K5LOGIN man page on Archlinux

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K5LOGIN(5)			 MIT Kerberos			    K5LOGIN(5)

       k5login - Kerberos V5 acl file for host access

       The .k5login file, which resides in a user's home directory, contains a
       list of the Kerberos principals.	 Anyone with valid tickets for a prin‐
       cipal  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 admin‐
       istrators remote root access to the host via Kerberos.

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


       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:



       This would allow either system administrator to log in to  these	 hosts
       using  their  Kerberos tickets instead of having to type the root pass‐
       word.  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.



       1985-2013, MIT

1.12.1								    K5LOGIN(5)

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