//

// Sample named.conf BIND DNS server 'named' configuration file

// for the Red Hat BIND distribution.

//

// See the BIND Administrator's Reference Manual (ARM) for details, in:

//   file:///usr/share/doc/bind-*/arm/Bv9ARM.html

// Also see the BIND Configuration GUI : /usr/bin/system-config-bind and 

// its manual.

//

options

{

	/* make named use port 53 for the source of all queries, to allow

         * firewalls to block all ports except 53:

         */

	query-source    port 53;	

	query-source-v6 port 53;

	// Put files that named is allowed to write in the data/ directory:

	directory "/var/named"; // the default

	dump-file 		"data/cache_dump.db";

        statistics-file 	"data/named_stats.txt";

        memstatistics-file 	"data/named_mem_stats.txt";

};

logging 

{

/*      If you want to enable debugging, eg. using the 'rndc trace' command,

 *      named will try to write the 'named.run' file in the $directory (/var/named).

 *      By default, SELinux policy does not allow named to modify the /var/named directory,

 *      so put the default debug log file in data/ :

 */

        channel default_debug {

                file "data/named.run";

                severity dynamic;

        };	

};

//

// All BIND 9 zones are in a "view", which allow different zones to be served

// to different types of client addresses, and for options to be set for groups

// of zones.

//

// By default, if named.conf contains no "view" clauses, all zones are in the 

// "default" view, which matches all clients.

// 

// If named.conf contains any "view" clause, then all zones MUST be in a view; 

// so it is recommended to start off using views to avoid having to restructure

// your configuration files in the future.

//

view "localhost_resolver"

{

/* This view sets up named to be a localhost resolver ( caching only nameserver ).

 * If all you want is a caching-only nameserver, then you need only define this view:

 */

	match-clients 		{ localhost; };

	match-destinations	{ localhost; };

	recursion yes;

	# all views must contain the root hints zone:

	include "/etc/named.root.hints";

        /* these are zones that contain definitions for all the localhost

         * names and addresses, as recommended in RFC1912 - these names should

	 * ONLY be served to localhost clients:

	 */

	include "/etc/named.rfc1912.zones";

};

view "internal"

{

/* This view will contain zones you want to serve only to "internal" clients

   that connect via your directly attached LAN interfaces - "localnets" .

 */

	match-clients		{ localnets; };

	match-destinations	{ localnets; };

	recursion yes;

	// all views must contain the root hints zone:

	include "/etc/named.root.hints";

        // include "named.rfc1912.zones";

	// you should not serve your rfc1912 names to non-localhost clients.

	// These are your "authoritative" internal zones, and would probably

	// also be included in the "localhost_resolver" view above :

	zone "my.internal.zone" { 

		type master;

		file "my.internal.zone.db";

	};

	zone "my.slave.internal.zone" {

		type slave;

		file "slaves/my.slave.internal.zone.db";

		masters { /* put master nameserver IPs here */ 127.0.0.1; } ;

		// put slave zones in the slaves/ directory so named can update them

	};	

	zone "my.ddns.internal.zone" {

		type master;

		allow-update { key ddns_key; };

		file "slaves/my.ddns.internal.zone.db";

		// put dynamically updateable zones in the slaves/ directory so named can update them

	};			

};

key ddns_key

{

	algorithm hmac-md5;

	secret "use /usr/sbin/dns-keygen to generate TSIG keys";

};

view    "external"

{

/* This view will contain zones you want to serve only to "external" clients

 * that have addresses that are not on your directly attached LAN interface subnets:

 */

	match-clients		{ !localnets; !localhost; };

	match-destinations	{ !localnets; !localhost; };

	recursion no;

	// you'd probably want to deny recursion to external clients, so you don't

        // end up providing free DNS service to all takers

	// all views must contain the root hints zone:

	include "/etc/named.root.hints";

	// These are your "authoritative" external zones, and would probably

        // contain entries for just your web and mail servers:

	zone "my.external.zone" { 

		type master;

		file "my.external.zone.db";

	};

};