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37 .Nd Kerberos 5 password changing server
41 .Op Fl Fl addresses= Ns Ar address
42 .Op Fl Fl check-library= Ns Ar library
43 .Op Fl Fl check-function= Ns Ar function
44 .Oo Fl k Ar kspec \*(Ba Xo
45 .Fl Fl keytab= Ns Ar kspec
48 .Oo Fl r Ar realm \*(Ba Xo
49 .Fl Fl realm= Ns Ar realm
52 .Oo Fl p Ar string \*(Ba Xo
53 .Fl Fl port= Ns Ar string
61 serves request for password changes. It listens on UDP port 464
62 (service kpasswd) and processes requests when they arrive. It changes
63 the database directly and should thus only run on the master KDC.
67 .It Fl Fl addresses= Ns Ar address
68 For each till the argument is given, add the address to what kpasswdd
70 .It Fl Fl check-library= Ns Ar library
71 If your system has support for dynamic loading of shared libraries,
72 you can use an external function to check password quality. This
73 option specifies which library to load.
74 .It Fl Fl check-function= Ns Ar function
75 This is the function to call in the loaded library. The function
76 should look like this:
79 .Fn passwd_check "krb5_context context" "krb5_principal principal" "krb5_data *password"
82 is an initialized context;
84 is the one who tries to change passwords, and
86 is the new password. Note that the password (in
88 is not zero terminated.
89 .It Fl k Ar kspec , Fl Fl keytab= Ns Ar kspec
90 Keytab to get authentication key from.
91 .It Fl r Ar realm , Fl Fl realm= Ns Ar realm
93 .It Fl p Ar string , Fl Fl port= Ns Ar string
94 Port to listen on (default service kpasswd - 464).
97 If an error occurs, the error message is returned to the user and/or
100 The default password quality checks are too basic.