Installing the NSS and PAM libraries

Ensure that the following NSS and PAM packages are installed: 

  nss-pam-ldapd-0.7.5-18.2.el6_4.x86_64.rpm 
  pam_krb5-2.3.11-9.el6.x86_64.rpm
Note: If you have a valid RHN subscription, run yum as shown in the following example: 
  yum install nss-pam-ldapd.x86_64 pam_krb5.x86_64