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Reference Manual for the Model Wireless ADSL Firewall Router DG834G
NETGEAR VPN Configuration
F-7
202-10006-05, June 2005
Figure F-5:
Addressing and Subnet Used for Examples
The Use of a Fully Qualified Domain Name (FQDN)
Many ISPs (Internet Service Providers) provide connectivity to their customers using dynamic
instead of static IP addressing. This means that a user’s IP address does not remain constant over
time which presents a challenge for gateways attempting to establish VPN connectivity.
Table F-1.
Profile Summary
VPN Consortium Scenario:
Scenario 1
Type of VPN
LAN-to-LAN or Gateway-to-Gateway (not PC/Client-to-Gateway)
Security Scheme:
IKE with Preshared Secret/Key (not Certificate-based)
Date Tested:
June 2004
Model/Firmware Tested:
NETGEAR-Gateway A
DG834G firmware version V2.10.17
NETGEAR-Gateway B
FVL328 with firmware version V2.0_07
IP Addressing:
NETGEAR-Gateway A
Fully Qualified Domain Name (FQDN)
NETGEAR-Gateway B
FDQN
Note:
Product updates are available on the NETGEAR, Inc. web site at
.
Gateway A
fvl328.dyndns.org
dg834g.dyndns.org
10.5.6.0/24
172.23.9.0/24
172.23.9.1
10.5.6.1
WAN IP
WAN IP
LAN IP
LAN IP
Gateway B
VPNC Example
Network Interface Addressing
DG834G
FVL328
(FQDN)
(FQDN)
Page 242 / 268
Reference Manual for the Model Wireless ADSL Firewall Router DG834G
F-8
NETGEAR VPN Configuration
202-10006-05, June 2005
A Dynamic DNS (DDNS) service allows a user whose public IP address is dynamically assigned
to be located by a host or domain name. It provides a central public database where information
(such as email addresses, host names and IP addresses) can be stored and retrieved. Now, a
gateway can be configured to use a 3
rd
party service in lieu of a permanent and unchanging IP
address to establish bi-directional VPN connectivity.
To use DDNS, you must register with a DDNS service provider. Example DDNS Service
Providers include:
•
DynDNS: www.dyndns.org
•
TZO.com: netgear.tzo.com
•
ngDDNS: ngddns.iego.net
In this example, Gateway A is configured using an example FQDN provided by a DDNS Service
provider. In this case we established the hostname
dg834g.dyndns.org
for gateway A using the
DynDNS service. Gateway B will use the DDNS Service Provider when establishing a VPN
tunnel.
In order to establish VPN connectivity Gateway A must be configured to use Dynamic DNS, and
Gateway B must be configured to use a DNS hostname to find Gateway A provided by a DDNS
Service Provider. Again, the following step-by-step procedures assume that you have already
registered with a DDNS Service Provider and have the configuration information necessary to set
up the gateways.
Step-By-Step Configuration
1.
Log in to the DG834G labeled Gateway A as in the illustration.
Out of the box, the DG834G is set for its default LAN address of
with its
default user name of
admin
and default password of
password
. For this example we will
assume you have set the local LAN address as 10.5.6.1 for Gateway A and have set your own
password.
2.
Click on the Dynamic DNS link on the left side of the Settings management GUI. This will
take you to the Dynamic DNS Menu.
Page 243 / 268
Reference Manual for the Model Wireless ADSL Firewall Router DG834G
NETGEAR VPN Configuration
F-9
202-10006-05, June 2005
3.
On the DG834G, configure the Dynamic DNS settings.
a.
Browse to the Dynamic DNS Setup Screen (see
Figure F-6
) in the Advanced menu.
Figure F-6:
Dynamic DNS Setup Screen
b.
Configure this screen with appropriate account and hostname settings and then click
Apply
.
•
Check the box
Use a Dynamic DNS Service
.
•
Host Name = dg834g.dyndns.org
•
User Name = <user's account username>
•
Password = <user's account password>
c.
Click
Show Status
. The resulting screen should show Update OK: good (see
Figure F-7
).
Figure F-7:
Status Screen
Page 244 / 268
Reference Manual for the Model Wireless ADSL Firewall Router DG834G
F-10
NETGEAR VPN Configuration
202-10006-05, June 2005
4.
On the FVL328, configure the Dynamic DNS settings. Assume a properly configured
DynDNS account.
a.
Browse to the Dynamic DNS Setup Screen (see
Figure F-8
) in the Advanced menu.
Figure F-8:
Dynamic DNS Setup Screen
b.
Select the DynDNS.org radio button (see
Figure F-8
), configure with appropriate account
and hostname settings (see
Figure F-9
), and then click
Apply
.
•
Host and Domain Name = fvl328.dyndns.org
•
User Name = <user's account username>
•
Password = <user's account password>
Page 245 / 268
Reference Manual for the Model Wireless ADSL Firewall Router DG834G
NETGEAR VPN Configuration
F-11
202-10006-05, June 2005
Figure F-9:
Dynamic DNS Setup Screen
c.
Click
Show Status
. The resulting screen should show Update OK: good (see
Figure F-10
).
Figure F-10:
Status Screen

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