From: Stefan Bethke (no email)
Date: Tue Nov 06 2007 - 00:37:39 EST
Am 05.11.2007 um 17:16 schrieb Stephane Bortzmeyer:
> 3) Provide DNS recursors which do the mangling *and* block users,
> either by filtering out port 53 or by giving them a RFC 1918 address
> with no NAT for this port.
>
> I've seen 1) and 2) in the wild and I am certain I will see 3) one day
> or the other.
Just recently in NYC, the hotel "internet" connection did intercept
any UDP traffic to *:53, redirecting it to their resolver. Which did
not only serve their own A records for names that should have returned
NXDOMAIN, but also returned "better" answers than you normally would
get (requesting pages from www.weather.com delivered pages from www.accuweather.com
). Of course it even did that after I had paid and clicked through
their walled garden site.
Stefan
-- Stefan Bethke <> Fon +49 170 346 0140
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