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RedHat 9 (Linux i386) - man page for kadmind (redhat section 8)

KADMIND(8)									       KADMIND(8)

       kadmind - KADM5 administration server

       kadmind [-r realm] [-m] [-nofork] [-port port-number]

       This  command  starts  the KADM5 administration server.	The administration server runs on
       the master Kerberos server, which stores the KDC principal database and the  KADM5  policy
       database.   Kadmind  accepts  remote requests to administer the information in these data-
       bases.  Remote requests are sent, for example, by kadmin(8) and	the  kpasswd(1)  command,
       both of which are clients of kadmind.

       kadmind requires a number of configuration files to be set up in order for it to work:

       kdc.conf  The KDC configuration file contains configuration informatin for the KDC and the
		 KADM5 system.	Kadmind understands a number of variable settings in  this  file,
		 some  of  whch are mandatory and some of which are optional.  See the CONFIGURA-
		 TION VALUES section below.

       keytab	 Kadmind requires a keytab containing correct entries for  the	kadmin/admin  and
		 kadmin/changepw  principals  for  every  realm that kadmind will answer requests
		 for.  The keytab can be created with the kadmin(8) client.  The location of  the
		 keytab  is determined by the admin_keytab configuration variable (see CONFIGURA-

       ACL file  Kadmind's ACL (access control list) tells it which  principals  are  allowed  to
		 perform KADM5 administration actions.	The path of the ACL file is specified via
		 the acl_file configuration variable (see CONFIGURATION VALUES).  The  syntax  of
		 the ACL file is specified in the ACL FILE SYNTAX section below.

       After the server begins running, it puts itself in the background and disassociates itself
       from its controlling terminal.

       -r realm
	      specifies the default realm that kadmind will serve; if it is  not  specified,  the
	      default realm of the host is used.  kadmind will answer requests for any realm that
	      exists in the local KDC database and for which the appropriate  principals  are  in
	      its keytab.

       -m     specifies  that  the  master  database password should be fetched from the keyboard
	      rather than from a file on disk.	Note that the server gets the password	prior  to
	      putting  itself in the background; in combination with the -nofork option, you must
	      place it in the background by hand.

	      specifies that the server does not put itself in the background and does not disas-
	      sociate itself from the terminal.  In normal operation, you should always allow the
	      server place itself in the background.

       -port port-number
	      specifies the port on which the administration server listens for connections.  The
	      default is is controlled by the kadmind_port configuration variable (see below).

       In  addition  to  the  relations defined in kdc.conf(5), kadmind understands the following
       relations, all of which should appear in the [realms] section:

	      The path of kadmind's ACL file.  Mandatory.  No default.

	      The path of kadmind's password dictionary.  A principal with  any  password  policy
	      will  not  be  allowed  to  select  any  password in the dictionary.  Optional.  No

	      The name of the keytab containing entries for the principals kadmin/admin and  kad-
	      min/changepw  in	each  realm that kadmind will serve.  The default is the value of
	      the KRB5_KTNAME environment variable, if defined.  Mandatory.

	      The TCP port on which kadmind will listen.  The default is 749.

       The ACL file controls which principals can or cannot perform  which  administrative  func-
       tions.  For operations that affect principals, the ACL file also controls which principals
       can operate on which other principals.  This file can contain comment lines, null lines or
       lines which contain ACL entries.  Comment lines start with the sharp sign (#) and continue
       until the end of the line.  Lines containing ACL entries  have  the  format  of	principal
       whitespace operation-mask [whitespace operation-target]

       Ordering  is important.	The first matching entry is the one which will control access for
       a particular principal on a particular principal.

	      may specify a partially or fully qualified Kerberos version 5 principal name.  Each
	      component of the name may be wildcarded using the asterisk ( * ) character.

	      [Optional]  may specify a partially or fully qualified Kerberos version 5 principal
	      name.  Each component of the name may be wildcarded using the asterisk ( * )  char-

	      Specifies what operations may or may not be peformed by a principal matching a par-
	      ticular entry.  This is a string of one or more of the following list of characters
	      or  their upper-case counterparts.  If the character is upper-case, then the opera-
	      tion is disallowed.  If the character is lower-case, then the operation is  permit-

	      a    [Dis]allows the addition of principals or policies in the database.
	      d    [Dis]allows the deletion of principals or policies in the database.
	      m    [Dis]allows the modification of principals or policies in the database.
	      c    [Dis]allows the changing of passwords for principals in the database.
	      i    [Dis]allows inquiries to the database.
	      l    [Dis]allows the listing of principals or policies in the database.
	      x    Short for admcil.
	      *    Same as x.
       Some examples of valid entries here are:

       user/instance@realm adm
	      A standard fully qualified name.	The operation-mask only applies to this principal
	      and specifies that [s]he may add, delete or modify principals and policies, but not
	      change anybody else's password.

       user/instance@realm cim service/instance@realm
	      A  standard fully qualified name and a standard fully qualified target.  The opera-
	      tion-mask only applies to this principal operating on  this  target  and	specifies
	      that  [s]he  may change the target's password, request information about the target
	      and modify it.

       user/*@realm ac
	      A wildcarded name.  The operation-mask applies to all principals in  realm  "realm"
	      whose  first  component  is  "user" and specifies that [s]he may add principals and
	      change anybody's password.

       user/*@realm i */instance@realm
	      A wildcarded name and target.  The operation-mask  applies  to  all  principals  in
	      realm  "realm" whose first component is "user" and specifies that [s]he may perform
	      inquiries on principals whose second component is "instance" and realm is "realm".

       principal.db	   default name for Kerberos principal database

       <dbname>.kadm5	   KADM5 administrative database.  (This would be  "principal.kadm5",  if
			   you use the default database name.)	Contains policy information.

       <dbname>.kadm5.lock lock  file  for  the  KADM5	administrative database.  This file works
			   backwards from most other lock files.  I.e., kadmin will exit with  an
			   error if this file does not exist.

       kadm5.acl	   file  containing  list  of  principals and their kadmin administrative
			   privileges.	See above for a description.

       kadm5.keytab	   keytab file for kadmin/admin principal.

       kadm5.dict	   file containing dictionary of strings explicitly disallowed	as  pass-

       kpasswd(1), kadmin(8), kdb5_util(8), kadm5_export(8), kadm5_import(8)


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