Archive

Posts Tagged ‘DNS’

TCS.com hack exposes difference between Google public DNS and open DNS services

February 7, 2010 8 comments

TCS.com belonging to Tata Consulatcny Services was hacked earlier todaya and it is claimed to be a attack over a DNS loophole.

Using nslookup, the diiference between Google public DNS and open DNS were studied.

On using nslookup for openDNS the result for both tcs.com and http://www.tcs.com were the same.

nslookup for tcs.com and www.tcs.com in open DNS

On using nslookup for Google public DNS the result for both tcs.com and http://www.tcs.com were different.

For http://www.tcs.com the Address was 205.178.152.154 while for tcs.com it was 216.15.200.140.
nslookup for www.tcs.com and tcs.com in Google public DNS

Thanks to Albins for pointing out the difference.

Advertisements
Categories: Hack Tags: , , , ,