`named.conf`
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## Name

`named.conf` — configuration file for named

## Synopsis

`named.conf`

## DESCRIPTION

`named.conf` is the configuration file for named. Statements are enclosed in braces and terminated with a semi-colon. Clauses in the statements are also semi-colon terminated. The usual comment styles are supported:

C style: /* */

C++ style: // to end of line

Unix style: # to end of line

## ACL

acl `string` { `address_match_element`; ... };

## KEY

key `domain_name` {
algorithm `string`;
secret `string`;
};

## MASTERS

masters `string` [ port `integer` ] {
( `masters` | `ipv4_address` [port `integer`] |
`ipv6_address` [port `integer`] ) [ key `string` ]; ...
};

## SERVER

server ( `ipv4_address[/prefixlen]` | `ipv6_address[/prefixlen]` ) {
bogus `boolean`;
edns `boolean`;
edns-udp-size `integer`;
max-udp-size `integer`;
tcp-only `boolean`;
provide-ixfr `boolean`;
request-ixfr `boolean`;
keys `server_key`;
transfers `integer`;
transfer-format ( many-answers | one-answer );
transfer-source ( `ipv4_address` | * )
[ port ( `integer` | * ) ];
transfer-source-v6 ( `ipv6_address` | * )
[ port ( `integer` | * ) ];
support-ixfr `boolean`; // obsolete
};

## TRUSTED-KEYS

trusted-keys {
`domain_name` `flags` `protocol` `algorithm` `key`; ...
};

## MANAGED-KEYS

managed-keys {
`domain_name` `initial-key` `flags` `protocol` `algorithm` `key`; ...
};

## CONTROLS

controls {
inet ( `ipv4_address` | `ipv6_address` | * )
[ port ( `integer` | * ) ]
allow { `address_match_element`; ... }
[ keys { `string`; ... } ];
unix `unsupported`; // not implemented
};

## LOGGING

logging {
channel `string` {
file `log_file`;
syslog `optional_facility`;
null;
stderr;
severity `log_severity`;
print-time `boolean`;
print-severity `boolean`;
print-category `boolean`;
};
category `string` { `string`; ... };
};

## LWRES

lwres {
listen-on [ port `integer` ] {
( `ipv4_address` | `ipv6_address` ) [ port `integer` ]; ...
};
view `string` `optional_class`;
search { `string`; ... };
ndots `integer`;
lwres-tasks `integer`;
lwres-clients `integer`;
};

