Vulnerability Development mailing list archives

Re: DNS zone transfer


From: "Deus, Attonbitus" <Thor () HammerofGod com>
Date: Mon, 10 Jun 2002 10:59:22 -0700


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At 07:02 AM 6/10/2002, Ed Schmollinger wrote:

      They can't filter port 53/tcp if the are authoritative for any 
domains.
Support for TCP queries is not optional.

No, they can't filter port 53/tcp if they expect zone transfers or large
responses to work.

Or any DNS query from an Exchange2000 box- IIRC, Ex2k uses TCP 53 for *all* 
DNS queries regardless of size.

AD



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