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Active Directory Cookbook by Robbie Allen

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3.12. Finding the Services a Domain Controller Is Advertising

Problem

You want to find the services a domain controller is advertising.

Solution

The following command will display the list of services a domain controller is advertising:

> dcdiag /v /s:<DomainControllerName> /test:advertising

You can also use nltest to get similar information:

> nltest /server:<DomainControllerName> /dsgetdc:<DomainName>

Discussion

The dcdiag /test:advertising command is a wrapper around the DsGetDcName method. DsGetDcName returns a structure called DOMAIN_CONTROLLER_INFO that contains the list of services a domain controller provides. Table 3-2 contains the possible values returned from this call.

Table 3-3. DOMAIN_CONTROLLER_INFO flags

Value

Description

DS_DS_FLAG

Directory server for the domain

DS_GC_FLAG

Global catalog server for the forest

DS_KDC_FLAG

Kerberos Key Distribution Center for the domain

DS_PDC_FLAG

Primary domain controller of the domain

DS_TIMESERV_FLAG

Time server for the domain

DS_WRITABLE_FLAG

Hosts a writable directory service

See Also

MSDN: DsGetDcName and MSDN: DOMAIN_CONTROLLER_INFO

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