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 princi-
pal is chosen as the client principal. The following fields are recog-
nized:
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
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 pri-
mary cache.
EXAMPLE
The following example .k5identity file selects the client principal al-
ice@KRBTEST.COM if the server principal is within that realm, the prin-
cipal alice/root@EXAMPLE.COM if the server host is within a servers sub-
domain, 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
1985-2024, MIT
1.21.3 K5IDENTITY(5)
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