Blocking reverse lookup queries for private ips

[Juan Bernhard]

El 22/11/2016 a las 07:40 a.m., Sachin Patil escribió:
> Hello All,
>
> I want to forward reverse dns lookup queries for private ips to 
> forwarders on my bind server.
>
>
> I have searched on internet and found I can have mapping to my private 
> ips in ptr db records but I don't want this.
>
> I want to return nxdomain for any private ip reverse lookup.
>
>
> Can I do this using configurations?
>
> Please guide.
>
>
> Sachin

I think that you need a split dns. You will have a public dns database 
and a private one (all in the same bind, you dont need 2 diferent 
servers or instances of bind, check "view" in the manual). You can also 
give a unique name for server who has privates IP, but a mapped public 
IP. The "inner" dns will respond with the private ip, and the public one 
with the mapped ip address/.
/Its a bit more complicated, but is the best way to approach this problem.

Hope this helps.

Saludos, Juan.
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