nanog mailing list archives

Re: Open Resolver Problems


From: Chris Adams <cmadams () hiwaay net>
Date: Tue, 26 Mar 2013 07:59:44 -0500

Once upon a time, Valdis.Kletnieks () vt edu <Valdis.Kletnieks () vt edu> said:
Now explain how you find a recursive nameserver that isn't listed in an NS
entry and *hasn't* been publicized someplace that Google can find it.

The same way you find open mail relays, SSH hosts with weak
user/password combos, bad WordPress installs, etc. - scan for them.  If
it is open to the Internet, it will be found (or probably already has
been).

-- 
Chris Adams <cmadams () hiwaay net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.


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