Owner's Manual

VPN Configuration
154
N600 Wireless Dual Band Gigabit VDSL2 Modem Router DGND3800B
b. For the remote WAN’s IP address, enter 22.23.24.25.
c. Enter the following:
• IP Address. 172.23.9.1
• Subnet Mask. 255.255.255.0
d. In the Summary screen, click Done.
2. Use the VPN Wizard to configure the Gateway B for a gateway-to-gateway tunnel (see Add
a Gateway-to-Gateway VPN Tunnel on page 125), being certain to use appropriate
network addresses for the environment.
a. For the connection name, enter toGW_A.
b. For the remote WAN’s IP address, enter 14.15.16.17.
c. Enter the following:
• IP Address. 10.5.6.1
• Subnet Mask. 255.255.255.0
d. In the Summary screen, click Done.
3. Test the VPN tunnel by pinging the remote network from a computer attached to Gateway A
(modem router).
a. Open the command prompt (select Start > Run > cmd).
b. Type ping 172.23.9.
If the pings fail the first time, try the pings a second time.
Modem Router with FQDN to Gateway B
This section is a case study on how to configure a VPN tunnel from your modem router to a
gateway using a fully qualified domain name (FQDN) to resolve the public address of one or
both routers. This case study follows the VPN Consortium interoperability profile guidelines
(visit
http://www.vpnc.org/InteropProfiles/Interop-01.html).
Configuration Profile
The configuration in this section follows the addressing and configuration mechanics defined
by the VPN Consortium. Gather the necessary information before you begin configuration.