The cheapest way is to use an old pc, and install linux server on it..
I provide internet free access to few appartments in my building. In exchange, I request to monitor the connection and block any porn or other offensive website. That may also reduce the risk of virus too.
Are there any free or cheap software that can allow me to do that from my laptop- without having to install anything on each and every other computers?
NOTE: I am conneting all other computers to the wirelss access point
I tried the cnet website, but am not an expert, so it's confusing.
Thanks you very much for your help