Restricting access to certain web sites using the content advisor in Internet Explorer 7 & 8.
Steps
1. Open Internet Explorer and click Tools in the top file menu bar. Then click the Content Tab at the top.
2. Click the Enable button under the content advisor heading above and then click the Approved Sites Tab.
3. Type the web site in the Allow this website box above. Be sure to click the Never button to the right of the above box.
4. Next click the General Tab at the top and under User options make sure the Users can see website that have no rating check box is checked.
Note: It is important that you check the above User option check box to prevent other sites from being blocked.
5. After you have blocked a website when a user trys to access the site they receive the above blocked page message.
Blocking web sites using Group Policy on the server.
You can also block websites for all computers on your domain network using the above Security Zones and Content Ratings dialog box within the GPO.
Steps
1. Click the Import the current Content Ratings settings and then the Modify Settings button in the above dialog.
2. Follow steps 1 - 5 above just the same way.
Note: To work properly it is important that the Server and the workstations on your domain network have the same version of Internet Explorer.