Deny external queries to cache

[Alan]

Hi,

I have BIND successfully providing DNS for a few domains and IP's, it
is also cacheing "external" addresses.

The one thing I would like to do is only allow cache access to hosts
on my network, in the "homenet" acl. From what I gather, I need the
following:

allow-query { homenet; };

The only problem is, this goes in a zone, but I don't see any zone in
named.conf related to cacheing. Maybe I'm way off the mark, though.

named.conf: http://81.168.54.13/named/named.conf
other files in /var/named: http://81.168.54.13/named/

Any help would be greatly appreciated :)
Alan