internal DNS in vpn

Hello,
my name is Borat
Does anyone know, how to setup DNS (bind9) in such way...
I want DNS in my intranet, to resolve names of local machines with
internal IP's, but also I need to have external dns which is holding my
domain.
Now I've got one dns server for outside questions about my external
servers and other zone with my inside machines included (internal IP's).
But the problem is, that if i `host inside_name.domain.com` i can see in
return from ouside of the world my internal IP... It's not safe, so I
wander how to fix that.
I also have 3 vpn connected with 3 diffrient domains, how to setup dns
to be able to see machines from different domains ? Is it possible to
assign one dns to hold whole 3 domains or maybe to is there a way to
make them work with each other...
regards,
borat

Piotr wrote:
> Hello,
> my name is Borat
> Does anyone know, how to setup DNS (bind9) in such way...
> I want DNS in my intranet, to resolve names of local machines with
> internal IP's, but also I need to have external dns which is holding my
> domain.
> Now I've got one dns server for outside questions about my external
> servers and other zone with my inside machines included (internal IP's).
> But the problem is, that if i `host inside_name.domain.com` i can see in
> return from ouside of the world my internal IP... It's not safe, so I
> wander how to fix that.
> I also have 3 vpn connected with 3 diffrient domains, how to setup dns
> to be able to see machines from different domains ? Is it possible to
> assign one dns to hold whole 3 domains or maybe to is there a way to
> make them work with each other...
> regards,
> borat
>

You need to make the DNS for the internal machines definitive for
the internal domains. If the several domains/vpn's require different
behavior each will have to have it's own internal DNS with the
appropriate domains as definitive.