Improve Network Security with DNS Servers
Feb 11, 2010, 21:33 (0 Talkback[s])
(Other stories by David Strom)
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"Using an alternative DNS provider, such as OpenDNS or Google's
Public DNS, can improve performance and increase security. It's
worth taking the time to compare your alternatives.
"The Domain Name System (DNS) is something we all use and depend
on, yet don't really pay much attention to; if you have some time
to investigate alternatives, you could really enhance your
network's performance and security.
"Before I tell you how to do this, let’s have a brief
explanation of what DNS is. Think of what a phone book does; it
allows you to look up someone’s phone number so long as you
know the person’s name. The DNS does something similar for
computers. For example, if you type in “google.com” it
translates that name into a sequence of four numbers, called an IP
address, which functions something like a phone number does. In
this case, google.com’s number is 220.127.116.11."