I did not know about RPZ Here is a good configuration example:

http://jpmens.net/2011/04/26/how-to-configure-your-bind-resolvers-to-lie-using-response-policy-zones-rpz/

IMHO (and I am really nobody) THIS IS WRONG! BAD BAD BAD! Your giving companies 
the ability to selective lie about DNS without the end user knowing it. 
Unfortunately (and I have the heights and greatest respect for Paul) but after 
reading this http://www.isc.org/community/blog/201007/taking-back-dns-0 I can 
only think of one thing. China.

You just handed DNS on a silver platter to oppressive governments and 
corporations.

RBL's were great because they block unsolicited email. They user did not 
request it, but it was sent to their email when it was exposed.

with RPZ, a user makes a request, and being re-directed. Paul, no matter what 
you do, you will never be-able to technologically over come dumb or malicious 
users, especially since 99% of all corporate espionage/hacks are done 
internally, by a user with full access so.... 

We are a small company (so again I apologies for my naivete) but the real 
solutions is well informed users, a good corporate policy, which makes sure 
user are aware of and held accountable for their clicks. 

I mean Imagine if your GPS device took you to a different restaurant cause to 
thought the food was better.

Sorry for getting off topic and ranting, but these are the kinds of techs that 
make the hair on my neck stand up.


Date: Tue, 5 Feb 2013 15:52:51 +0000
Subject: Re: Selective resolution in a corporate environment
From: wongsky.mon...@gmail.com
To: bind-users@lists.isc.org

> From: Phil Mayers p.may...@imperial.ac.uk> To: bind-users@lists.isc.org,
> Date: 05/02/2013 15:44> Subject: Re: Selective resolution in a corporate 
> environment> 

> On 05/02/13 15:36, funky monkey wrote:

> 

> > Could you sandwich that in a forwarding chain - say have a bind

> > 9.<compliant version> in between your normal forwarders to internet, and

> > does it just look fo rthe entries you've specified as either alternate

> > data or does not exist, but otherwise, carries on to forward to an

> > authoritative (or cached, I suppose) version of the domain in question?

> 

> Not entirely sure what you're asking, but I don't see any reason you 

> couldn't use "forwarders { ... };" to point to an RPZ-enabled server, 

> which would be handy to retrofit into bind < 9.8 installations. Sorry, should 
> have probably explained my scenario better... my internal nameservers have a 
> sort of top level (placeholder domain) that are Windows DNS servers, that 
> forward out internet DNS servers for public DNS and anything not resolved 
> internally (by means of either conditional forwarding, or stub zones). All 
> other DNS environments in the organisation (be the BIND or Windows DNS, 
> forward to these 2 "top level" (internal) DNS servers, and only they talk DNS 
> through the firewall to internet DNS.
 So what I meant was for these 2 DNS servers that go on to forward to the 
internet, rather than directly forwarding to the internet, forwarding to one 
(or more) RPZ enabled BIND 9.x servers, which in turn forward on to the 
internet for anything not specified locally. So say I wanted to resolve 
fred.domain.com. from something internal, and only www.domain.dom. was 
specified (kind of as subversion) on these RPZ servers, that not finding a 
match, they would carry on to attempt to resolve fred.domain.com. from the 
authoriative domain.com. nameservers (or the first intermediate DNS server that 
happens to be caching).
 Hope I've asked that in a bit of a clearer manner! Cheers

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