On March 8th, the FBI has warned that in order to rid America’s internet infrastructure of the DNSChanger Trojan, they’ll be taking down some DNS servers. Maybe. At least that’s the excuse they’re using. In any case, if it happens, some people may lose internet for a short period of time, but don’t worry, it’ll be back.
So how do you know if you may or may not be affected?
A simple check to see if your computer has the DNSChanger Trojan is very straightforward. Basically, you want to check your DNS connection against those known to be used by the trojan. If you point your browser to dns-ok.us, the website will run a quick check to see if you’re all right.
You can also look up your computer’s DNS and check it against the rogue DNS adresses by using a handy tool developed by the FBI. Once you’ve looked up your DNS, just enter it into the search box on this page, to see if you’re among the infected.
The DNSChanger Working Group provides instructions with images on how to lookup the DNS server you are using:
• On Macs, go to your System Preferences, click Network. When the dialog pops up, click Advanced, then select the DNS tab, where you’ll see a listing of the DNS servers you’re using.
• On a Windows machine you need to open your computer’s DOS command prompt to check your machine. In Windows XP type (without quotes) “ipconfig /allcompartments /all”. In Windows 7, type “ipconfig /all”. The resulting gobbledygook will have a line that reads “DNS Servers” (Windoes 7) or “DNS Settings” (Windows XP).
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