warn.conf(4) File Formats warn.conf(4)NAME
warn.conf - Kerberos warning configuration file
SYNOPSIS
/etc/krb5/warn.conf
DESCRIPTION
The warn.conf file contains configuration information specifying how users will be warned by the ktkt_warnd daemon about ticket expiration.
In addition, this file can be used to auto-renew the user's Ticket-Granting Ticket (TGT) instead of warning the user. Credential expiration
warnings and auto-renew results are sent, by means of syslog, to auth.notice.
Each Kerberos client host must have a warn.conf file in order for users on that host to get Kerberos warnings from the client. Entries in
the warn.conf file must have the following format:
principal [renew[:opt1,...optN]] syslog|terminal time
or:
principal [renew[:opt1,...optN]] mail time [email address]
principal Specifies the principal name to be warned. The asterisk (*) wildcard can be used to specify groups of principals.
renew Automatically renew the credentials (TGT) until renewable lifetime expires. This is equivalent to the user running kinit
-R.
The renew options include:
log-success Log the result of the renew attempt on success using the specified method (syslog|terminal|mail).
log-failure Log the result of the renew attempt on failure using the specified method (syslog|terminal|mail). Some
renew failure conditions are: TGT renewable lifetime has expired, the KDCs are unavailable, or the cred
cache file has been removed.
log Same as specifing both log-success and log-failure.
Note -
If no log options are given, no logging is done.
syslog Sends the warnings to the system's syslog. Depending on the /etc/syslog.conf file, syslog entries are written to the
/var/adm/messages file and/or displayed on the terminal.
terminal Sends the warnings to display on the terminal.
mail Sends the warnings as email to the address specified by email_address.
time Specifies how much time before the TGT expires when a warning should be sent. The default time value is seconds, but you
can specify h (hours) and m (minutes) after the number to specify other time values.
email_address Specifies the email address at which to send the warnings. This field must be specified only with the mail field.
EXAMPLES
Example 1 Specifying Warnings
The following warn.conf entry
* syslog 5m
specifies that warnings will be sent to the syslog five minutes before the expiration of the TGT for all principals. The form of the mes-
sage is:
jdb@ACME.COM: your kerberos credentials expire in 5 minutes
Example 2 Specifying Renewal
The following warn.conf entry:
* renew:log terminal 30m
...specifies that renew results will be sent to the user's terminal 30 minutes before the expiration of the TGT for all principals. The
form of the message (on renew success) is:
myname@ACME.COM: your kerberos credentials have been renewed
FILES
/usr/lib/krb5/ktkt_warnd Kerberos warning daemon
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
SEE ALSO kinit(1), kdestroy(1), ktkt_warnd(1M), syslog.conf(4), utmpx(4), attributes(5), kerberos(5), pam_krb5(5)NOTES
The auto-renew of the TGT is attempted only if the user is logged-in, as determined by examining utmpx(4).
SunOS 5.11 30 Mar 2005 warn.conf(4)
Check Out this Related Man Page
KINIT(1) BSD General Commands Manual KINIT(1)NAME
kinit -- acquire initial tickets
SYNOPSIS
kinit [--afslog] [-c cachename | --cache=cachename] [-f | --no-forwardable] [-t keytabname | --keytab=keytabname] [-l time | --lifetime=time]
[-p | --proxiable] [-R | --renew] [--renewable] [-r time | --renewable-life=time] [-S principal | --server=principal] [-s time |
--start-time=time] [-k | --use-keytab] [-v | --validate] [-e enctypes | --enctypes=enctypes] [-a addresses |
--extra-addresses=addresses] [--password-file=filename] [--fcache-version=version-number] [-A | --no-addresses] [--anonymous]
[--enterprise] [--version] [--help] [principal [command]]
DESCRIPTION
kinit is used to authenticate to the Kerberos server as principal, or if none is given, a system generated default (typically your login name
at the default realm), and acquire a ticket granting ticket that can later be used to obtain tickets for other services.
Supported options:
-c cachename --cache=cachename
The credentials cache to put the acquired ticket in, if other than default.
-f --no-forwardable
Get ticket that can be forwarded to another host, or if the negative flags use, don't get a forwardable flag.
-t keytabname, --keytab=keytabname
Don't ask for a password, but instead get the key from the specified keytab.
-l time, --lifetime=time
Specifies the lifetime of the ticket. The argument can either be in seconds, or a more human readable string like '1h'.
-p, --proxiable
Request tickets with the proxiable flag set.
-R, --renew
Try to renew ticket. The ticket must have the 'renewable' flag set, and must not be expired.
--renewable
The same as --renewable-life, with an infinite time.
-r time, --renewable-life=time
The max renewable ticket life.
-S principal, --server=principal
Get a ticket for a service other than krbtgt/LOCAL.REALM.
-s time, --start-time=time
Obtain a ticket that starts to be valid time (which can really be a generic time specification, like '1h') seconds into the future.
-k, --use-keytab
The same as --keytab, but with the default keytab name (normally FILE:/etc/krb5.keytab).
-v, --validate
Try to validate an invalid ticket.
-e, --enctypes=enctypes
Request tickets with this particular enctype.
--password-file=filename
read the password from the first line of filename. If the filename is STDIN, the password will be read from the standard input.
--fcache-version=version-number
Create a credentials cache of version version-number.
-a, --extra-addresses=enctypes
Adds a set of addresses that will, in addition to the systems local addresses, be put in the ticket. This can be useful if all
addresses a client can use can't be automatically figured out. One such example is if the client is behind a firewall. Also set-
table via libdefaults/extra_addresses in krb5.conf(5).
-A, --no-addresses
Request a ticket with no addresses.
--anonymous
Request an anonymous ticket (which means that the ticket will be issued to an anonymous principal, typically ``anonymous@REALM'').
--enterprise
Parse principal as a enterprise (KRB5-NT-ENTERPRISE) name. Enterprise names are email like principals that are stored in the name
part of the principal, and since there are two @ characters the parser needs to know that the first is not a realm. An example of an
enterprise name is ``lha@e.kth.se@KTH.SE'', and this option is usually used with canonicalize so that the principal returned from the
KDC will typically be the real principal name.
--afslog
Gets AFS tickets, converts them to version 4 format, and stores them in the kernel. Only useful if you have AFS.
The forwardable, proxiable, ticket_life, and renewable_life options can be set to a default value from the appdefaults section in krb5.conf,
see krb5_appdefault(3).
If a command is given, kinit will set up new credentials caches, and AFS PAG, and then run the given command. When it finishes the creden-
tials will be removed.
ENVIRONMENT
KRB5CCNAME
Specifies the default credentials cache.
KRB5_CONFIG
The file name of krb5.conf, the default being /etc/krb5.conf.
KRBTKFILE
Specifies the Kerberos 4 ticket file to store version 4 tickets in.
SEE ALSO kdestroy(1), klist(1), krb5_appdefault(3), krb5.conf(5)HEIMDAL April 25, 2006 HEIMDAL