Multihomed problems

[Kevin Darcy]

Dominick Vansevenant wrote:

> Hello
>
> My server is a redhat 6.1 linux, we have a leased line and use the machine
> as mail, web, dns, router with ipchains and ftpserver.
>
> The server is connected to the internet through a leased line and it is
> connected with the intranet. It has 2 ethernetcards and 2 ip addresses.
>
> The problem:
>
> People accessing their mail, web etc. from outside can't access the server,
> I know why but I don't know how to solve it:
>
> when one pings the server (eg www.server.com), it returns the full name of
> the server callisto.server.com, but it after that tries to ping the IP adres
> of the machine that is connected to the intranet. I conclude that the
> machine returns the good name but does not return the IP adres connected to
> the internet, but returns the adres connected to the intranet. The DNS
> listens on port 53 of BOTH ip-addresses !!!

You can have separate instances of named, with separate "internal" versus
"external" versions of your zone data, listening on different interfaces, using
the "listen-on" directive. That's probably the most straightforward solution to
your problem.


- Kevin