User's Manual

110 | Chapter 7. Virtual Private Networking
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700 User Manual
policy does not use IKE. Rather, you manually enter all the authentication and key
parameters. You have more control over the process; however, the process is more
complex, and there are more opportunities for errors or configuration mismatches
between your N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700 and
the corresponding VPN endpoint gateway or client workstation.
Using Auto Policy to Configure VPN Tunnels
You need to configure matching VPN settings on both VPN endpoints. The outbound VPN
settings on one end must match to the inbound VPN settings on other end, and vice versa.
For an example of using Auto Policy, see Example of Using Auto Policy on page 114.
Configuring VPN Network Connection Parameters
All VPN tunnels on the wireless modem router require that you configure several network
parameters. This section describes those parameters and how to access them.
The most common configuration scenarios use IKE to manage the authentication and
encryption keys. The IKE protocol performs negotiations between the two VPN endpoints to
automatically generate and update the required encryption parameters.
From the main menu, select VPN Policies, and then click the Add Auto Policy button to
display the VPN - Auto Policy screen: