The developers of iNet Protector make the rather vague and ambitious claim that their program is the world's number one tool for controlling Internet access. Whether or not this is true, it's certainly a decent application which easily gives you more control over who or what is accessing the internet on your PC.
With iNet Protector you can restrict internet access at specified times or on demand. A more general solution is to add password protection to your connection. If you're still surfing on a modem or are worried about how much time the kids are spending online, the timer feature allows you to disable your Internet connection after a specified period of time.
Alternatively, if you don't want people surfing on your PC but don't mind them sending e-mail, you can limit which programs have access to the internet. This is particularly useful for employers who are worried about employees spending too much time surfing the net.
This is a simple but effective program which as a basic solution, works very well. It's well presented with an easy to use interface. There's not much to fault it except the fact that anyone with a bit of network experience would probably be able to circumvent or disable it.