## OPTIONS

options {
avoid-v4-udp-ports { `port`; ... };
avoid-v6-udp-ports { `port`; ... };
blackhole { `address_match_element`; ... };
coresize `size`;
datasize `size`;
directory `quoted_string`;
dnstap { `message_type`; ... };
dnstap-output ( `file` | `unix` ) `path_name`;
dnstap-identity ( `string` | `hostname` | `none` );
dnstap-version ( `string` | `none` );
dump-file `quoted_string`;
files `size`;
fstrm-set-buffer-hint `number`;
fstrm-set-flush-timeout `number`;
fstrm-set-input-queue-size `number`;
fstrm-set-output-notify-threshold `number`;
fstrm-set-output-queue-model ( `mpsc` | `spsc` ) ;
fstrm-set-output-queue-size `number`;
fstrm-set-reopen-interval `number`;
heartbeat-interval `integer`;
host-statistics `boolean`; // not implemented
host-statistics-max `number`; // not implemented
hostname ( `quoted_string` | none );
interface-interval `integer`;
keep-response-order { `address_match_element`; ... };
listen-on [ port `integer` ] { `address_match_element`; ... };
listen-on-v6 [ port `integer` ] { `address_match_element`; ... };
match-mapped-addresses `boolean`;
memstatistics-file `quoted_string`;
pid-file ( `quoted_string` | none );
port `integer`;
querylog `boolean`;
recursing-file `quoted_string`;
reserved-sockets `integer`;
random-device `quoted_string`;
recursive-clients `integer`;
serial-query-rate `integer`;
server-id ( `quoted_string` | hostname | none );
stacksize `size`;
statistics-file `quoted_string`;
statistics-interval `integer`; // not yet implemented
tcp-clients `integer`;
tcp-listen-queue `integer`;
tkey-dhkey `quoted_string` `integer`;
tkey-gssapi-credential `quoted_string`;
tkey-gssapi-keytab `quoted_string`;
tkey-domain `quoted_string`;
transfer-message-size `integer`;
transfers-per-ns `integer`;
transfers-in `integer`;
transfers-out `integer`;
version ( `quoted_string` | none );
allow-recursion { `address_match_element`; ... };
allow-recursion-on { `address_match_element`; ... };
sortlist { `address_match_element`; ... };
topology { `address_match_element`; ... }; // not implemented
auth-nxdomain `boolean`; // default changed
minimal-any `boolean`;
minimal-responses ( `boolean` | no-auth | no-auth-recursive );
recursion `boolean`;
rrset-order {
[ class `string` ] [ type `string` ]
[ name `quoted_string` ] `string` `string`; ...
};
provide-ixfr `boolean`;
request-ixfr `boolean`;
rfc2308-type1 `boolean`; // not yet implemented
additional-from-auth `boolean`;
additional-from-cache `boolean`;
query-source ( ( `ipv4_address` | * ) | [ address ( `ipv4_address` | * ) ] ) [ port ( `integer` | * ) ];
query-source-v6 ( ( `ipv6_address` | * ) | [ address ( `ipv6_address` | * ) ] ) [ port ( `integer` | * ) ];
use-queryport-pool `boolean`;
queryport-pool-ports `integer`;
queryport-pool-updateinterval `integer`;
cleaning-interval `integer`;
resolver-query-timeout `integer`;
min-roots `integer`; // not implemented
lame-ttl `integer`;
max-ncache-ttl `integer`;
max-cache-ttl `integer`;
transfer-format ( many-answers | one-answer );
max-cache-size `size`;
max-acache-size `size`;
clients-per-query `number`;
max-clients-per-query `number`;
check-names ( master | slave | response )
( fail | warn | ignore );
check-mx ( fail | warn | ignore );
check-integrity `boolean`;
check-mx-cname ( fail | warn | ignore );
check-srv-cname ( fail | warn | ignore );
cache-file `quoted_string`; // test option
catalog-zones {
zone `quoted_string`
[ default-masters
[port `ip_port`]
[dscp `ip_dscp`]
{ ( `masters_list` | `ip_addr` [port `ip_port`] [key `key`] ) ; [...] }]
[in-memory `yes_or_no`]
[min-update-interval `interval`]
; ... };
;
suppress-initial-notify `boolean`; // not yet implemented
preferred-glue `string`;
dual-stack-servers [ port `integer` ] {
( `quoted_string` [port `integer`] |
