How can i control what sites my children can go to on the internet?

i have a 13 year old son and a 7 year old daughter how can i control what the can see on the internetHow can i control what sites my children can go to on the internet?
Go to k9webprotection.com down load it on to the computer.Very easy to set up.Just follow the directions.How can i control what sites my children can go to on the internet?
Buy a program called Net Nanny. download it on your computer.


You can choose the programs they can get to and you can also go back and see where they have been.
Hello,





you can use FIREFOX with FoxFilter addon ...





https://addons.mozilla.org/en-US/firefox鈥?/a>





or you can buy this:





http://www.tueagles.com/anti-porn/
Keep the computer in a shared room in the home and supervise them when they use it.