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.K5LOGIN(5)                                                        .K5LOGIN(5)



NAME
       .k5identity - Kerberos V5 client principal selection rules

DESCRIPTION
       The .k5identity file, which resides in a user's home directory, contains a list of rules for selecting a client
       principals based on the server being accessed.  These rules are used to choose a credential  cache  within  the
       cache collection when possible.

       Blank lines and lines beginning with '#' are ignored.  Each line has the form:

              principal field=value ...

       If  the  server principal meets all of the field constraints, then principal is chosen as the client principal.
       The following fields are recognized:

       realm  If the realm of the server principal is known, it is matched against value, which may be a pattern using
              shell wildcards.  For host-based server principals, the realm will generally only be known if there is a
              domain_realm section in krb5.conf with a mapping for the hostname.

       service
              If the server principal is a host-based principal, its service component is matched against value, which
              may be a pattern using shell wildcards.

       host   If the server principal is a host-based principal, its hostname component is converted to lower case and
              matched against value, which may be a pattern using shell wildcards.

       If the server principal matches the constraints of multiple lines in the .k5identity file, the  principal  from
       the  first matching line is used.  If no line matches, credentials will be selected some other way, such as the
       realm heuristic or the current primary cache.

EXAMPLE
       The following example .k5identity file selects the client principal aliceATKRBTEST.COM if the  server  principal
       is  within  that  realm, the principal alice/rootATEXAMPLE.COM if the server host is within a servers subdomain,
       and the principal alice/mailATEXAMPLE.COM when accessing the IMAP service on mail.example.com.

              aliceATKRBTEST.COM       realm=KRBTEST.COM
              alice/rootATEXAMPLE.COM  host=*.servers.example.com
              alice/mailATEXAMPLE.COM  host=mail.example.com service=imap

SEE ALSO
       kerberos(1), krb5.conf(5)



                                                                   .K5LOGIN(5)