User's Manual

86 | Chapter 7. Virtual Private Networking
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700 User Manual
Gateway-to-Gateway VPN Tunnels
Gateway-to-gateway VPN tunnels provide secure access between networks, such as a
branch or home office and a main office.
VPN Tunnel
Internet
Modem Router DGND3700
Gateway A
(Home)
Modem Router DGND3700
Gateway B
(Office)
Figure 42. VPN Tunnel between Networks
A VPN between two or more NETGEAR VPN-enabled routers is a good way to connect
branch or home offices and business partners over the Internet. VPN tunnels also enable
access to network resources across the Internet. In this case, use gateways on each end of
the tunnel to form the VPN tunnel end points. See Setting Up a Gateway-to-Gateway VPN
Configuration on page 99 for information about how to set up this configuration.
Planning a VPN
When you set up a VPN, it is helpful to plan the network configuration and record the
configuration parameters on a worksheet:
Table 15. VPN Tunnel Configuration Worksheet
Parameter Value to Be Entered Field Selection
Connection Name N/A
Pre-Shared Key N/A
Secure Association N/A Main Mode Manual Keys
Perfect Forward Secrecy N/A Enabled Disabled
Encryption Protocol N/A DES 3DES
Authentication Protocol N/A MD5 SHA-1
Diffie-Hellman (DH) Group N/A Group 1 Group 2
Key Life in seconds N/A
IKE Life Time in seconds N/A