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What Technic does opendns use ?
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You use their dns services. It requires the least effort on your side to filter websites. You sign up, configure some categories to filter, and then point your dns settings to their servers. Whenever anyone types in for example sex.com in their browser, opendns will return their own ip, meaning it will show a &quot;this page is blocked&quot; page. And all the while, you didn't pay for anything, and you didn't have to install software on all pc's.
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You use their dns services. It requires the least effort on your side to filter websites. You sign up, configure some categories to filter, and then point your dns settings to their servers. Whenever anyone types in for example sex.com in their browser, opendns will return their own ip, meaning it will show a "this page is blocked" page. And all the while, you didn't pay for anything, and you didn't have to install software on all pc's.

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OpenDNS is working perfectly.
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I am serving a elementary school and they want me to put web-filter on the network connection to restrict access to porno and thelike.<br />
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I have been using proxy server who bans certain words but he is also blocking some service we need.<br />
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Our router is Windows 2003 server and I am looking for software to put on him to filter the webaccess.
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I am serving a elementary school and they want me to put web-filter on the network connection to restrict access to porno and thelike.

I have been using proxy server who bans certain words but he is also blocking some service we need.

Our router is Windows 2003 server and I am looking for software to put on him to filter the webaccess.

Webfilter

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

Windows Server 2003

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.