NETGEAR VPN Configuration
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N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700
Use a Fully Qualified Domain Name (FQDN)
Many ISPs 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.
A Dynamic DNS (DDNS) service allows a user whose pub
lic 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 third-party service instead of a
permanent and unchanging IP address to establish bidirectional VPN connectivity.
To use DDNS, you have to register with a DDNS service provider
. Some DDNS service
providers include:
• DynDNS: ww
w.dyndns.org
• TZO.com: netg
ear.tzo.com
• ngDDNS: ngddns.iego.net
In this example, Gateway A is configured usin
g a sample FQDN provided by a DDNS service
provider. In this case the hostname dgnd3300v2.dyndns.org for Gateway A was provided
using the DynDNS service. Gateway B uses the DDNS service provider when establishing a
VPN tunnel.
To establish VPN connectivity, Gateway A has t
o be configured to use Dynamic DNS, and
Gateway B has to be configured to use a DNS host name provided by a DDNS service
provider to find Gateway A. 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
To configure a VPN tunnel:
1. L
og in to Gateway A (your wireless modem router) as described in Log In to the N600
Modem Router on
page 24.
This example assumes that you have set the local L
AN address as 10.5.6.1 for Gateway
A and have set your own password.
2. On Gate
way A, configure the Dynamic DNS settings.
NETGEAR-Gateway A Fully qualified domain name (FQDN)
NETGEAR-Gateway B FQDN
Table 25. Wireless modem router with FQDN to Gateway B profile summary (continued)
VPN Consortium Scenario Scenario 1
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