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named(8)							      named(8)

       named - Internet name domain server daemon

       /usr/etc/named  [  -d  level#  ] [ -p port# ] [ -b bootfile ][ -n ][ -a
       type.version ]

       The daemon is the Internet domain name server for the BIND/Hesiod  ser‐
       vice.   Without any arguments, reads the default boot file and any ini‐
       tial data from the BIND/Hesiod  data  base  files.   then  listens  for

       The boot file specifies where the BIND/Hesiod server is to get its ini‐
       tial data.  See the Example section.

       The master data files consist of entries of the following form:
       $include file
       $origin domain
       domain ttl addr-class entry-type resource-record-data
       The entry is useful for separating data into separate files.  The entry
       is useful for placing more than one domain in a data file.  It can also
       be used to set the reverse network number origin.  The fields are:

       file	    This is the name of the file to be included.

       domain	    This is the domain name.  An at  sign  (@)	signifies  the
		    current  origin.   A  name	refers	to the standard domain
		    name.  If the domain name does not end with a period,  the
		    current  origin  is appended to the domain.	 A domain name
		    ending with a period is  the  complete  BIND  domain  name
		    (fully  qualified)	and  thus  does	 not  get an extension
		    appended to it.

       ttl	    This field is an optional integer specifying the  time  to
		    live.   If	no  time  to live is specified, the default is
		    obtained from the SOA entry.

       addr-class   This field is the object  class  type.   There  are	 three

		    IN	       Objects connected to the DARPA Internet

		    HS	       Hesiod naming service data

		    ANY	       All classes

       entry-type   The	 most  common entries for this field are listed below.
		    The field, however, must correspond with the entry type:

		    A	       Host address

		    CNAME      Canonical name for an alias

		    HINFO      Host information

		    MX	       Mail exchanger

		    NS	       Authoritative name server

		    PTR	       Domain name pointer

		    SOA	       Start of a zone of authority

		    TXT	       Hesiod text

		    WKS	       Well-known service description

       The following signals have the specified effect when sent to the server
       process using the command:

       SIGXFSZ	    Causes  the	 server to reload only the databases that have

       SIGHUP	    Causes the server to read and reload database.

       SIGINT	    Dumps the current data base and cache to

       SIGIOT	    Dumps statistics to

       SIGUSR1	    Turns on debugging.	  Each	time  the  SIGUSR1  signal  is
		    issued,  the  debug	 level	increments  by one.  Debugging
		    information is dumped to

       SIGUSR2	    Turns off debugging.

       -b bootfile  Names of the boot file.  If no boot file is specified, the
		    default is

       -d level#    Prints  debugging  information.   A	 number	 after	the -d
		    option determines the level of messages printed.  It is  a
		    good  idea	to  run	 the  daemon with the -d option in the

       -p port#	    Specifies the port number.	The default  is	 the  standard
		    port number listed in the file.

       -n	    Runs in network safe mode.	All HS class queries sent over
		    the network are authenticated.  Non-authenticated  queries
		    for	 HS  information  from hosts other than local host are
		    not answered.  Non-authenticated requests for zone	trans‐
		    fers are ignored.

       -a type.version
		    Specifies the default authentication type.	When authenti‐
		    cated queries are formed,  needs  to  know	what  type  of
		    authentication  to	use.  The type parameter specifies the
		    form of authentication.  The version  parameter  specifies
		    the	 version  of  the type to use.	The supported forms of
		    authentication are:

		    type      Kerberos

		    version   One

       The following is an example of a boot file:
       ;     boot file for name server
       ; type	  domain		 source file or host
       primary		 hosts.db
       primary	 hosts.rev
       primary	 named.local
       ; load the cache data last
       cache	   .
       Entries beginning with a semicolon are comment lines.  In this example,
       the  first line that is not a comment specifies that this system is the
       primary authoritative BIND server for the domain This line also	speci‐
       fies  that the file contains authoritative data for the domain.	Domain
       names in the file are relative to the origin, such as in the  preceding

       The  second  and	 third	non-comment  entries  (beginning with show the
       domain in reverse order.	 This allows address to name mapping.

       The fourth non-comment line specifies that all authoritative data under
       is  to  be  transferred from the primary master server at IP address to
       the secondary server.  If the transfer fails, the secondary server will
       then  try  the  master  server  at  address  There  can	be up to 10 IP
       addresses listed.

       The cache entry specifies that the data in  is  to  be  placed  in  the
       cache.	This  would  include  well known data such as the locations of
       root domain servers.

       Name server configuration boot file

       Process ID number

       Debug output

       Dump of the BIND server's cache

See Also
       kill(1), signal(3c), resolver(3), hesiod.conf(5), resolv.conf(5)
       Guide to the BIND/Hesiod Service


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