I am in charge of a small office network that has < 10 users. I want to be able to offer them access to the network from their home internet connections. At the moment we have a regular ADSL-router-firewall to provide local network access and a fixed IP address.

I know there are enterprise-level VPN solutions, but these obviously won't be available to us because of the cost and complexity.

What small-scale solutions are around that you could recommend, what would we need to deploy on the client side, and what would the clients need to do to access the VPN?

Simplicity and low cost need to be the keys here.

Thanks