Samba

Firstly install the samba server and client

yum install samba samba-client

Once the required applicatons are installed we can add the computer to the domain by running authconfig.

authconfig

Under the User infromation select Use Winbind
Under Authentication select Use Winbind Authentication
Under the Authentication column the "Use MD5 Password" and "Use Shadow Passwords" should be automatically select. Leave them selected.

File:auth-config.jpg

Security Model is ads
Domain is NETBIOS domain name
Domain Controllers is the name of a Domain Controller
ADS Realm is DNS (FQDN) domain name
by default the /bin/false is selected.

File:winbind.jpg

Select Join Domain.
Select Ok.