`ipv4_address` [port `integer`] |
`ipv6_address` [port `integer`] ); ...
};
edns-udp-size `integer`;
max-udp-size `integer`;
root-delegation-only [ exclude { `quoted_string`; ... } ];
disable-algorithms `string` { `string`; ... };
disable-ds-digests `string` { `string`; ... };
dnssec-enable `boolean`;
dnssec-validation `boolean`;
dnssec-lookaside ( `auto` | `no` | `domain` trust-anchor `domain` );
dnssec-must-be-secure `string` `boolean`;
dnssec-accept-expired `boolean`;
dns64-server `string`;
dns64-contact `string`;
dns64 `prefix` {
clients { `acl`; };
exclude { `acl`; };
mapped { `acl`; };
break-dnssec `boolean`;
recursive-only `boolean`;
suffix `ipv6_address`;
};
empty-server `string`;
empty-contact `string`;
empty-zones-enable `boolean`;
disable-empty-zone `string`;
dialup `dialuptype`;
ixfr-from-differences `ixfrdiff`;
allow-query { `address_match_element`; ... };
allow-query-on { `address_match_element`; ... };
allow-query-cache { `address_match_element`; ... };
allow-query-cache-on { `address_match_element`; ... };
allow-transfer { `address_match_element`; ... };
allow-update { `address_match_element`; ... };
allow-update-forwarding { `address_match_element`; ... };
update-check-ksk `boolean`;
dnssec-dnskey-kskonly `boolean`;
masterfile-format ( text | raw | map );
notify `notifytype`;
notify-source ( `ipv4_address` | * ) [ port ( `integer` | * ) ];
notify-source-v6 ( `ipv6_address` | * ) [ port ( `integer` | * ) ];
notify-delay `seconds`;
notify-to-soa `boolean`;
also-notify [ port `integer` ] { ( `ipv4_address` | `ipv6_address` )
[ port `integer` ]; ...
[ key `keyname` ] ... };
allow-notify { `address_match_element`; ... };
forward ( first | only );
forwarders [ port `integer` ] {
( `ipv4_address` | `ipv6_address` ) [ port `integer` ]; ...
};
max-journal-size `size_no_default`;
max-transfer-time-in `integer`;
max-transfer-time-out `integer`;
max-transfer-idle-in `integer`;
max-transfer-idle-out `integer`;
max-retry-time `integer`;
min-retry-time `integer`;
max-refresh-time `integer`;
min-refresh-time `integer`;
multi-master `boolean`;
sig-validity-interval `integer`;
sig-re-signing-interval `integer`;
sig-signing-nodes `integer`;
sig-signing-signatures `integer`;
sig-signing-type `integer`;
transfer-source ( `ipv4_address` | * )
[ port ( `integer` | * ) ];
transfer-source-v6 ( `ipv6_address` | * )
[ port ( `integer` | * ) ];
alt-transfer-source ( `ipv4_address` | * )
[ port ( `integer` | * ) ];
alt-transfer-source-v6 ( `ipv6_address` | * )
[ port ( `integer` | * ) ];
use-alt-transfer-source `boolean`;
zone-statistics `boolean`;
key-directory `quoted_string`;
managed-keys-directory `quoted_string`;
auto-dnssec `allow`|`maintain`|`off`;
try-tcp-refresh `boolean`;
zero-no-soa-ttl `boolean`;
zero-no-soa-ttl-cache `boolean`;
dnssec-secure-to-insecure `boolean`;
automatic-interface-scan `boolean`;
cookie-algorithm ( `aes` | `sha1` | `sha256` );
cookie-secret `string`;
require-server-cookie `boolean`;
send-cookie `boolean`;
nocookie-udp-size `integer`;
deny-answer-addresses {
`address_match_list`
} [ except-from { `namelist` } ];
deny-answer-aliases {
`namelist`
} [ except-from { `namelist` } ];
nsec3-test-zone `boolean`; // testing only
allow-v6-synthesis { `address_match_element`; ... }; // obsolete
deallocate-on-exit `boolean`; // obsolete
fake-iquery `boolean`; // obsolete
fetch-glue `boolean`; // obsolete
has-old-clients `boolean`; // obsolete
maintain-ixfr-base `boolean`; // obsolete
max-ixfr-log-size `size`; // obsolete
multiple-cnames `boolean`; // obsolete
named-xfer `quoted_string`; // obsolete
serial-queries `integer`; // obsolete
treat-cr-as-space `boolean`; // obsolete
use-id-pool `boolean`; // obsolete
use-ixfr `boolean`; // obsolete
};

