[SOLVED] Ubuntu bind9 dns problem

Takeshi_F · 10-19-2012, 01:52 PM

Hi, I'm trying to setup a DNS on my linux ubuntu 11.10

So here are the things that i've done:

First I changed the /etc/network/interfaces file:

Code:

auto eth0
iface eth0 inet static
address 192.168.56.20
netmask 255.255.255.0
network	192.168.56.0
broadcast 192.168.56.255
gateway 192.168.56.1
auto lo
iface lo inet loopback

Then I changed the /etc/resolvconf/resolv.conf.d/base file with

Code:

nameserver 192.168.56.20
nameserver 192.168.56.10

I installed bind9 and edited the /etc/bind/named.conf.local file

Code:

//
// Do any local configuration here
//

// Consider adding the 1918 zones here, if they are not used in your
// organization
//include "/etc/bind/zones.rfc1918";

zone "lintest.be"{
        type master;
        file "/etc/bind/zones/lintest.be.db";
}

Then I changed /etc/bind/named.conf.options because I got a DNS server on Windows Server 2008 aswell (both Linux & Windows server are running in VirtualBox on a host-only network)

Code:

options {
        directory "/var/cache/bind";

        // If there is a firewall between you and nameservers you want
        // to talk to, you may need to fix the firewall to allow multiple
        // ports to talk.  See http://www.kb.cert.org/vuls/id/800113

        // If your ISP provided one or more IP addresses for stable
        // nameservers, you probably want to use them as forwarders.
        // Uncomment the following block, and insert the addresses replacing
        // the all-0's placeholder.

recursion yes;

        forwarders {
                192.168.56.10;
        };

        auth-nxdomain no;    # conform to RFC1035
        listen-on-v6 { any; };
};

In the /etc/bind/zones/lintest.be.db file:

Code:

$TTL 3D
@ IN SOA ns.mydomain.be. admin.mydomain.be. (
   2007062001
   28800
   3600
   604800
   38400
);
lintest.be.  IN      NS         ns.lintest.be.
mail     IN    CNAME  www
www             IN      A          192.168.56.10

When I want to lookup the dns server with nslookup mail.lintest.be I get this:

Code:

;; Got SERVFAIL reply from 192.168.56.20, trying next server
;; Got SERVFAIL reply from 127.0.0.1, trying next server

Does somebody know the problem?

bathory · 10-19-2012, 03:12 PM

Quote:

;; Got SERVFAIL reply from 192.168.56.20, trying next server
;; Got SERVFAIL reply from 127.0.0.1, trying next server

You don't have an A RR for ns.lintest.be. Add

Code:

ns.lintest.be. IN A 192.168.56.20

in the zone file, increase the serial and restart bind.

BTW if you get the above output from nslookup, it means that you have 127.0.0.1 as 2nd nameserver in resolv.conf

Cheers

Takeshi_F · 10-20-2012, 07:17 AM

Quote:

Originally Posted by bathory

You don't have an A RR for ns.lintest.be. Add

Code:

ns.lintest.be. IN A 192.168.56.20

in the zone file, increase the serial and restart bind.

BTW if you get the above output from nslookup, it means that you have 127.0.0.1 as 2nd nameserver in resolv.conf

Cheers

Thanks, that solved my problem. nslookup works now, but if I want to surf to mail.lintest.be on my Windows Server 2008 browser then it can't connect ( if I surf to mail.wintest.be on linux it works )... Any idea?

bathory · 10-20-2012, 12:06 PM

Quote:

if I want to surf to mail.lintest.be on my Windows Server 2008 browser then it can't connect ( if I surf to mail.wintest.be on linux it works )... Any idea?

You must tell windows to use the same nameserver (192.168.56.20) as your linux box.

Takeshi_F · 10-20-2012, 01:25 PM

Quote:

Originally Posted by bathory

You must tell windows to use the same nameserver (192.168.56.20) as your linux box.

Ah, thats what I've forgotten, thanks!