Since this post is going to be a little technical, I’m going to start by defining some of the things that will be discussed.
DNS – Short for Domain Name System (or Service or Server), an internet service that translates domain names into IP addresses. Because domain names are alphabetic, such as askbillfirst.com, they’re easier to remember. The Internet however, is really based on IP addresses. Every time you use a domain name, a DNS service must translate the name into the corresponding IP address. For example, the domain name http://www.askbillfirst.com might translate to 22.214.171.124.
Domain Name – A name that identifies one or more IP addresses. For example, the domain name microsoft.com represents about a dozen IP addresses. Domain names are used in URLs to identify particular web pages.
URL – Abbreviation of Uniform Resource Locator, the global address of documents and other resources on the World Wide Web (www).
When you access the internet and type in a URL, the name you entered is sent to servers that translate the letters you typed into the corresponding IP address for that site. Generally, those servers are set by your internet provider. There is no filtering involved with these servers. Therefore, any website that you attempt to go to will pass back to you whatever it has on it, both the good and the bad.
Now, there is a way to set up your computer, or your network router, to protect you from visiting sites that may cause you problems. One company that allows you to filter web content, protects you from phishing sites, and other things is OpenDNS. OpenDNS is used for content filtering. It filters content based on categories of sites, such as gambling, pornography, social networking, humor, and more. These sites may not be malicious, but they could be considered unacceptable types of content. OpenDNS is often used in place of parental control software.
To set this program up you’ll need to modify your network adapter settings. If you use both wired and wireless connections, you’ll need to modify both adapters. If you want to set this up so it protects everyone on your network, you can make the settings in the router and they will filter to everyone on the network.
You can find the instructions for OpenDNS here.
These settings will work on both PC’s and Mac’s whether you set it at the pc level or the router level.
Do not use this in place of a good anti-virus, but use it along with a good anti-virus for an easy way to stay safer on the web.
UPDATE – Laura from OpenDNS informed me that ” OpenDNS actually works as a security filter as well. It protects you from phishing websites, as well as blocking Malware like the Conficker virus. We’re seeing a lot of users — both home and business — choose OpenDNS specifically for the security it provides.” Thank you Laura for that update.
Filed under: PC Security, PC Tips and Tools | 3 Comments »