Tor and DNS attacks

Sven Anderson sven at anderson.de
Thu Nov 13 19:37:58 UTC 2008


Hi,

I just wondered if Tor might be vulnerable to DNS attacks during the  
bootstrapping phase? Is there a public key of a directory server  
included in all the Tor download packages to secure the initial  
contact to the directory servers?

I also want to emphasize again that everybody, but especially Tor node  
operators, should check that he/she is not vulnerable to DNS cache  
poisoning, for example by visiting this website:
http://member.dnsstuff.com/tools/vu800113.php
or by querying the TXT record of the domain porttest.dns-oarc.net with  
a command like 'host -t TXT porttest.dns-oarc.net'.


Sven

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