## VIEW

view `string` `optional_class` {
match-clients { `address_match_element`; ... };
match-destinations { `address_match_element`; ... };
match-recursive-only `boolean`;
key `string` {
algorithm `string`;
secret `string`;
};
zone `string` `optional_class` {
...
};
server ( `ipv4_address[/prefixlen]` | `ipv6_address[/prefixlen]` ) {
...
};
trusted-keys {
`string` `integer` `integer` `integer` `quoted_string`;
[...]
};
allow-recursion { `address_match_element`; ... };
allow-recursion-on { `address_match_element`; ... };
sortlist { `address_match_element`; ... };
topology { `address_match_element`; ... }; // not implemented
auth-nxdomain `boolean`; // default changed
minimal-any `boolean`;
minimal-responses `boolean`;
recursion `boolean`;
rrset-order {
[ class `string` ] [ type `string` ]
[ name `quoted_string` ] `string` `string`; ...
};
provide-ixfr `boolean`;
request-ixfr `boolean`;
rfc2308-type1 `boolean`; // not yet implemented
additional-from-auth `boolean`;
additional-from-cache `boolean`;
query-source ( ( `ipv4_address` | * ) | [ address ( `ipv4_address` | * ) ] ) [ port ( `integer` | * ) ];
query-source-v6 ( ( `ipv6_address` | * ) | [ address ( `ipv6_address` | * ) ] ) [ port ( `integer` | * ) ];
use-queryport-pool `boolean`;
queryport-pool-ports `integer`;
queryport-pool-updateinterval `integer`;
cleaning-interval `integer`;
resolver-query-timeout `integer`;
min-roots `integer`; // not implemented
lame-ttl `integer`;
max-ncache-ttl `integer`;
max-cache-ttl `integer`;
transfer-format ( many-answers | one-answer );
max-cache-size `size`;
max-acache-size `size`;
clients-per-query `number`;
max-clients-per-query `number`;
check-names ( master | slave | response )
( fail | warn | ignore );
check-mx ( fail | warn | ignore );
check-integrity `boolean`;
check-mx-cname ( fail | warn | ignore );
check-srv-cname ( fail | warn | ignore );
cache-file `quoted_string`; // test option
suppress-initial-notify `boolean`; // not yet implemented
preferred-glue `string`;
dual-stack-servers [ port `integer` ] {
( `quoted_string` [port `integer`] |
`ipv4_address` [port `integer`] |
`ipv6_address` [port `integer`] ); ...
};
edns-udp-size `integer`;
max-udp-size `integer`;
root-delegation-only [ exclude { `quoted_string`; ... } ];
disable-algorithms `string` { `string`; ... };
disable-ds-digests `string` { `string`; ... };
dnssec-enable `boolean`;
dnssec-validation `boolean`;
dnssec-lookaside ( `auto` | `no` | `domain` trust-anchor `domain` );
dnssec-must-be-secure `string` `boolean`;
dnssec-accept-expired `boolean`;
dns64-server `string`;
dns64-contact `string`;
dns64 `prefix` {
clients { `acl`; };
exclude { `acl`; };
mapped { `acl`; };
break-dnssec `boolean`;
recursive-only `boolean`;
suffix `ipv6_address`;
};
empty-server `string`;
empty-contact `string`;
empty-zones-enable `boolean`;
disable-empty-zone `string`;
dialup `dialuptype`;
ixfr-from-differences `ixfrdiff`;
allow-query { `address_match_element`; ... };
allow-query-on { `address_match_element`; ... };
allow-query-cache { `address_match_element`; ... };
allow-query-cache-on { `address_match_element`; ... };
allow-transfer { `address_match_element`; ... };
allow-update { `address_match_element`; ... };
allow-update-forwarding { `address_match_element`; ... };
update-check-ksk `boolean`;
dnssec-dnskey-kskonly `boolean`;
masterfile-format ( text | raw | map );
notify `notifytype`;
notify-source ( `ipv4_address` | * ) [ port ( `integer` | * ) ];
notify-source-v6 ( `ipv6_address` | * ) [ port ( `integer` | * ) ];
notify-delay `seconds`;
notify-to-soa `boolean`;
also-notify [ port `integer` ] { ( `ipv4_address` | `ipv6_address` )
[ port `integer` ]; ...
[ key `keyname` ] ... };
allow-notify { `address_match_element`; ... };
forward ( first | only );
forwarders [ port `integer` ] {
( `ipv4_address` | `ipv6_address` ) [ port `integer` ]; ...
};
max-journal-size `size_no_default`;
max-transfer-time-in `integer`;
max-transfer-time-out `integer`;
max-transfer-idle-in `integer`;
max-transfer-idle-out `integer`;
max-retry-time `integer`;
min-retry-time `integer`;
max-refresh-time `integer`;
min-refresh-time `integer`;
multi-master `boolean`;
sig-validity-interval `integer`;
transfer-source ( `ipv4_address` | * )
[ port ( `integer` | * ) ];
transfer-source-v6 ( `ipv6_address` | * )
[ port ( `integer` | * ) ];
alt-transfer-source ( `ipv4_address` | * )
[ port ( `integer` | * ) ];
alt-transfer-source-v6 ( `ipv6_address` | * )
[ port ( `integer` | * ) ];
use-alt-transfer-source `boolean`;
zone-statistics `boolean`;
try-tcp-refresh `boolean`;
key-directory `quoted_string`;
zero-no-soa-ttl `boolean`;
zero-no-soa-ttl-cache `boolean`;
dnssec-secure-to-insecure `boolean`;
require-server-cookie `boolean`;
send-cookie `boolean`;
nocookie-udp-size `integer`;
allow-v6-synthesis { `address_match_element`; ... }; // obsolete
fetch-glue `boolean`; // obsolete
maintain-ixfr-base `boolean`; // obsolete
max-ixfr-log-size `size`; // obsolete
};

