2001-09-17 16:32:33 +04:00
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.\" $Id: kpasswdd.8,v 1.4 2001/09/17 12:32:36 assar Exp $
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.\"
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.Dd April 19, 1999
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.Dt KPASSWDD 8
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2001-06-05 14:13:54 +04:00
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.Os
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.Sh NAME
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.Nm kpasswdd
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.Nd Kerberos 5 password changing server
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.Sh SYNOPSIS
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.Nm
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.Op Fl -check-library= Ns Ar library
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.Op Fl -check-function= Ns Ar function
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.Oo Fl k Ar kspec \*(Ba Xo
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.Fl -keytab= Ns Ar kspec
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.Xc
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.Oc
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.Oo Fl r Ar realm \*(Ba Xo
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.Fl -realm= Ns Ar realm
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.Xc
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.Oc
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.Oo Fl p Ar string \*(Ba Xo
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.Fl -port= Ns Ar string
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.Xc
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.Oc
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.Op Fl -version
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.Op Fl -help
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.Sh DESCRIPTION
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.Nm
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serves request for password changes. It listens on UDP port 464
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(service kpasswd) and processes requests when they arrive. It changes
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the database directly and should thus only run on the master KDC.
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.Pp
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Supported options:
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.Bl -tag -width Ds
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.It Xo
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.Fl -check-library= Ns Ar library
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.Xc
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If your system has support for dynamic loading of shared libraries,
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you can use an external function to check password quality. This
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option specifies which library to load.
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.It Xo
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.Fl -check-function= Ns Ar function
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.Xc
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This is the function to call in the loaded library. The function
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should look like this:
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.Pp
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.Ft const char *
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.Fn passwd_check "krb5_context context" "krb5_principal principal" "krb5_data *password"
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.Pp
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.Fa context
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is an initialized context;
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.Fa principal
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is the one who tries to change passwords, and
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.Fa password
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is the new password. Note that the password (in
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.Fa password->data )
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is not zero terminated.
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.It Xo
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.Fl k Ar kspec Ns ,
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.Fl -keytab= Ns Ar kspec
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.Xc
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keytab to get authentication key from
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.It Xo
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.Fl r Ar realm Ns ,
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.Fl -realm= Ns Ar realm
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.Xc
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default realm
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.It Xo
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.Fl p Ar string Ns ,
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.Fl -port= Ns Ar string
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.Xc
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port to listen on (default service kpasswd - 464).
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.El
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.Sh DIAGNOSTICS
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If an error occurs, the error message is returned to the user and/or
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logged to syslog.
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.Sh BUGS
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The default password quality checks are too basic.
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.Sh SEE ALSO
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2001-09-17 16:32:33 +04:00
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.Xr kpasswd 1 ,
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.Xr kdc 8
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.\".Sh ENVIRONMENT
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.\".Sh FILES
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.\".Sh EXAMPLES
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.\".Sh SEE ALSO
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.\".Sh STANDARDS
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.\".Sh HISTORY
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.\".Sh AUTHORS
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