K5IDENTITY(5)							   MIT Kerberos 						     K5IDENTITY(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(5) with a  map-
	      ping 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 alice@KRBTEST.COM if the server principal is within that realm, the
       principal alice/root@EXAMPLE.COM if the server host is within a servers subdomain, and the principal alice/mail@EXAMPLE.COM when  accessing
       the IMAP service on mail.example.com:

	      alice@KRBTEST.COM       realm=KRBTEST.COM
	      alice/root@EXAMPLE.COM  host=*.servers.example.com
	      alice/mail@EXAMPLE.COM  host=mail.example.com service=imap

SEE ALSO

       kerberos(1), krb5.conf(5)

AUTHOR

       MIT

COPYRIGHT

       1985-2013, MIT

1.11.3																     K5IDENTITY(5)