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Enables Windows Server to server NTP to clients on a network and configures the upstream time server to time.windows.com. Also creates a firewall rule to allows incoming connections to UDP port 123 for NTP clients.
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| Set-TimeZone -Name 'Eastern Standard Time' | |
| Set-Service -Name W32Time -StartupType Automatic | |
| Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpServer' -Name 'Enabled' -Value 1 -Force | |
| Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\W32Time\Config' -Name 'AnnounceFlags' -Value 0xA -Force | |
| Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpClient' -Name 'Enabled' -Value 1 -Force | |
| Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpClient' -Name 'SpecialPollInterval' -Value 300 -Force | |
| Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\W32Time\Parameters' -Name 'Type' -Value 'NTP' -Force | |
| Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\W32Time\Parameters' -Name 'NtpServer' -Value 'time.windows.com,0x8' -Force | |
| Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\W32Time\Config' -Name 'MaxPosPhaseCorrection' -Value 1800 -Force | |
| Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\W32Time\Config' -Name 'MaxNegPhaseCorrection' -Value 1800 -Force | |
| 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 | |
| Restart-Service -Name W32Time -Force |
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