ChristianASP.NET

I recently discovered OpenDNS, a free DNS service that has been around for a couple of years.  One of the features of OpenDNS is that it can block unwanted Web sites before they even reach your computer.  In case you're not familiar with DNS (domain name service), here is a simple explanation of how it works:

1. In your Internet browser, you type in a Web site address or click a link to a Web site (i.e. www.google.com).
2. Your computer sends a request to your DNS to "resolve" the name of the Web site to its IP address.
3. The IP address tells your computer where to go to get the Web page you requested.

OpenDNS maintains a catergorized list of web sites.  When a computer configured to use OpenDNS requests an inappropriate web site (intentionally or by accident), the site is effectively blocked before it ever reaches the computer.

Normally your DNS is automatically assigned to you by your Internet service provider (ISP).  However, it's not very difficult to change these settings.  And, if you have a high-speed Internet connection that is shared among multiple computers in your home, chances are you can configure your network router to use OpenDNS and every computer on your network will automatically be protected.  OpenDNS will step you through the process.

By creating an account and registering your computer or network, you can customize which categories of Web sites are blocked.  You can also view activity reports, including a list of Web sites that have been blocked.

OpenDNS can also be used outside of the home.  Many businesses, schools, libraries, and other organizations are using OpenDNS to filter and protect users from inappropriate or harmful Web sites.

OpenDNS is not a total solution for Internet security.  It can only block "known" Web sites, although the OpenDNS community appears to be very active in keeping the service updated.  However, OpenDNS is a very useful service that can go a long way to protect your computers, and more importantly your family, from the dangers of the Internet.