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Saturday, June 7, 2008

RIS cross-domain access

I had a requirement to initiate OS installs using RIS on Windows 2000 server when authenticating with cross-domain user accounts. In Windows Server 2003 this is a supported configuration, but I was pleasantly surprised that it worked from a 2003 domain to a trusting 2000 domain with a 2000 RIS server.

This test was successfully completed in a simple test environment authenticating with a cross-domain user account in a different forest than the RIS server computer account:

  • XP workstation, member of a 2003 forest/domain
  • 2000 server, which was a DC and RIS server of a 2000 domain
  • The 2000 forest trusts the 2003 forest, with a one-way external NTLM trust
  • NTFS permissions set such that the cross-domain user account has access to the RIS filesystem.

The following protocols were in use between the RIS server and the cross-domain DC:

  • TCP RPC EndPoint Mapper 135
  • TCP/UDP RPC Ephemeral ports above 1023
  • TCP NetBIOS Session Setup 139
  • TCP SMB 445
  • TCP Microsoft Directory Services 445
  • UDP Kerberos 88
  • ICMP


Wayne's World of IT (WWoIT), Copyright 2008 Wayne Martin.

Posted by Wayne Martin at 12:06 PM ♦ DiggIt! ♦ Add to del.icio.us ♦
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I’ve worked in IT for over 20 years, and I know just about enough to realise that I don’t know very much.