New-SPConfigurationDatabase : Timeout expired

We are doing a fresh installation of SharePoint server 2010 on a new farm using AutoSPInstaller which is getting failed with error message ” New-SPConfigurationDatabase : Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. At D:\SPInstall\SharepointInstall\AutoSPInstaller\AutoSPInstallerFunctions.ps1:..”. A summary of the solution is detailed below.

•    Symptom – A new SharePoint server was unable to synchronize with its SQL server backend.
•    Cause – The servers were both in a DMZ and were unable to properly communicate with the domain controllers in the secure network.

 
•    Resolution – You opened the necessary ports for authentication (listed in http://support.microsoft.com/kb/832017) in the firewall between the DMZ and secure network.