Netgear DGND3300 User Manual Page 78

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78 | Chapter 6. Virtual Private Networking
N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual
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:
To set up a VPN connection, you must configure each endpoint with specific identification and
connection information describing the other endpoint. You must configure the outbound VPN
settings on one end to match the inbound VPN settings on other end, and vice versa.
This set of configuration information defines a security association (SA) between the two
VPN endpoints. When planning your VPN, you must make a few choices first:
Will the local end be any device on the LAN, a portion of the local network (as defined by
a subnet or by a range of IP addresses), or a single PC?
Will the remote end be any device on the remote LAN, a portion of the remote network (as
defined by a subnet or by a range of IP addresses), or a single PC?
Will either endpoint use fully qualified domain names (FQDNs)? FQDNs supplied by
Dynamic DNS providers (see Using a Fully Qualified Domain Name (FQDN) on
page 154) can allow a VPN endpoint with a dynamic IP address to initiate or respond to a
tunnel request. Otherwise, the side using a dynamic IP address must always be the
initiator.
Which method will you use to configure your VPN tunnels?
- The VPN Wizard using VPNC defaults (see Table 2)
Table 1. 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
VPN Endpoint Local IPSecID LAN IP Address Subnet Mask FQDN or Gateway
IP (WAN IP Address
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