User's Manual

Wireless ADSL Router User Guide
Common VPN Situations
VPN Pass-through
Figure 79: VPN Pass-through
Here, a PC on the LAN behind the Router/Gateway is using VPN software, but the
Router/Gateway is NOT acting as a VPN endpoint. It is only allowing the VPN connection.
• The PC software can use any VPN protocol supported by the remote VPN.
• The remote VPN Server must support client PCs which are behind a NAT router, and so
have an IP address which is not valid on the Internet.
• The Router/Gateway requires no VPN configuration, since it is not acting as a VPN
endpoint.
Client PC to VPN Gateway
Figure 80: Client PC to VPN Server
In this situation, the PC must run appropriate VPN client software in order to connect, via the
Internet, to the Wireless ADSL Router or other VPN Gateway. Once connected, the client PC
has the same access to LAN resources as PCs on the local LAN (unless restricted by the
network administrator).
• IPsec is not the only protocol which can be used in this situation, but the Wireless ADSL
Router supports IPsec ONLY.
• Windows 2000 and Windows XP include an IPsec VPN client program. However,
configuration of this client program for use with the Wireless ADSL Router is very
complex and beyond the scope of this document.
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