NETGEAR FVS124G Router Manual PDF (Setup & Configuration Guide)

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Reference Manual for the ProSafe VPN Firewall 25 with 4 Gigabit LAN and Dual WAN Ports

Preparing Your Network

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202-10085-01, March 2005

•

An IP address and subnet mask

•

A gateway IP address, which is the address of the ISP’s router

•

One or more domain name server (DNS) IP addresses

•

Host name and domain suffix

For example, your account’s full server names may look like this:

mail.xxx.yyy.com

In this example, the domain suffix is

xxx.yyy.com

.

If any of these items are dynamically supplied by the ISP, your firewall automatically acquires

them.

If an ISP technician configured your PC during the installation of the broadband modem, or if you

configured it using instructions provided by your ISP, you need to copy the configuration

information from your PC’s Network TCP/IP Properties window or Macintosh TCP/IP Control

Panel before reconfiguring your PC for use with the firewall. These procedures are described next.

Obtaining ISP Configuration Information for Windows Computers

As mentioned above, you may need to collect configuration information from your PC so that you

can use this information when you configure the FVS124G VPN Firewall. Following this

procedure is only necessary when your ISP does not dynamically supply the account information.

To get the information you need to configure the firewall for Internet access:

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.

3.

Select TCP/IP, and then click Properties.

The TCP/IP Properties dialog box opens.

4.

Select the IP Address tab.

If an IP address and subnet mask are shown, write down the information. If an address is

present, your account uses a fixed (static) IP address. If no address is present, your account

uses a dynamically-assigned IP address. Click “Obtain an IP address automatically”.

5.

Select the Gateway tab.

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Reference Manual for the ProSafe VPN Firewall 25 with 4 Gigabit LAN and Dual WAN Ports

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If an IP address appears under Installed Gateways, write down the address. This is the ISP’s

gateway address. Select the address and then click Remove to remove the gateway address.

6.

Select the DNS Configuration tab.

If any DNS server addresses are shown, write down the addresses. If any information appears

in the Host or Domain information box, write it down. Click Disable DNS.

7.

Click OK to save your changes and close the TCP/IP Properties dialog box.

You are returned to the Network window.

8.

Click OK.

9.

Reboot your PC at the prompt. You may also be prompted to insert your Windows CD.

Obtaining ISP Configuration Information for Macintosh

Computers

As mentioned above, you may need to collect configuration information from your Macintosh so

that you can use this information when you configure the FVS124G VPN Firewall. Following this

procedure is only necessary when your ISP does not dynamically supply the account information.

To get the information you need to configure the firewall for Internet access:

1.

From the Apple menu, select Control Panels, then TCP/IP.

The TCP/IP Control Panel opens, which displays a list of configuration settings. If the

“Configure” setting is “Using DHCP Server”, your account uses a dynamically-assigned IP

address. In this case, close the Control Panel and skip the rest of this section.

2.

If an IP address and subnet mask are shown, write down the information.

3.

If an IP address appears under Router address, write down the address. This is the ISP’s

gateway address.

4.

If any Name Server addresses are shown, write down the addresses. These are your ISP’s DNS

addresses.

5.

If any information appears in the Search domains information box, write it down.

6.

Change the “Configure” setting to “Using DHCP Server”.

7.

Close the TCP/IP Control Panel.

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Reference Manual for the ProSafe VPN Firewall 25 with 4 Gigabit LAN and Dual WAN Ports

Preparing Your Network

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202-10085-01, March 2005

Restarting the Network

Once you’ve set up your computers to work with the firewall, you must reset the network for the

devices to be able to communicate correctly. Restart any computer that is connected to the

FVS124G VPN Firewall.

After configuring all of your computers for TCP/IP networking and restarting them, and

connecting them to the local network of your FVS124G VPN Firewall, you are ready to access and

configure the firewall.

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Reference Manual for the ProSafe VPN Firewall 25 with 4 Gigabit LAN and Dual WAN Ports

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Virtual Private Networking

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202-10085-01, March 2005

Appendix D

Virtual Private Networking

There have been many improvements in the Internet including Quality of Service, network

performance, and inexpensive technologies, such as DSL. But one of the most important advances

has been in Virtual Private Networking (VPN) Internet Protocol security (IPSec). IPSec is one of

the most complete, secure, and commercially available, standards-based protocols developed for

transporting data.

What is a VPN?

A VPN is a shared network where private data is segmented from other traffic so that only the

intended recipient has access. The term VPN was originally used to describe a secure connection

over the Internet. Today, however, VPN is also used to describe private networks, such as Frame

Relay, Asynchronous Transfer Mode (ATM), and Multiprotocol Label Switching (MPLS).

A key aspect of data security is that the data flowing across the network is protected by encryption

technologies. Private networks lack data security, which allows data attackers to tap directly into

the network and read the data. IPSec-based VPNs use encryption to provide data security, which

increases the network’s resistance to data tampering or theft.

IPSec-based VPNs can be created over any type of IP network, including the Internet, Frame

Relay, ATM, and MPLS, but only the Internet is ubiquitous and inexpensive.

VPNs are traditionally used for:

•

Intranets:

Intranets connect an organization’s locations. These locations range from the

headquarters offices, to branch offices, to a remote employee’s home. Often this connectivity

is used for e-mail and for sharing applications and files. While Frame Relay, ATM, and MPLS

accomplish these tasks, the shortcomings of each limits connectivity. The cost of connecting

home users is also very expensive compared to Internet-access technologies, such as DSL or

cable. Because of this, organizations are moving their networks to the Internet, which is

inexpensive, and using IPSec to create these networks.

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