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Page 176 / 212 Scroll up to view Page 171 - 175
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
6-28
Router and Network Management
v1.0, April 2007
Router Upgrade
You can install a different version of the wireless firewall firmware from the
Settings Backup and
Firmware Upgrade
screen. To view the current version of the firmware that your wireless
firewall is running, select
Monitoring
from the main menu. The
Router Status
screen on the will
display all of the wireless firewall router statistics. When you upgrade your firmware, the
Firmware Version will change to reflect the new version.
To download a firmware version:
1.
Go to the NETGEAR Web site at
and click on
Downloads.
2.
From the
Product Selection
pull-down menu, select your product. Select the software version
and follow the
To Install
steps to download your software.
After downloading an upgrade file, you may need to unzip (uncompress) it before upgrading
the router. If Release Notes are included in the download, read them before continuing.
Figure 6-16
Warning:
Once you click
Upload
do NOT interrupt the router!
Page 177 / 212
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
Router and Network Management
6-29
v1.0, April 2007
To upgrade router software:
1.
Select
Administration
from the main menu and
Settings Backup and Firmware Upgrade
from the submenu. The
Settings Backup and Firmware Upgrade
screen will display.
2.
Click
Browse
in the
Router Upgrade
section.
3.
Locate the downloaded file and click
Upload.
This will start the software upgrade to your
wireless firewall router. This may take some time. At the conclusion of the upgrade, your
router will reboot.
After the wireless firewall has rebooted, select
Monitoring
and confirm the new firmware
version to verify that your router now has the new software installed.
Setting the Time Zone
Date, time and NTP Server designations can be input on the
Time Zone
screen. Network Time
Protocol (NTP) is a protocol that is used to synchronize computer clock times in a network of
computers Select
Administration
from the main menu and
Time Zone
from the submenu. The
Time Zone
screen will display.
To set Time, Date and NTP servers:
1.
From the
Date/Time
pull-down menu, select the Local Time Zone. This is required in order
for scheduling to work correctly. The wireless firewall includes a Real-Time Clock (RTC),
which it uses for scheduling.
2.
If supported in your region, check the
Automatically Adjust for Daylight Savings Time
radio box.
3.
Select a NTP Server option by checking one of the following radio boxes:
•
Use Default NTP Servers
: If this is enabled, then the RTC (Real-Time Clock) is updated
regularly by contacting a Default Netgear NTP Server on the Internet.
Warning:
Do not try to go online, turn off the router, shutdown the computer or do
anything else to the router until the router finishes the upgrade! When the
Test light turns off, wait a few more seconds before doing anything.
Note:
In some cases, such as a major upgrade, it may be necessary to erase the
configuration and manually reconfigure your router after upgrading it. Refer to
the Release Notes included with the software to find out if this is required.
Page 178 / 212
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
6-30
Router and Network Management
v1.0, April 2007
•
Use Custom NTP Servers
: If you prefer to use a particular NTP server, enable this
instead and enter the name or IP address of an NTP Server in the
Server 1 Name/IP
Address
field.
If required, you can also enter the address of another NTP server in the
Server 2 Name/IP
Address
field. If you select this option and leave either the Server 1 or Server 2 fields
empty, they will be set to the Default Netgear NTP servers.
4.
Click
Apply
to save your settings or click
Cancel
to revert to your previous settings.
Figure 6-17
Page 179 / 212
LAN Configuration
7-1
v1.0, April 2007
Chapter 7
LAN Configuration
This chapter describes how to configure the advanced LAN features of your ProSafe Wireless
ADSL Modem VPN Firewall Router. These features can be found by selecting Network
Configuration from the primary menu and LAN Setup from the submenu of the browser interface.
Using the Firewall as a DHCP server
By default, the firewall will function as a DHCP (Dynamic Host Configuration Protocol) server,
allowing it to provide an IP address, DNS server address, WINS Server address, and default
gateway address to all computers connected to the firewall LAN. The assigned default gateway
address is the LAN address of the firewall. IP addresses will be assigned to the attached PCs from
a pool of addresses specified in this menu. Each pool address is tested before it is assigned to avoid
duplicate addresses on the LAN.
For most applications, the default DHCP and TCP/IP settings of the firewall are satisfactory. See
the link to “Preparing a Computer for Network Access” in
Appendix B, “Related Documents”
for
an explanation of DHCP and information about how to assign IP addresses for your network.
If another device on your network will be the DHCP server, or if you will manually configure the
network settings of all of your computers, clear the
Enable DHCP server
radio box by selecting
the
Disable DHCP Server
radio box. Otherwise, leave it checked.
Specify the pool of IP addresses to be assigned by setting the Starting IP Address and Ending IP
Address. These addresses should be part of the same IP address subnet as the firewall’s LAN IP
address. Using the default addressing scheme, you should define a range between 192.168.1.2 and
192.168.1.100, although you may wish to save part of the range for devices with fixed addresses.
The firewall will deliver the following parameters to any LAN device that requests DHCP:
•
An IP Address from the range you have defined.
•
Subnet Mask.
•
Gateway IP Address (the firewall’s LAN IP address).
•
Primary DNS Server (the firewall’s LAN IP address).
•
WINS Server (if you entered a WINS server address in the DHCP Setup menu).
•
Lease Time (date obtained and duration of lease).
Page 180 / 212
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
7-2
LAN Configuration
v1.0, April 2007
Configuring the LAN Setup Options
The
LAN IP Setup
menu allows configuration of LAN IP services such as DHCP and allows you
to configure a secondary or “multi-home” LAN IP setup in the LAN. The default values are
suitable for most users and situations. These are advanced settings most usually configured by a
network administrator.
To change the LAN IP services:
1.
Select
Network Configuration
from the main menu and
LAN Setup
from the submenu of the
browser interface. The
LAN IP Setup
screen will display.
2.
Enter the
IP Address
of your router (factory default:
192.168.1.1
). Make sure that LAN Port
IP address and DMZ port IP address are in different subnets.
3.
Enter the
IP Subnet Mask
. The subnet mask specifies the network number portion of an IP
address. Your router will automatically calculate the subnet mask based on the IP address that
you assign. Unless you are implementing subnetting, use 255.255.255.0 as the subnet mask
(computed by the router).
Figure 7-1
Note:
Once you have completed the LAN IP setup, all outbound traffic is allowed and all
inbound traffic is discarded. To change these traffic rules, refer to
Chapter 4,
“Security and Firewall Protection
.

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