Hi all, I've an active directory domain with 10 sites connect ina a large WAN. Each site as its own domain controller. I wish that the DC of each site act like a reliable time source for the client of that site and that DC will syncronize with an external NTP server. How can I do this?

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Hello, I'd prefer that domain clients sync time with the PDC Emulator and that you configure the PDC to sync time with a reliable NTP server. To configure an NTP server: http://support.microsoft.com/kb/816042 To configure an NTP client: http://www.ehow.com/how_5981545_configure-windows-ntp-client.html This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator

By default in a domain environment, clients synch their time with the server that holds the PDC emulator FSMO. http://technet.microsoft.com/en-us/library/cc786897(WS.10).aspx If you would like to chage that, you will hav to reconfuge each client to use a reliable timesource. i would recommend configureing the local "reliable timesources" to fetch time from a central server to keep time synchronised over the entire domain (important for kerberos!) to configure the w32tm service, check these articles: http://technet.microsoft.com/nl-nl/library/cc773061(WS.10).aspx (general info on tim in domain) http://technet.microsoft.com/nl-nl/library/cc773263(WS.10).aspx (w32 tm utiity and registry settings that apply) In fact I would recommend reading through the w32tm documentation provided and carefully reconsider whether you need the changes you propose. After all, the default configuration has it's advantages and is very easy to implement!MCP/MCSA/MCTS/MCITP

The best way out would be Configure your pdc emulator to synch the time from the external NTP and that time will be carried forward to all the server with in the domain Also remember that time server follows hierarchy http://technet.microsoft.com/en-us/library/cc773013%28WS.10%29.aspx#w2k3tr_times_how_rrfo here is the best documentation provided by MShttp://www.virmansec.com/blogs/skhairuddin

Hi all, I've an active directory domain with 10 sites connect ina a large WAN. Each site as its own domain controller. I wish that the DC of each site act like a reliable time source for the client of that site and that DC will syncronize with an external NTP server. How can I do this? Hello, this is NOT possible. In a domain the time source is the DC having the PDCEmulator FSMO, all other DCs sync with that one and the workstations use an available DC, that way it is achieved that all machines are using the same time. Normally the DC that is used for authentication will also be used to sync the time, in your case the site DC. http://msmvps.com/blogs/mweber/archive/2010/06/27/time-configuration-in-a-windows-domain.aspxBest regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.