NTP : Configure NTP Server2021/12/01 |
Configure NTP Server to provide time synchronization service to Clients.
If the computer that is an Active Directory Domain Controler, NTP Server feature has already been enabled automatically.
So the example follows is for computers to enable NTP Server feature in WorkGroup Environment. |
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[1] | Run PowerShell with Admin Privilege and Configure. |
Windows PowerShell Copyright (C) Microsoft Corporation. All rights reserved. # confirm current setting (follows are default settings) PS C:\Users\Administrator> Get-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\w32time\TimeProviders\NtpServer" AllowNonstandardModeCombinations : 1 ChainDisable : 0 ChainEntryTimeout : 16 ChainLoggingRate : 30 ChainMaxEntries : 128 ChainMaxHostEntries : 4 DllName : C:\Windows\system32\w32time.dll Enabled : 0 EventLogFlags : 0 InputProvider : 0 RequireSecureTimeSyncRequests : 0 PSPath : Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\w32 time\TimeProviders\NtpServer PSParentPath : Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\w32 time\TimeProviders PSChildName : NtpServer PSDrive : HKLM PSProvider : Microsoft.PowerShell.Core\Registry # enable NTP Server feature PS C:\Users\Administrator> Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\w32time\TimeProviders\NtpServer" -Name "Enabled" -Value 1 # set [AnnounceFlags] to 5 # number means # 0x00 : Not a time server # 0x01 : Always time server # 0x02 : Automatic time server # 0x04 : Always reliable time server # 0x08 : Automatic reliable time server PS C:\Users\Administrator> Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\services\W32Time\Config" -Name "AnnounceFlags" -Value 5 # restart Windows Time service PS C:\Users\Administrator> Restart-Service w32Time # if Windows Firewall is running, allow NTP port PS C:\Users\Administrator> New-NetFirewallRule ` -Name "NTP Server Port" ` -DisplayName "NTP Server Port" ` -Description 'Allow NTP Server Port' ` -Profile Any ` -Direction Inbound ` -Action Allow ` -Protocol UDP ` -Program Any ` -LocalAddress Any ` -LocalPort 123 |
[2] |
NTP Server Host also needs to synchronize time with other Hosts as an NTP Client.
Refer to here to Configure NTP Client. |
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