Hi Are there any docs that explain what these keys are? eg: what does AnnounceFlags do, or the others Article 816042 does not explain what these means. I have this working in ISA 2004 to sync externally and then serve requests from the local PDCs. Thanks -----Original Message----- From: Amy Babinchak [mailto:amy@xxxxxxxxxxxxxxxxxxxxxxxxxx] Sent: Thursday, September 30, 2004 6:20 AM To: [ISAserver.org Discussion List] Subject: [isalist] RE: SOLVED! RE: Time Sync Problem http://www.ISAserver.org In addition to the packet filter that you have you will need to edit the registry to be able to sync with an external source. An long excerpt from an even longer KB article: Configuring the Windows Time service to use an external time source To configure an internal time server to synchronize with an external time source, follow these steps: Change the server type to NTP. To do this, follow these steps: Click Start, click Run, type regedit, and then click OK. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Parameters\ Type In the right pane, right-click Type, and then click Modify. In Edit Value, type NTP in the Value data box, and then click OK. Set AnnounceFlags to 5. To do this, follow these steps: Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config\Anno unceFlags In the right pane, right-click AnnounceFlags, and then click Modify. In Edit DWORD Value, type 5 in the Value data box, and then click OK. Enable NTPServer. To do this, follow these steps: Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProvide rs\NtpServer\Enabled In the right pane, right-click Enabled, and then click Modify. In Edit DWORD Value, type 1 in the Value data box, and then click OK. Specify the time sources. To do this, follow these steps: Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Parameters\ NtpServer In the right pane, right-click NtpServer, and then click Modify. In Edit Value, type Peers in the Value data box, and then click OK. Note Peers is a placeholder for a space-delimited list of peers from which your computer obtains time stamps. Each DNS name that is listed must be unique. You must append ,0x1 to the end of each DNS name. If you do not append ,0x1 to the end of each DNS name, the changes made in step 5 will not take effect. Select the poll interval. To do this, follow these steps: Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProvide rs\NtpClient\SpecialPollInterval In the right pane, right-click SpecialPollInterval, and then click Modify. In Edit DWORD Value, type TimeInSeconds in the Value data box, and then click OK. Note TimeInSeconds is a placeholder for the number of seconds that you want between each poll. A recommended value is 384. This value configures the Time Server to poll every 15 minutes. Configure the time correction settings. To do this, follow these steps: Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config\MaxP osPhaseCorrection In the right pane, right-click MaxPosPhaseCorrection, and then click Modify. In Edit DWORD Value, select Decimal in the Base box. In Edit DWORD Value, type TimeInSeconds in the Value data box, and then click OK. Note TimeInSeconds is a placeholder for a reasonable value, such as 1 hour (3600) or 30 minutes (1800). The value that you select will depend upon the poll interval, network condition, and external time source. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config\MaxN egPhaseCorrection In the right pane, right-click MaxNegPhaseCorrection, and then click Modify. In Edit DWORD Value, select Decimal in the Basebox. In Edit DWORD Value, type TimeInSeconds in the Value data box, and then click OK. Note TimeInSeconds is a placeholder for a reasonable value, such as 1 hour (3600) or 30 minutes (1800). The value that you select will depend upon the poll interval, network condition, and external time source. Amy -----Original Message----- From: Peter W. Merner [mailto:pmerner@xxxxxxxxxxxxx] Sent: Wednesday, September 29, 2004 1:14 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: SOLVED! RE: Time Sync Problem http://www.ISAserver.org Gather you have a working ntp now. Does it differ from mine, maybe I should copy whatever works for you. Email disclaimer: This email and any attachments are confidential. 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