Re: Hey, SiteFinder is back, again...

["Steven M. Bellovin" <smb () cs columbia edu>]

On Mon, 5 Nov 2007 11:17:29 -0800
David Conrad <drc () virtualized org> wrote:

> On Nov 5, 2007, at 8:23 AM, David Lesher wrote:
> > What affect will Allegedly Secure DNS have on such provider
> > hijackings, both of DNS and crammed-in content?
>
> If what Verizon is doing is rewriting NXDOMAIN at their caching
> servers, DNSSEC will _not_ help.  Caching servers do the validation
> and the insertion of the search engine IP addresses in the response
> would occur after the validation.
Depends on whether or not the endpoints delegate DNSSEC validation to
Verizon.  They don't have to.


                --Steve Bellovin, http://www.cs.columbia.edu/~smb