The manual was useless, and requests to both Tritton and ioGEAR for a detailed IPsec setup example were fruitless (I did learn that Perfect Forward Secrecy isn't supported, however). And if you decide to try to figure it out yourself, the IPsec client you use better give you any debugging information you need since tunnel setup logging isn't available for either PPTP or IPsec!

If you need to connect to a remote VPN gateway through the router, PPTP and IPsec pass through are supported, but not L2TP. Both companies say there is no hard limit on the number of pass through sessions, and that they can connect to multiple remote gateways. Forget planning on setting up your own PPTP or IPsec gateways behind the product, however, since the Virtual Server feature won't support the protocols required for either VPN method.