Unable to authenticate in LDAP RHEL 6.0

Hi there,

I run a lab of around 20 systems. I have setup my LDAP server and LDAP clients. But when I try to log on to other cleint machines from a client machine, the error shows that "Permission Denied". On the other hand, if I login onto server from any client machine, the communication takes place.
Please help me in this regard.

Thanks,

Are you using sssd? How are you connecting to the servers, ssh? Does LDAP authentication work on any client machine? Do all users fail or some? Have you checked /var/log/secure on the failing machine? If so paste the relevant entries of the logs. Do you have logging enabled on the LDAP server?