Depending upon the domain controller you are using, do one of the following:
Configure valid forward and reverse DNS mapping for the computer systems in your domain.
For example OpenSSO Enterprise and the Kerberos Domain Controller must have proper A (IP-Name lookup) and PTR (Reverse IP-Address lookup) records in the DNS database.
If you use the /etc/hosts file instead of using DNS, all host names point to real, network-accessible IP addresses.
For example, if the IP address for host1.example.org is 188.8.131.52, then the /etc/hosts file should contain the following entries:
127.0.0.1 localhost openSSOhost 184.108.40.206 openSSOhost.example.com openSSOhost
A Window XP workstation must be configured to work with a UNIX Kerberos Domain Controller or Windows 2003 Domain Controller. You can add the workstation to the Kerberos or Windows Domain Controller when installing Windows XP, or when modifying the network configuration that already exists on the Window XP workstation.