Reference Manual for the Double 108 Mbps Wireless Firewall Router WGU624

Network, Routing, Firewall, and Basics

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The WGU624 wireless router incorporates Auto Uplink

TM

technology (also called MDI/MDIX).

Each LOCAL Ethernet port will automatically sense whether the Ethernet cable plugged into the

port should have a normal connection (e.g. connecting to a PC) or an uplink connection (e.g.

connecting to a router, switch, or hub). That port will then configure itself to the correct

configuration. This feature also eliminates the need to worry about crossover cables, as Auto

Uplink

TM

will accommodate either type of cable to make the right connection.

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Network, Routing, Firewall, and Basics

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Preparing Your Network

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Appendix C

Preparing Your Network

This appendix describes how to prepare your network to connect to the Internet through the

Double 108 Mbps Wireless Firewall Router WGU624 and how to verify the readiness of

broadband Internet service from an Internet service provider (ISP).

Preparing Your Computers for TCP/IP Networking

Computers access the Internet using a protocol called TCP/IP (Transmission Control Protocol/

Internet Protocol). Each computer on your network must have TCP/IP installed and selected as its

networking protocol. If a Network Interface Card (NIC) is already installed in your PC, then TCP/

IP is probably already installed as well.

Most operating systems include the software components you need for networking with TCP/IP:

•

Windows

®

95 or later includes the software components for establishing a TCP/IP network.

•

Windows 3.1 does not include a TCP/IP component. You need to purchase a third-party TCP/

IP application package such as NetManage Chameleon.

•

Macintosh Operating System 7 or later includes the software components for establishing a

TCP/IP network.

•

All versions of UNIX or Linux include TCP/IP components. Follow the instructions provided

with your operating system or networking software to install TCP/IP on your computer.

Note:

If an ISP technician configured your computer during the installation of a

broadband modem, or if you configured it using instructions provided by your ISP, you

may need to copy the current configuration information for use in the configuration of

your firewall. Write down this information before reconfiguring your computers. Refer

to

“Obtaining ISP Configuration Information for Windows Computers

” on

page C-19

or

“Obtaining ISP Configuration Information for Macintosh Computers

” on

page C-20

for

further information.

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In your IP network, each PC and the firewall must be assigned a unique IP addresses. Each PC

must also have certain other IP configuration information such as a subnet mask (netmask), a

domain name server (DNS) address, and a default gateway address. In most cases, you should

install TCP/IP so that the PC obtains its specific network configuration information automatically

from a DHCP server during bootup. For a detailed explanation of the meaning and purpose of

these configuration items, refer to “

Appendix B, “Network, Routing, Firewall, and Basics

.”

The WGU624 wireless router is shipped preconfigured as a DHCP server. The firewall assigns the

following TCP/IP configuration information automatically when the PCs are rebooted:

•

PC or workstation IP addresses—192.168.1.2 through 192.168.1.254

•

Subnet mask—255.255.255.0

•

Gateway address (the firewall)—192.168.1.1

These addresses are part of the IETF-designated private address range for use in private networks.

Configuring Windows 95, 98, and Me for TCP/IP Networking

As part of the PC preparation process, you need to manually install and configure TCP/IP on each

networked PC. Before starting, locate your Windows CD; you may need to insert it during the

TCP/IP installation process.

Install or Verify Windows Networking Components

To install or verify the necessary components for IP networking:

1.

On the Windows taskbar, click the Start button, point to Settings, and then click Control Panel.

2.

Double-click the Network icon.

The Network window opens, which displays a list of installed components:

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You must have an Ethernet adapter, the TCP/IP protocol, and Client for Microsoft Networks.

If you need to install a new adapter, follow these steps:

a.

Click the Add button.

b.

Select Adapter, and then click Add.

c.

Select the manufacturer and model of your Ethernet adapter, and then click OK.

If you need TCP/IP:

a.

Click the Add button.

b.

Select Protocol, and then click Add.

c.

Select Microsoft.

d.

Select TCP/IP, and then click OK.

Note:

It is not necessary to remove any other network components shown in the

Network window in order to install the adapter, TCP/IP, or Client for Microsoft

Networks.