local dns problem

[David G. Miller]

Gene Heskett <gene.heskett at verizon.net> wrote: 

> Greetings; My local home network runs with most of its machines having 
> fixed addresses, referenced in their host files. But I do have a dhcp 
> server setup for when ever my lappy is powered up and logs in thru a 
> wap11 from its builtin broadcom radio. How can I rig my dns lookups so 
> that I can still ssh into this lappy by its name, diablo.coyote.den 
> when its given a dynamic address by dhcpd? As it is, I have to goto 
> the lappy and run an ifconfig to find its address and ssh to that. 
> Cumbersome. 

You'll need to allow DNS updates from your local network (not the 
world).  You do this by allowing updates in named.conf only from 
"trusted" subnets.  On my server this looks like:

...
zone "local.davenjudy.org" IN {
        type master;
        file "local.davenjudy.org";
        allow-query {
                trusted;
        };
        allow-update {
                trusted;
        };
};
...

I also remember having to "play with" the permissions and ownership for 
the forward and reverse zone files for my local network in order for 
this to work.  If you need a full example of named.conf, let me know by 
private e-mail.

Cheers,
Dave

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