[root@linux1 ~]# cd /etc
[root@linux1 etc]# cat krb5.conf 
[logging]
 default = FILE:/var/log/krb5libs.log
 kdc = FILE:/var/log/krb5kdc.log
 admin_server = FILE:/var/log/kadmind.log

[libdefaults]
 default_realm = NSNET.COM
 dns_lookup_realm = false
 dns_lookup_kdc = false
 ticket_lifetime = 24h
 forwardable = yes

[realms]

 NSNET.COM = {
  admin_server = aspen.nsnet.com:749
  kdc = aspen.nsnet.com:88
  kdc = aspen
  kdc = aspen
 }


 NSNET = {
  kdc = aspen
 }

[domain_realm]
 .nsnet.com = NSNET.COM
 nsnet.com = NSNET.com
#[kdc]
# profile = /var/kerberos/krb5kdc/kdc.conf

[appdefaults]
 pam = {
   debug = false
   ticket_lifetime = 36000
   renew_lifetime = 36000
   forwardable = true
   krb4_convert = false
 }