Details
While Kerberos can be a security enhancement, if the local site is not currently using Kerberos then there is no need to have the Kerberos TGT expiration warning enabled.
Solution
To disable the Kerberos TGT expiration warning, run the following command-
svcadm disable svc:/network/security/ktkt_warn
Supportive Information
The following resource is also helpful.
This control applies to the following type of system Unix.