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Filename : named.conf
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/*
 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-{version}/arm/Bv9ARM.html
 Also see the BIND Configuration GUI : /usr/bin/system-config-bind and 
 its manual.
*/

options
{
	// Put files that named is allowed to write in the data/ directory:
	directory 		"/var/named";		// "Working" directory
	dump-file 		"data/cache_dump.db";
        statistics-file 	"data/named_stats.txt";
        memstatistics-file 	"data/named_mem_stats.txt";
	secroots-file		"data/named.secroots";
	recursing-file		"data/named.recursing";


	/*
	  Specify listenning interfaces. You can use list of addresses (';' is
	  delimiter) or keywords "any"/"none"
	*/
	//listen-on port 53	{ any; };
	listen-on port 53	{ 127.0.0.1; };

	//listen-on-v6 port 53	{ any; };
	listen-on-v6 port 53	{ ::1; };

	/*
	  Access restrictions

	  There are two important options:
	    allow-query { argument; };
	      - allow queries for authoritative data

	    allow-query-cache { argument; };
	      - allow queries for non-authoritative data (mostly cached data)

	  You can use address, network address or keywords "any"/"localhost"/"none" as argument
	  Examples:
	    allow-query { localhost; 10.0.0.1; 192.168.1.0/8; };
	    allow-query-cache { ::1; fe80::5c63:a8ff:fe2f:4526; 10.0.0.1; };
	*/

	allow-query		{ localhost; };
	allow-query-cache	{ localhost; };

	/* Enable/disable recursion - recursion yes/no;

	 - If you are building an AUTHORITATIVE DNS server, do NOT enable recursion.
	 - If you are building a RECURSIVE (caching) DNS server, you need to enable 
	   recursion. 
	 - If your recursive DNS server has a public IP address, you MUST enable access 
	   control to limit queries to your legitimate users. Failing to do so will
	   cause your server to become part of large scale DNS amplification 
	   attacks. Implementing BCP38 within your network would greatly
	   reduce such attack surface 
	 */
	recursion yes;

	/* DNSSEC related options. See information about keys ("Trusted keys", bellow) */

	/* Enable DNSSEC validation on recursive servers */
	dnssec-validation yes;

	/* In Fedora we use /run/named instead of default /var/run/named
	   so we have to configure paths properly. */
	pid-file "/run/named/named.pid";
	session-keyfile "/run/named/session.key";

	managed-keys-directory "/var/named/dynamic";

    /* In Fedora we use system-wide Crypto Policy */
    /* https://fedoraproject.org/wiki/Changes/CryptoPolicy */
    include "/etc/crypto-policies/back-ends/bind.config";
};

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;
        };
};

/*
 Views let a name server answer a DNS query differently depending on who is asking.

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

 Views are processed sequentially. The first match is used so the last view should
 match "any" - it's fallback and the most restricted view.

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

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; };
	recursion yes;

	# all views must contain the root hints zone:
	zone "." IN {
	        type hint;
	        file "/var/named/named.ca";
	};

        /* these are zones that contain definitions for all the localhost
         * names and addresses, as recommended in RFC1912 - these names should
	 * not leak to the other nameservers:
	 */
	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; };
	recursion yes;

	zone "." IN {
	        type hint;
	        file "/var/named/named.ca";
	};

        /* these are zones that contain definitions for all the localhost
         * names and addresses, as recommended in RFC1912 - these names should
	 * not leak to the other nameservers:
	 */
	include "/etc/named.rfc1912.zones";

	// These are your "authoritative" internal zones, and would probably
	// also be included in the "localhost_resolver" view above :

	/*
	  NOTE for dynamic DNS zones and secondary zones:

	  DO NOT USE SAME FILES IN MULTIPLE VIEWS!

	  If you are using views and DDNS/secondary zones it is strongly
	  recommended to read FAQ on ISC site (www.isc.org), section
	  "Configuration and Setup Questions", questions
	  "How do I share a dynamic zone between multiple views?" and
	  "How can I make a server a slave for both an internal and an external
	   view at the same time?"
	*/

	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 "dynamic/my.ddns.internal.zone.db";
		// put dynamically updateable zones in the slaves/ directory so named can update them
	};
};

key ddns_key
{
	algorithm hmac-sha256;
	secret "use /usr/sbin/ddns-confgen 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 match any above view:
 */
	match-clients		{ any; };

	zone "." IN {
	        type hint;
	        file "/var/named/named.ca";
	};

	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

	// 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";
	};
};

/* Trusted keys

  This statement contains DNSSEC keys. If you want DNSSEC aware resolver you
  should configure at least one trusted key.

  Note that no key written below is valid. Especially root key because root zone
  is not signed yet.
*/
/*
trust-anchors {
// Root Key
. initial-key 257 3 8 "AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3
		      +/4RgWOq7HrxRixHlFlExOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kv
		      ArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgCmr3EgVLrjyBxWezF
		      0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+e
		      oZG+SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfd
		      RUfhHdY6+cn8HFRm+2hM8AnXGXws9555KrUB5qihylGa8subX2Nn6UwN
		      R1AkUTV74bU=";

// Key for forward zone
example.com. static-key 257 3 8 "AwEAAZ0aqu1rJ6orJynrRfNpPmayJZoAx9Ic2/Rl9VQW
				LMHyjxxem3VUSoNUIFXERQbj0A9Ogp0zDM9YIccKLRd6
				LmWiDCt7UJQxVdD+heb5Ec4qlqGmyX9MDabkvX2NvMws
				UecbYBq8oXeTT9LRmCUt9KUt/WOi6DKECxoG/bWTykrX
				yBR8elD+SQY43OAVjlWrVltHxgp4/rhBCvRbmdflunaP
				Igu27eE2U4myDSLT8a4A0rB5uHG4PkOa9dIRs9y00M2m
				Wf4lyPee7vi5few2dbayHXmieGcaAHrx76NGAABeY393
				xjlmDNcUkF1gpNWUla4fWZbbaYQzA93mLdrng+M=";


// Key for reverse zone.
2.0.192.IN-ADDRPA.NET. initial-ds 31406 8 2 "F78CF3344F72137235098ECBBD08947C2C9001C7F6A085A17F518B5D8F6B916D";
};
*/