Where is RODC used?

A Read-Only Domain Controller (RODC) is a new type of domain controller in Windows Server 2008. Its main purpose is to improve security in office branches.

How does a RODC work?

If the password is cached, the RODC will authenticate the user account locally. If the user’s password is not cached, then the RODC forwards the authentication request to a writable Windows Server 2008 Domain Controller which in turn authenticates the account and passes the authenticated request back to the RODC.

What are the reasons to create an RODC?

The main reason to introduce RODCs is to allow a Domain Controller to exist in a remote office that may have few users or less physical security as well network security requirements while not sacrificing performance for the remote location.

Should I use RODC?

The main reason for using an RODC is mainly for security purposes, while also providing domain resiliency at remote offices. If a remote office has poor physical security or is only serving a small number of very non-IT minded staff, there is no good reason to have a fully writable domain controller onsite.

What are the benefits of using an RODC in a branch office?

The main benefits of an RODC are as below:
  • Reduced security risk to a writable copy of Active Directory.
  • Better logon times compared to authenticating across a WAN link.
  • Better access to the authentication resource on the network.
  • Better performance of directory-enabled applications.

Which of the given below functionality is supported by RODC?

An RODC only supports unidirectional replication, meaning that it solely performs inbound replication. … Any changes or corruption that a malicious user might make at branch locations cannot replicate from the RODC to the rest of the forest.

What is the difference between DC and RODC?

The difference is that a DC holds writable files containing sensitive data, such as passwords, about all users and computers throughout the domain. … An RODC, on the other hand, stores read-only data about a subset of users and computers in the domain which it has been authorized to authenticate.

What is RODC password Replication Group?

The Denied RODC Password Replication Group is a domain local group that specifies users and groups whose passwords cannot be cached on RODCs. By default, this group contains the following highly-privileged users and groups: The Enterprise Domain Controllers group. The Enterprise Read-Only Domain Controllers group.

What are the Fsmo roles?

The 5 FSMO roles are:
  • Schema Master – one per forest.
  • Domain Naming Master – one per forest.
  • Relative ID (RID) Master – one per domain.
  • Primary Domain Controller (PDC) Emulator – one per domain.
  • Infrastructure Master – one per domain.

How does RODC improve an organization’s security?

The concept is to make Active Directory information available in remote offices, providing faster access to resources and authentication while keeping the server as secure as possible in case of lessened physical security in the remote location.

What are the two basic requirements before you deploy a RODC?

Deploying an RODC requires the following:
  • Availability of credentials of a member of the Domain Admins for the domain.
  • A forest functional level of Windows Server 2003 or later.
  • At least one writable domain controller running Windows Server 2008 or later installed in the domain.

How can you tell DC from RODC?

To find RODC, run nltest /dclist:contoso.com, both writable and RODCs are returned. 2. RODC can be used for user authentication by caching users/computers password.

How do I know if a server is RODC?

In ‘Active Directory Users And Computers’ browse to the RODC’s computer object the DC Type should contain say ReadOnly if it is a RODC. The computer object properties on tab ‘Managed by’ should also show what type of DC it is.

Which forest functional level is required to deploy a RODC?

The domain and forest functional level must be at the Windows Server 2003 functional level or higher.

What is filtered attribute set?

Filtered Attribute Set (FAS) is the set of attributes NOT replicated to a Read-Only Domain Controller (RODC).

How do you convert a RODC to a writable DC?

Unfortunately no, there is no way to convert from an RODC to a RWDC (read/write DC) or vice versa without demoting and promoting them again. The answer is no you need to demote/promote the server to promote it again as RWDC.To demote RODC refer below link.

What is a global catalog used for?

The global catalog (GC) allows users and applications to find objects in an Active Directory domain tree, given one or more attributes of the target object. The global catalog contains a partial replica of every naming context in the directory.

How many RODCs are in a domain?

Here’s another tidbit, you should not have more than one RODC in any site.

How do I find my RODC password Replication Policy?

Log on to SERVER01 as Administrator. Open the Active Directory Users And Computers snap-in, expand the domain, and select the Users container. Examine the default membership of the Allowed RODC Password Replication Group. Open the properties of the Denied RODC Password Replication Group.

How do you convert ADC to RODC?

You need to demote RODC to member server using dcpromo or dcpromo /forceremoval (requires metadata cleanup too) & then promote back to additional domain controller, there is no direct way to convert RODC to ADC.