On Fri, Oct 17, 2014 at 6:49 PM, James Hogarth <james.hogarth@xxxxxxxxx>
wrote:
> On 17 Oct 2014 23:32, "Boris Epstein" <borepstein@xxxxxxxxx> wrote:
> >
> > Hello all,
> >
> > I am trying to get djbdns ( http://en.wikipedia.org/wiki/Djbdns )
> running
> > on CentOS 7. So far I have wirtten the djbdns.service and djbdns.socket
> > files. The sockets (TCP and UDP 53) for some reason would not start and I
> > don't know how to debug that;
>
> I was under the impression it used daemontools and listened directly on the
> ports rather than an inetd style behaviour of being triggered and having
> the connection handed to it like socket based behaviour would require... It
> seems unlikely you'd need a socket unit.
>
> > the service does start but only when I start
> > it manually by running
> >
> > systemctl start djbdns
> >
>
> This strongly indicates you don't need the socket as socket based services
> are not stated by calling start on their service file.
>
> You will need to add a wantedby multi-user.target to the [install] part of
> that service file and then call systemctl enable djbdns
>
> > So, I am a real noob when it comes to systemd, hence any advice on how to
> > proceed will be much appreciated.
> >
>
> I'd ask why you want to use djbdns rather than the DNS server provided by
> the CentOS distribution. If security is your concern then SELinux confined
> bind (in a chroot as well if you like) is supported directly by the
> distribution packages so you can be sure of updates and this list plus the
> IRC channel can support that - unlike your custom compiled djbdns.
>
> If you wanted to be extremely paranoid you could configure the systemd unit
> for BIND to hide all but a select number of directories too... Which is
> technically more powerful than the chroot as it makes use of kernel
> namespaces.
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>
James,
Good points.
sshd is not a telnetd-type servide yet it uses a .socket file. So I thought
djbdns should as well.
As for why DJBDNS - we have used it for a long time due to the security
advantages. And yes, BIND is now much better than it used to be and we may
switch to it at some point but for now we are still trying to get DJBDNS to
work.
I am close - when I start it manually and when I use it locally. So all I
need to do is figure out how to start it automatically as well as how to
open the necessary ports in the firewall.
Thanks.
Boris.
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