RODC clients in DMZ query

Hi all,
Quick query regarding connectivity requirements for servers in a DMZ that use an RODC for authentication and DNS resolution.
Are there any requirements for these clients to have *any* connectivity with the internal RWDC's inside the perimeter network?  Could firewall rules be set up so that these clients can only connect to the RODCs in the DMZ (for authentication and DNS)
and tighten up Firewall access to the RWDCs to restrict them to only be accessible by the RODCs?
Thanks,
Martin

Thank you Ahmed, that's what I thought also, however in the back of my mind I recall reading *somewhere* that in certain instances, for certain tasks (referrals of some kind from the RODC), clients would require to connect to the RWDCs.
As I am locking down a DMZ environment, I don't want to be preventing any functionality which may be required under certain, non obvious or evident conditions.
Keep in mind some task strictly needs direct access to RWDC rather than RODC. Such as:
Pasword Change: Clients with Windows Vista and above can directly change their passwords with RODC. The the RODC transfer that to a RWDC. Clients with Windows XP and below (unpatched) need direct access to RWDC. Actually RODC does not do
anything for them.
Time Synchronization: if a client tries to synchronize its time with RODC it depends whether the RODC has cached the computer accounts password or not. if YES the RODC will be able to sync the client time, otherwise a RWDC must be contacted
using a chaining table.
Mahdi Tehrani   |  
  |  
www.mahditehrani.ir
Please click on Propose As Answer or
to mark this post as
and helpful for other people.
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    Mahdi Tehrani   |  
      |  
    www.mahditehrani.ir
    Please click on Propose As Answer or to mark this post as
    and helpful for other people.
    This posting is provided AS-IS with no warranties, and confers no rights.
    How to query members of 'Local Administrators' group in all computers?

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