect of computers, telecommunica-

tions, and other information technology devices. The term arose as a way to dis-

tinguish the “box” and the electronic circuitry and components of a computer

from the program you put in it to make it do things. The program came to be

known as the software.

Hub

- The device that serves as the central location for attaching wires from

workstations. Can be passive, where there is no amplification of the signals; or

active, where the hubs are used like repeaters to provide an extension of the

cable that connects to a workstation.

HTTP (

yper

ext

ransport

rotocol) - The communications protocol used to

connect to servers on the World Wide Web. Its primary function is to establish a

connection with a Web server and transmit HTML pages to the client browser.

IEEE

- The Institute of Electrical and Electronics Engineers. The IEEE

describes itself as “the world's largest technical professional society—promot-

ing the development and application of electrotechnology and allied sciences

for the benefit of humanity, the advancement of the profession, and the well-

being of our members.”

The IEEE fosters the development of standards that often become national and

international standards. The organization publishes a number of journals, has

many local chapters, and has several large societies in special areas, such as the

IEEE Computer Society.

Dynamic IP Address

- An IP address that is automatically assigned to a client

station in a TCP/IP network, typically by a DHCP server. Network devices that

serve multiple users, such as servers and printers, are usually assigned static IP

addresses.

Dynamic Routing

- The ability for a router to forward data via a different route

based on the current conditions of the communications circuits. For example,

it can adjust for overloaded traffic or failing lines and is much more flexible

than static routing, which uses a fixed forwarding path.

Ethernet

- IEEE standard network protocol that specifies how data is placed

on and retrieved from a common transmission medium. Has a transfer rate of

10 Mbps. Forms the underlying transport vehicle used by several upper-level

protocols, including TCP/IP and XNS.

Fast Ethernet

- A 100 Mbps technology based on the 10Base-T Ethernet

CSMA/CD network access method.

Firewall

- A firewall is a set of related programs, located at a network gateway

server, that protects the resources of a network from users from other networks.

(The term also implies the security policy that is used with the programs.) An

enterprise with an intranet that allows its workers access to the wider Internet

installs a firewall to prevent outsiders from accessing its own private data

resources and for controlling what outside resources to which its own users

have access.

Basically, a firewall, working closely with a router, examines each network

packet to determine whether to forward it toward its destination.

Firmware

- Code that is written onto read-only memory (ROM) or program-

mable read-only memory (PROM).

Once firmware has been written onto the

ROM or PROM, it is retained even when the device is turned off.

Fragmentation

- Breaking a packet into smaller units when transmitting over

a network medium that cannot support the original size of the packet.

FTP

(

ile

ransfer

rotocol) - A protocol used to transfer files over a TCP/IP

network (Internet, UNIX, etc.). For example, after developing the HTML pages

for a website on a local machine, they are typically uploaded to the Web serv-

er using FTP.

FTP includes functions to log onto the network, list directories, and copy files.

It can also convert between the ASCII and EBCDIC character codes. FTP oper-

Page 40 / 50

Cable/DSL 4-Port Router

mIRC

- mIRC runs under Windows and provides a graphical interface for log-

ging onto IRC servers and listing, joining, and leaving channels.

Motherboard

- A motherboard is the physical arrangement in a computer that

contains the computer’s basic circuitry and components.

NAT

- NAT (Network Address Translation) is the translation of an Internet

Protocol address (IP address) used within one network to a different IP address

known within another network. One network is designated the inside network

and the other is the outside.

NetBEUI

(

NetB

IOS

xtended

ser

nterface) - The transport layer for

NetBIOS. NetBIOS and NetBEUI were originally part of a single protocol

suite that was later separated. NetBIOS sessions can be transported over

NetBEUI, TCP/IP, and SPX/IPX protocols.

NetBIOS

- The native networking protocol in DOS and Windows networks.

Although originally combined with its transport layer protocol (NetBEUI),

NetBIOS today provides a programming interface for applications at the ses-

sion layer (layer 5). NetBIOS can ride over NetBEUI, its native transport,

which is not routable, or over TCP/IP and IPX/SPX, which are routable proto-

cols.

NetBIOS computers are identified by a unique 15-character name, and

Windows machines (NetBIOS machines) periodically broadcast their names

over the network so that Network Neighborhood can catalog them. For TCP/IP

networks, NetBIOS names are turned into IP addresses via manual configura-

tion in an LMHOSTS file or a WINS server.

There are two NetBIOS modes. The Datagram mode is the fastest mode, but

does not guarantee delivery. It uses a self-contained packet with send and

receive name, usually limited to 512 bytes. If the recipient device is not listen-

ing for messages, the datagram is lost. The Session mode establishes a connec-

tion until broken. It guarantees delivery of messages up to 64KB long.

Network

- A system that transmits any combination of voice, video, and/or

data between users.

Network Mask

- Also known as the “Subnet Mask.”

NIC

(

etwork

nterface

ard) - A board installed in a computer system, usu-

ally a PC, to provide network communication capabilities to and from that com-

puter system. Also called an adapter.

Network Everywhere

™

Series

IP Address

- In the most widely installed level of the Internet Protocol (IP)

today, an IP address is a 32-binary digit number that identifies each sender or

receiver of information that is sent in packets across the Internet. When you

request an HTML page or send e-mail, the Internet Protocol part of TCP/IP

includes your IP address in the message (actually, in each of the packets if more

than one is required) and sends it to the IP address that is obtained by looking

up the domain name in the Uniform Resource Locator you requested or in the

e-mail address you're sending a note to. At the other end, the recipient can see

the IP address of the Web page requestor or the e-mail sender and can respond

by sending another message using the IP address it received.

IPCONFIG

- A utility that provides for querying, defining and managing IP

addresses within a network.

A commonly used utility, under Windows NT and

2000, for configuring networks with static IP addresses.

IPSec

(

nternet

rotocol

Sec

urity) - IPSec is a developing standard for securi-

ty at the network or packet processing layer of network communication. A big

advantage of IPSec is that security arrangements can be handled without

requiring changes to individual user computers.

IRQ

(

nterrupt

uest) - A hardware interrupt on a PC. There are 16 IRQ

lines used to signal the CPU that a peripheral event has started or terminated.

Except for PCI devices, two devices cannot use the same line.

ISP

- An ISP (Internet service provider) is a company that provides individuals

and companies access to the Internet and other related services such as website

building and virtual hosting.

LAN

- A local area network (LAN) is a group of computers and associated

devices that share a common communications line and typically share the

resources of a single processor or server within a small geographic area (for

example, within an office building).

Latency

- The time delay between when the first bit of a packet is received and

the last bit is forwarded.

MAC Address

- The MAC (Media Access Control) address is a unique num-

ber assigned by the manufacturer to any Ethernet networking device, such as a

network adapter, that allows the network to identify it at the hardware level.

Mbps

(

ega

its

econd) - One million bits per second; unit of measure-

ment for data transmission.

Rate

Popular Linksys Models

Famous Router IPs

Famous Router Companies

Bookmark Our Site

Share