I have a client who would like to place a computer in the public part of their office for use by visitors. They would like to restrict access to a pre-selected list of sites.
As the client is a charity, we'd like to keep things as cheap as possible. That eliminates the use of a hardware solution including putting in a separate linux box to act as a proxy.
Can anyone recommend some free/cheap proxy software that can be configured to proxy only sites from an authorised list? It should run on Windows XP.