How to defend against toxic DNS attacks within 30 seconds

Domain Name SystemA new vulnerability found in Domain Name System may expose millions of computer users to DNS attacks, however, we provide a simple and quick way to increase the system's defense against such attacks within 30 seconds.

Hackers can exploit the DNS vulnerability to poison the DNS server cache and replace valid Internet addresses with toxic addresses. when you enter a bank name or other website addresses, it will be routed to your website with unknown frauds.

Large Internet service providers are working to fix their DNS Server Vulnerabilities. Some companies have said they have completed the repairs, such as Comcast and Verizon. AT&T is also working to fix their servers. However, DNS servers in many other places have not fixed the vulnerability and are vulnerable to attacks. When you access the Internet in a hotspot, you cannot determine whether the DNS server of the hotspot is fixed. That is to say, it is more vulnerable to attacks.

So how can we protect ourselves from attacks? In fact, it is very easy to use the free OpenDNS service to replace the original default DNS server. This service has fixed vulnerabilities and is very secure. Using this free service can protect user security. In addition, you will find that this service has many other advantages.

With the OpenDNS server, you can first configure your computer. in Windows XP, choose Control Panel> network and Internet connection> network connection, right-click the network connection in the network connection window, select properties. A dialog box is displayed, as shown in.

Scroll to the bottom Internet Protocol (TCP/IP) in the list, click Properties, and select "Use the following DNS server address" at the bottom of the dialog box ", enter the following address on the preferred DNS server: 208.67.222.222, and enter the address 208.67.220.220 on the backup DNS server, as shown in. Click "OK" and click "close" to restart the computer for the settings to take effect.

For Vista users, choose Control Panel> network and Internet> network and sharing center. Click View status link on the right of the screen. The local link status box shown in is displayed, and click Properties.

The dialog box similar to the one in XP will pop up to allow you to use OpenDNS, perform the same operation according to the operation method in XP, and then you can.

Of course, this only protects personal computers. If you use a home router, you can configure it to allow all computers on the network to use OpenDNS.

If you are running a company network and want to set up OpenDNS, it is best to go to The OpenDNS Q & A page to understand: http://www.opendns.com/faq /.