How to block prohibited sites at home, or office

To prevent your child or your staff in the office to open a porn site.
Try this.

Follow these steps:
1. Open the Control Panel.
2. Or click select the "Internet Options".
3. Click "Connections".
4. Click the modem used for internet on my laptop, home computer or your office.
5. Click "Settings".
6. Click "Propeties".
7th. Click on "Networking".
8. Click "Internet Protocol version 4"
9. Click "Properties".
10. Click "Use the Following DNS server adresses"
11. Fill out the "Preferred DNS Server" with the number "180 131 144 144"
12. The contents of the box "Alternate DNS Server" with the number "180 131 144 145"
13. Click OK to close all dialog boxes that you had passed. END.
Try testing your entry to one of porn or gambling sites. If it successfully blocked the site, means finished all. But if it can still be accessed, try returning to the step above by replacing select the click number eight on the to pick the "Internet Protocol version 6". While other steps remain the same.

Source : id.shvoong.com