Wednesday, July 08, 2009

Follow up testing results with OpenDNS

After posting about OpenDNS I figure I try this out at home to test. So far after using it for a few days, I have not seen any slowness or change of Internet speeds. Using a custom filter, I blocked the usual sites any business would block, pornography, plus other sites like proxy bypass sites (these allow users to bypass OpenDNS's filtering).

Using Google I made a search for "proxy bypass" and just clicking the first result received a OpenDNS message window that the site in question has been blocked. A nice feature is each site blocked brings up a "contact your admin for questions" window. If a user is indeed using the site for business use, they can send a e-mail message and this will be directly sent to the registered e-mail address. From here you are given a choice as the admin, either continue blocking the site (no action needed) or "white list" the site, by unblocking it.

Overall it works but there are some slight issues. First is the filtering is connected to your IP address. For some ISP's they do not issue a static IP address but a dynamic IP address. Blocking these addresses is more difficult but not impossible, normally your router should not acquire a new IP address frequently so the filtering will still work. OpenDNS also features a nice tool that allows a computer in the network to update OpenDNS with a change in the dynamic address. This is important because if OpenDNS is not updated with the new IP address, the filtering will no longer work.

Overall I am giving a high recommendation for OpenDNS at home or work, anywhere you want to filter Internet access. It's great for parents who can't watch their kids all of the time on the Internet but still want some on-line safety. Important to say the best method of protection for kids is basic supervision and not leaving them alone with the computer.

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