NAME

       k5login - Kerberos V5 acl file for host access

DESCRIPTION

       The  .k5login  file,  which  resides  in  a  user's home directory, contains a list of the
       Kerberos principals.  Anyone with valid tickets for a principal in  the  file  is  allowed
       host access with the UID of the user in whose home directory the file resides.  One common
       use is to place a  .k5login  file  in  root's  home  directory,  thereby  granting  system
       administrators remote root access to the host via Kerberos.

EXAMPLES

       Suppose  the user alice had a .k5login file in her home directory containing the following
       line:

          bob@FOOBAR.ORG

       This would allow bob to use Kerberos network  applications,  such  as  ssh(1),  to  access
       alice's account, using bob's Kerberos tickets.

       Let  us  further suppose that alice is a system administrator.  Alice and the other system
       administrators would have their principals in root's .k5login file on each host:

          alice@BLEEP.COM

          joeadmin/root@BLEEP.COM

       This would allow either system administrator to log in to these hosts using their Kerberos
       tickets  instead  of  having to type the root password.  Note that because bob retains the
       Kerberos tickets for his own principal, bob@FOOBAR.ORG, he  would  not  have  any  of  the
       privileges  that  require alice's tickets, such as root access to any of the site's hosts,
       or the ability to change alice's password.

SEE ALSO

       kerberos(1)

AUTHOR

       MIT

COPYRIGHT

       1985-2013, MIT