How to filter adult content at home/office – An easy way

My friend called me asking a solution for the above question. He runs a small medical transcription company. When transcriptionists are busy with searching medical terminology, there is a chance for accidentally going to the sites with adult content. He also wants to restrict the net use for the night shift people. He don’t want to spend money buying the content filtering software and it must be easy to setup because they don’t have system administrators to do that. Everything related to systems is taken care of by themselves.

So, I have started searching the net and found these easy steps to stop the adult content showing up in browsers. It is basically about changing the DNS servers in your system.

What is DNS?
DNS (Domain Name System) is a process that translates easy to remember addresses (like www.scrubit.com) to a numerical IP address used by computers (67.138.54.99) Everyone uses DNS. Most DNS is provided to the user by your internet service provider, or a recursive DNS service like ScrubIT. More info you can read on Wikipedia here.

Here I explain about two services OpenDNS and ScrubIt.

OpenDNS: It offers more free services than ScrubIt and more it is faster than ScrubIt. But, adult content filtering is not turned on by default. You have to create a free account on OpenDNS to turn it on. It will give you access to a number of interesting features like Adult Site Blocking, Phishing Site Blocking, Phishing Site Blocking, Stats and Logs, Typo Corrections, etc. Change your DNS servers to 208.67.222.222 & 208.67.220.220, create a free account on OpenDNS, add your IP address, and turn the adult site blocking on. Now you are free from adult sites.

Note that this works only with static IPs as your free account is linked to the IP to gain the control. Lot of broadband accounts comes with static IP and if your internet provider does not support static IP, you can download the Dynamic DNS client to update your IP address automatically. More information is here: http://www.opendns.com/support/dynamic_ip/

Below are some screenshots. It is totally free, so give it a try to learn more about OpenDNS.

ScrubIt: Just change the DNS servers to 67.138.54.100 & 207.225.209.66, and it starts working. Though it is somewhat slow compared to OpenDNS, there is no hassle of setting up anything. Takes few seconds and efficiently starts blocking adult content.

Go to the ScrubIt’s website to know more.

Screenshot:

Finally, how to change the DNS servers in your system? Do the following:

Right click on the network connection icon displayed in the notification area on the taskbar. A menu will appear and select “Status” from the list

Click the “Properties” button and a properties window will open.

Then click “Internet Protocol (TCP/IP) ” and it will open up a window with DNS servers list.

You can also locate the local area connection from control panel