Procedure 4.1. To configure client authentication on AIX:

1. Ensure that NTP is correctly configured and enabled, and that time is synchronized between the client and the Red Hat Enterprise IPA server.

2. Edit the krb5.conf file as follows to configure Kerberos:

   [libdefaults]
   default_realm = EXAMPLE.COM
   [realms]
   EXAMPLE.COM = {
   	kdc = ipaserver.example.com:88
   	admin_server = ipaserver.example.com:749
   	}
   [domain_realm]
   .example.com = EXAMPLE.COM
   example.com = EXAMPLE.COM
   
   [appdefaults]
   kinit = {
   	forwardable = true
   	}