A while back i used IPcop (http://www.ipcop.org/) It is basically a Linux firewall with alot of neat stuff attached to it. Works with ADSL/Cable/PPPoe ect. You might want to look at the proxy configuration. You may also need an addon that will filter what you want. The addon is updated daily and it will block those sites you don't want your child to visit. Very easy to setup and use. I also like the POP3 Proxy, this will scannall incomming e-mail and filter junk mail.
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A while back i used IPcop (http://www.ipcop.org/) It is basically a Linux firewall with alot of neat stuff attached to it. Works with ADSL/Cable/PPPoe ect. You might want to look at the proxy configuration. You may also need an addon that will filter what you want. The addon is updated daily and it will block those sites you don't want your child to visit. Very easy to setup and use. I also like the POP3 Proxy, this will scannall incomming e-mail and filter junk mail.