UNIX for Dummies Questions & Answers

dig oralab-scan.oralab.example.com

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.23.rc1.el6_5.1 <<>> oralab-scan.oralab.example.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 17130
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;oralab-scan.oralab.example.com.        IN      A

;; Query time: 2 msec
;; SERVER: 10.0.2.2#53(10.0.2.2)
;; WHEN: Sat Aug 16 10:55:53 2014
;; MSG SIZE  rcvd: 48

[root@grid named]# nslookup oralab-scan.oralab.example.com
Server:         10.0.2.2
Address:        10.0.2.2#53

** server can't find oralab-scan.oralab.example.com.example.com: REFUSED

[root@grid named]# more /etc/named.conf
//
// named.conf
//
// Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
// server as a caching only nameserver (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//

options {
        directory "/var/named";     // Base directory for named
        allow-transfer {"none";};   // Slave serves that can pull zone transfer. Ban everyone by default
        };
zone "2.168.192.IN-ADDR.ARPA." IN { // Reverse zone.
        type master;
        notify no;
        file "192.168.2.db";
};

zone "2.10.10.IN-ADDR.ARPA." IN { // Reverse zone.
        type master;
        notify no;
        file "10.10.2.db";
};

zone "example.com." IN {
        type master;
        notify no;
        file "example.com.db";
};

zone "." IN {
type hint;
file "/dev/null";
};

[root@grid named]# pwd
/var/named
[root@grid named]# cat 192.168.2.db
$TTL 1H
@       IN      SOA     grid  root.example.com.  (
                        2009011201      ; serial (todays date + todays serial #)
                        3H              ; refresh 3 hours
                        1H              ; retry 1 hour
                        1W              ; expire 1 week
                        1D )            ; minimum 24 hour
;
              NS        grid.example.com.
80            PTR       grid.example.com.
90            PTR       oralab-gns.example.com. ; reverse mapping for GNS