## ZONE

zone `string` `optional_class` {
type ( master | slave | stub | hint | redirect |
forward | delegation-only );
file `quoted_string`;
masters [ port `integer` ] {
( `masters` |
`ipv4_address` [port `integer`] |
`ipv6_address` [ port `integer` ] ) [ key `string` ]; ...
};
database `string`;
delegation-only `boolean`;
check-names ( fail | warn | ignore );
check-mx ( fail | warn | ignore );
check-integrity `boolean`;
check-mx-cname ( fail | warn | ignore );
check-srv-cname ( fail | warn | ignore );
dialup `dialuptype`;
ixfr-from-differences `boolean`;
journal `quoted_string`;
zero-no-soa-ttl `boolean`;
dnssec-secure-to-insecure `boolean`;
allow-query { `address_match_element`; ... };
allow-query-on { `address_match_element`; ... };
allow-transfer { `address_match_element`; ... };
allow-update { `address_match_element`; ... };
allow-update-forwarding { `address_match_element`; ... };
update-policy `local` | `{
( grant | deny ) `string`
( name | subdomain | wildcard | self | selfsub | selfwild |
krb5-self | ms-self | krb5-subdomain | ms-subdomain |
tcp-self | zonesub | 6to4-self ) `string`
`rrtypelist`;
[...]
}`;
update-check-ksk `boolean`;
dnssec-dnskey-kskonly `boolean`;
masterfile-format ( text | raw | map );
notify `notifytype`;
notify-source ( `ipv4_address` | * ) [ port ( `integer` | * ) ];
notify-source-v6 ( `ipv6_address` | * ) [ port ( `integer` | * ) ];
notify-delay `seconds`;
notify-to-soa `boolean`;
also-notify [ port `integer` ] { ( `ipv4_address` | `ipv6_address` )
[ port `integer` ]; ...
[ key `keyname` ] ... };
allow-notify { `address_match_element`; ... };
forward ( first | only );
forwarders [ port `integer` ] {
( `ipv4_address` | `ipv6_address` ) [ port `integer` ]; ...
};
max-journal-size `size_no_default`;
max-transfer-time-in `integer`;
max-transfer-time-out `integer`;
max-transfer-idle-in `integer`;
max-transfer-idle-out `integer`;
max-retry-time `integer`;
min-retry-time `integer`;
max-refresh-time `integer`;
min-refresh-time `integer`;
multi-master `boolean`;
request-ixfr `boolean`;
sig-validity-interval `integer`;
transfer-source ( `ipv4_address` | * )
[ port ( `integer` | * ) ];
transfer-source-v6 ( `ipv6_address` | * )
[ port ( `integer` | * ) ];
alt-transfer-source ( `ipv4_address` | * )
[ port ( `integer` | * ) ];
alt-transfer-source-v6 ( `ipv6_address` | * )
[ port ( `integer` | * ) ];
use-alt-transfer-source `boolean`;
zone-statistics `boolean`;
try-tcp-refresh `boolean`;
key-directory `quoted_string`;
nsec3-test-zone `boolean`; // testing only
ixfr-base `quoted_string`; // obsolete
ixfr-tmp-file `quoted_string`; // obsolete
maintain-ixfr-base `boolean`; // obsolete
max-ixfr-log-size `size`; // obsolete
pubkey `integer` `integer` `integer` `quoted_string`; // obsolete
};

## FILES

`/etc/named.conf`

## SEE ALSO

named(8), named-checkconf(8), rndc(8), BIND 9 Administrator Reference Manual.

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