NETGEAR DGFV338 Router Manual PDF (Setup & Configuration Guide)

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DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual

LAN Configuration

7-3

v1.0, April 2007

4.

DHCP

Server. By default, the router will function as a DHCP server, providing TCP/IP

configuration for all computers connected to the router's LAN. If another device on your

network will be the DHCP server, or if you will manually configure all devices, select the

Disable DHCP Server

radio button. If the

Enable DHCP Server

radio button is selected,

complete the following fields:

a.

DHCP Log

. Click this button to see the IP addresses which have been allocated by the

DHCP Server to PCs and other DHCP clients.

b.

Starting IP Address

. This box specifies the first of the contiguous addresses in the IP

address pool. 192.168.1.2 is the default start address.

c.

Ending IP Address.

This box specifies the last of the contiguous addresses in the IP

address pool. 192.168.1.254 is the default ending address.

d.

WINS Server

. This box can specify the Windows NetBios Server IP if one is present in

your network.

e.

Lease Time

. This box specifies the Lease time to be given to the DHCP Clients.

5.

Click

Apply

to save your settings.

Using Address Reservation

When you specify a reserved IP address for a PC on the LAN, that PC will always receive the

same IP address each time it access the firewall’s DHCP server. Reserved IP addresses should be

assigned to servers that require permanent IP settings

Note:

If you change the LAN IP address of the firewall while connected through the

browser, you will be disconnected. You must then open a new connection to

the new IP address and log in again.

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DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual

7-4

LAN Configuration

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To reserve an IP address:

1.

Select

Network Configuration

from the main menu and

LAN Groups

from the submenu.

THe

Groups and Hosts

screen will display.

2.

From the

IP Address Type

pull-down menu, select

Reserve

as the address type.

3.

Fill in the remaining fields in the

Add Known PCs and Devices

table and click

Add.

The

Reserved IP address will be added to your

Known PCs and Devices

table (see the Groups and

Hosts Entry screen (see

“Managing Groups and Hosts” on page 4-21

).

Configuring Multi Home LAN IPs

If you have computers on your LAN using different IP address ranges (for example, 172.16.2.0 or

10.0.0.0), then you can add “aliases” to the LAN port thereby giving computers on those networks

access to the Internet. This allows the firewall to act as a gateway to additional logical subnets on

your LAN. You can assign the firewall an IP address on each additional logical subnet

•

The

Available Secondary LAN IPs

table lists the secondary LAN IP addresses added to the

router.

•

The

IP Address

is the “alias” added to the LAN port of the router. This will be the gateway for

computers that need to access the Internet.

•

The

Subnet Mask

is the IPv4 Subnet Mask.

Figure 7-2

Note:

The reserved address will not be assigned until the next time the PC contacts the

firewall's DHCP server. Reboot the PC or access its IP configuration and force a

DHCP release and renew.

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DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual

LAN Configuration

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To add a secondary LAN IP address:

1.

Enter the IP Address and the Subnet Mask in the respective fields of the

Add Secondary LAN

IP Address

section.

2.

Click

Add.

The new Secondary LAN IP address will appear in the

Available Secondary LAN

IPs

table.

To delete any or all entries in the Available Secondary LAN IPs table:

1.

Select the entries using one of the following methods:

•

Click

Select all

to select all the entries in the table. All the radio buttons are selected.

•

Check the individual radio button of each entry you want to delete.

2.

Click

Delete

to delete the entries with checked radio buttons from the Available Secondary

LAN IPs table.

To make changes to the selected entry:

1.

Click

Edit

in the Action column adjacent to the selected entry. The

Edit Secondary LAN IP

Setup

screen will display.

2.

Modify the

IP Address

and

Subnet Mask

fields and click

Apply.

3.

Click

Reset

to discard any changes and revert to the previous settings.

Tip:

The Secondary LAN IP address will be assigned to the LAN interface of the

router and can be used as a gateway by the secondary subnet.

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DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual

7-6

LAN Configuration

v1.0, April 2007

.

Figure 7-3

Note:

Additional IP addresses cannot be configured in the DHCP server. The hosts on

the secondary subnets must be manually configured with IP addresses,

gateway IP and DNS server IPs.

Page 185 / 212

DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual

LAN Configuration

7-7

v1.0, April 2007

Configuring Static Routes

Static Routes provide additional routing information to your firewall. Under normal

circumstances, the firewall has adequate routing information after it has been configured for

Internet access, and you do not need to configure additional static routes. You must configure

static routes only for unusual cases such as multiple firewalls or multiple IP subnets located on

your network.

Adding or Editing a Static Route

To add or edit a static route:

1.

Select

Network Configuration

from the main menu and

Routing

from the submenu. The

Routing

screen will display.

2.

Click

Add

. The

Add Static Route

menu, shown below, will display.

3.

Enter a route name for this static route in the

Route Name

field (for identification and

management).

4.

Select Active to make this route effective.

Figure 7-4

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