First of all I would like to thanks to all of you for your responces..
I am using LDAP Domain.. In one server I have installed everything example:- DHCP, DNS, LDAP, and Samba for testing purpose.. (And also please let me know is this a good idea to install all the servers in one Machine in the real network?)
Is Redhat 9 Distribution is good for this Servers?
Thanks and Regards,