[nSLUG] EastLink hijacking DNS

Eri Ramos Bastos bastos.eri at gmail.com
Sat Oct 31 11:59:13 ADT 2009


Just type http://www.thisurldoesnotexistsforsure.com/ in your address bar.

You should get an "Address not found" error at Firefox. If you get a
search page (usually branded with your telco's logo) then they are
hijacking your DNS.

Also you can use nslookup or the host command to try to resolve a
non-existent hostname. It should return something like this:

$ host imsurethisonedoesnotexistsaswell.org
Host imsurethisonedoesnotexistsaswell.org not found: 3(NXDOMAIN)

If you get an IP address instead, they are hijacking.

Regards,
Eri Ramos Bastos


> But how would I check for DNS hijacking for sure?



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