options
{
    query-source    port 53;   
    directory "/var/named";
    dump-file         "data/cache_dump.db";
    statistics-file     "data/named_stats.txt";
    memstatistics-file     "data/named_mem_stats.txt";
    listen-on { 192.168.2.10; 127.0.0.1; };
};

logging
{
        channel default_debug {
                file "data/named.run";
                severity dynamic;
        };   
};

view "internal"
{
    match-clients        { localnets; };
    match-destinations    { localnets; };
    recursion yes;

    zone "training.com" {
        type master;
        notify yes;
        allow-query { any; };
        file "data/training.com.db";
    };

    zone "2.168.192.in-addr.arpa" {
        type master;
        notify yes;
        allow-query { any; };
        file "data/2.168.192.zone.db";
        };
   
    zone "." {
    type hint;
    file "data/named.ca";
    };
};

training.com.db
$TTL    86400
@       IN      SOA     masterdns.training.com root.training.com. ( 
                        2009111914 ; Serial number needs to be increase when zone changes
                        28800      ; Refresh
                        14400      ; Retry
                        3600000    ; Expire
                        86400 )    ; Minimum
                IN       NS  masterdns.training.com.
                IN       A   192.168.2.10 ; 
masterdns       IN       A   192.168.2.10 ; 
secondarydns    IN       A   192.168.2.11 ;
www             IN       A   192.168.2.10 ; 

2.168.192.zone.db
$TTL    86400
@       IN      SOA     masterdns.training.com root.training.com.  (
                                      2009111914 ; Serial
                                      28800      ; Refresh
                                      14400      ; Retry
                                      3600000    ; Expire
                                      86400 )    ; Minimum
          IN    NS    masterdns.training.com.
10        IN    PTR   training.com. ;
10        IN    PTR   masterdns ;
11        IN    PTR   secondarydns ;

zone "training.com" {
        type slave;
        notify yes;
        allow-query { any; };
        file "data/sec.training.com.db";
        masters { 192.168.2.10; };
    };

    zone "2.168.192.in-addr.arpa" {
        type slave;
        notify yes;
        allow-query { any; };
        file "data/sec.2.168.192.zone.db";
        masters { 192.168.2.10; };