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.TH KDC.CONF 5
.SH NAME
kdc.conf \- Kerberos V5 KDC configuration file
.SH DESCRIPTION
.I kdc.conf
specifies per-realm configuration data to be used by the Kerberos V5
Authentication Service and Key Distribution Center (AS/KDC).  This
includes database, key and per-realm defaults.
.PP
The 
.I kdc.conf
file uses the same format as the
.I krb5.conf
file.  For a basic description of the syntax, please refer to the
.I krb5.conf
description.
.PP
The following sections are currently used in the
.I kdc.conf
file:
.IP [kdcdefaults]
Contains parameters which control the overall behaviour of the KDC.
.IP [realms]
Contains subsections keyed by Kerberos realm names which describe per-realm
KDC parameters.
.SH KDCDEFAULTS SECTION
The following relations are defined in the
.I [kdcdefaults]
section:
.IP kdc_ports
This relation lists the ports which the Kerberos server should listen
on, by default.  This list is a comma separated list of integers.  If
this relation is not specified, the compiled-in default is usually
port 88 and port 750.

.IP v4_mode
This 
.B string
specifies how the KDC should respond to Kerberos IV packets. If this
relation is not specified, the compiled-in default of
.I nopreauth 
is used.

.SH REALMS SECTION
Each tag in the
.I [realms]
section of the file names a Kerberos realm.  The value of the tag is a
subsection where the relations in that subsection define KDC parameters for
that particular realm.
.PP
For each realm, the following tags may be specified in the
.I [realms]
subsection:
.IP database_name
This
.B string
specifies the location of the Kerberos database for this realm.

.IP master_key_name
This
.B string
specifies the name of the master key.

.IP master_key_type
This
.B key type string
represents the master key's key type.

.IP encryption_type
This
.B encryption type string
represents the encryption type used for this realm.

.IP key_stash_file
This
.B string
specifies the location where the master key has been stored with
.I kdb5_stash.

.IP kdc_ports
This
.B string
specifies the list of ports that the KDC is to listen to for this realm.  
By default, the value of 
.I kdc_ports
as specified in the 
.I [kdcdefaults] 
section is used.

.IP max_life
This
.B delta time string
specifes the maximum time period that a ticket may be valid for in
this realm.  

.IP max_renewable_life
This
.B delta time string
specifies the maximum time period that a ticket may be renewed for in
this realm. 

.IP default_principal_expiration
This
.B absolute time string
specifies the default expiration date of principals created in this realm.

.IP default_principal_flags
This
.B flag string
specifies the default attributes of principals created in this realm.

.IP supported_keytypes
This list of
.B key
:
.B salt
strings specifies the default key/salt combinations of principals for this
realm.

.SH FILES 
/usr/local/lib/krb5kdc/kdc.conf

.SH SEE ALSO
krb5.conf(5), krb5kdc(8)