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📄 named.conf(8.16 KB)
📄 named.rfc1912.zones(931 B)

Editing: named.conf

/*
 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 about the
 configuration located in /usr/share/doc/bind-{version}/Bv9ARM.html
*/

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";
	recursing-file		"data/named.recursing";
	secroots-file		"data/named.secroots";

/*
	  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 serving of DNSSEC related data - enable on both authoritative
 	   and recursive servers DNSSEC aware servers */
	dnssec-enable yes;

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

/* In RHEL-7 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";
};

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-md5;
	secret "use /usr/sbin/dnssec-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 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
  have to configure at least one trusted key.

Note that no key written below is valid. Especially root key because root zone
  is not signed yet.
*/
/*
trusted-keys {
// Root Key
"." 257 3 3 "BNY4wrWM1nCfJ+CXd0rVXyYmobt7sEEfK3clRbGaTwSJxrGkxJWoZu6I7PzJu/
             E9gx4UC1zGAHlXKdE4zYIpRhaBKnvcC2U9mZhkdUpd1Vso/HAdjNe8LmMlnzY3
             zy2Xy4klWOADTPzSv9eamj8V18PHGjBLaVtYvk/ln5ZApjYghf+6fElrmLkdaz
             MQ2OCnACR817DF4BBa7UR/beDHyp5iWTXWSi6XmoJLbG9Scqc7l70KDqlvXR3M
             /lUUVRbkeg1IPJSidmK3ZyCllh4XSKbje/45SKucHgnwU5jefMtq66gKodQj+M
             iA21AfUVe7u99WzTLzY3qlxDhxYQQ20FQ97S+LKUTpQcq27R7AT3/V5hRQxScI
             Nqwcz4jYqZD2fQdgxbcDTClU0CRBdiieyLMNzXG3";

// Key for forward zone
example.com. 257 3 5 "AwEAAaxPMcR2x0HbQV4WeZB6oEDX+r0QM65KbhTjrW1ZaARmPhEZZe
                      3Y9ifgEuq7vZ/zGZUdEGNWy+JZzus0lUptwgjGwhUS1558Hb4JKUbb
                      OTcM8pwXlj0EiX3oDFVmjHO444gLkBO UKUf/mC7HvfwYH/Be22GnC
                      lrinKJp1Og4ywzO9WglMk7jbfW33gUKvirTHr25GL7STQUzBb5Usxt
                      8lgnyTUHs1t3JwCY5hKZ6CqFxmAVZP20igTixin/1LcrgX/KMEGd/b
                      iuvF4qJCyduieHukuY3H4XMAcR+xia2 nIUPvm/oyWR8BW/hWdzOvn
                      SCThlHf3xiYleDbt/o1OTQ09A0=";

// Key for reverse zone.
2.0.192.IN-ADDRPA.NET. 257 3 5 "AQOnS4xn/IgOUpBPJ3bogzwcxOdNax071L18QqZnQQQA
                                VVr+iLhGTnNGp3HoWQLUIzKrJVZ3zggy3WwNT6kZo6c0
                                tszYqbtvchmgQC8CzKojM/W16i6MG/ea fGU3siaOdS0
                                yOI6BgPsw+YZdzlYMaIJGf4M4dyoKIhzdZyQ2bYQrjyQ
                                4LB0lC7aOnsMyYKHHYeRv PxjIQXmdqgOJGq+vsevG06
                                zW+1xgYJh9rCIfnm1GX/KMgxLPG2vXTD/RnLX+D3T3UL
                                7HJYHJhAZD5L59VvjSPsZJHeDCUyWYrvPZesZDIRvhDD
                                52SKvbheeTJUm6EhkzytNN2SN96QRk8j/iI8ib";
};
*/

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