BIND 9.2.1 - experiments on stubs and listen-to

Joseph S D Yao jsdy at
Fri Dec 13 23:02:50 UTC 2002

On Thu, Dec 12, 2002 at 02:44:22PM +1100, Mark_Andrews at wrote:
> > First experiment:  Can a single view run "listen-on"ing only one of
> > multiple Ethernet interfaces?
> 	Yes.
> 	Use match-destination to select the traffic for the view.
> 	listen-on must include the interface.

Thanks for your comment!

I wasn't clear what I was trying to do.

I was hoping for a single generic configuration to give to people on
our network who just lost the company lottery and now they have to
manage the firewall [;-(], as well as folks who have a better idea what
they are doing.  The former are much happier, the less complex one can
express things to them.

I was hoping that I could do something inside the view{} to force the
'named' to only listen on the one interface (or the internal + DMZ
interfaces).  Thus, all those people from the public Internet who keep
showing up on my monitors doing DNS queries would not be able to
connect, much less query.  I had hoped to avoid the "complexity" of
having to make changes in two different places.

I finally realized that I need to give the firewall admins the
listen-on{} in the external-to-all-views options{} statement, and tell
them to ONLY include the internal interface's IP address.  I also have
hooks for those who know what they are doing to give an external view
as well, after including the external interface's IP address in the
listen-on{}.  There is an inescapable amount of complexity.

Thanks again!

Joe Yao				jsdy at - Joseph S. D. Yao
OSIS Center Systems Support					EMT-B
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