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Page 46 / 212 Scroll up to view Page 41 - 45
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
2-16
Basic Installation and Configuration
v1.0, April 2007
3.
Select your WAN port configuration:
•
Select the Auto-Rollover radio button and designate the rollover port from the pull-down
menu. Auto-Rollover is available only if you have connected and configured both an
ADSL ISP and an Ethernet ISP connection.
•
Select the Use Dedicated WAN port radio button and select the dedicated port from the
pull-down menu if you have configured and are connected to only one port.
4.
Select the WAN Failure Detection Method, if Auto-Rollover is selected:
•
Select DNS lookup using this DNS Server and enter the server address (default), or
•
Select the Ping to this IP address and enter the ping address.
Once a rollover occurs, when the primary port is restored, the router will automatically switch
back to the designated primary port.
Figure 2-9
Page 47 / 212
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
Basic Installation and Configuration
2-17
v1.0, April 2007
The default time to roll over after the primary WAN interface fails is 2 minutes (e.g., a 30-
second minimum test period, times a minimum of four tests).
Configuring Dynamic DNS (If Needed)
If your network has a permanently assigned (static or fixed) IP address, you can register a domain
name and have that name linked with your IP address by public Domain Name Servers (DNS).
However, if your Internet account uses a dynamically assigned IP address, you will not know in
advance what your IP address will be, and the address can change frequently. In this case, you can
use a commercial dynamic DNS service, which allows you to register an extension to its domain,
and resolves DNS requests for the resulting FQDN to your frequently-changing IP address.
For rollover mode, you will need a fully qualified domain name (FQDN) to implement features
such as exposed hosts and virtual private networks regardless of whether you have a fixed or
dynamic IP address.
The gateway contains a client that can connect to a dynamic DNS service provider. To use this
feature, you must select a service provider and obtain an account with them. After you have
configured your account information in the gateway, whenever your ISP-assigned IP address
changes, your gateway will automatically contact your dynamic DNS service provider, log in to
your account, and register your new IP address.
Note:
If your ISP assigns a private WAN IP address such as 192.168.x.x or 10.x.x.x, the
dynamic DNS service will not work because private addresses will not be routed
on the Internet.
Page 48 / 212
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
2-18
Basic Installation and Configuration
v1.0, April 2007
To configure Dynamic DNS:
1.
Select
Network Configuration
from the main menu and
Dynamic DNS
from the submenu.
The
Dynamic DNS Configuration
screen will display with the default None selected.
Each DNS service provider requires its own parameters (
Figure 2-11
).
Figure 2-10
Page 49 / 212
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
Basic Installation and Configuration
2-19
v1.0, April 2007
2.
Access the Web site of the Dynamic DNS service provider you have chosen and register for an
account (for example, for dyndns.org, go to
).
3.
Complete entering the Dynamic DNS screen for the service you have chosen:
a.
Select the Use a dynamic DNS service check box of the name of your dynamic DNS
Service Provider.
b.
Enter the entire FQDN that your dynamic DNS service provider gave you,
(for example,
myName.dyndns.org
).
c.
Enter the User Name and Password (or key) for logging into your dynamic DNS account.
d.
If your dynamic DNS provider allows the use of wild cards in resolving your URL, you
may select the Use wild cards check box to activate this feature.
For example, the wildcard feature will cause
*.yourhost.dyndns.org
to be aliased
to the same IP address as
yourhost.dyndns.org
4.
Click
Apply
to save your configuration.
Figure 2-11
DynDNS Service Screen
Page 50 / 212
DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
2-20
Basic Installation and Configuration
v1.0, April 2007
Programming the Traffic Meter
The traffic meter is useful when an ISP charges by traffic volume over a given period of time or if
you want to look at traffic types over a period of time. The fields are described in
Table 2-2
and are
the same for both ADSL and Ethernet but are specific to each WAN interface and must be set
individually.
Figure 2-12
displays the traffic meter screen for the ADSL connection.
Figure 2-12
Traffic Meter ADSL

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