To configure a Windows NTP Network Time Server

Time synchronization on your computer is very important in modern computer networks, precision and time synchronization in many applications, particularly time-critical transactions. Imagine buying a ticket, only to be told at the airport that the ticket was bought twice because it was later on a computer with a slower clock sold!

Modern computers internal clocks called Real Time Clock chips (RTC) must provide the date and time information. ThisChips in battery, so that even during a power outage, they can get the time to keep, but personal computers are not insured for the perfect watch. Its design is optimized for mass production and low cost, rather than by exact time.

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For many applications this is very appropriate, though often machines need time to communicate with other computers on the network and when computers are not in tune with each other problems arise as the network files are synchronizedor in some environments even fraud!

Microsoft Windows 2000 includes a time synchronization tool in the operating system called Windows Time (W32Time.exe) that are configured as a network server can be used to build. Microsoft and others are strongly advised to configure a time server with a hardware source rather than on the Internet, where there is no authentication.

If you need to configure the Windows Time service to use the internal hardware clock, then first check thatw32time is in the list of system services in the registry to verify:

Click Start, Run and type regedit and click OK.

Click the following registry entry:

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32Time

We strongly recommend that you back up the registry can cause serious problems if you edit the registry, the changes to the registry at your own risk.

At the startup configuration for an internal clock, click onthe following subkey:

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeParameters

In the right pane of ReliableTimeSource mouse, then click Edit.

Edit in DWORD Value, type 1 in the Value field, then click OK

Close the Registry Editor

To start the Windows Time Service click Start, Run (or alternatively the system prompt).

Type: net stop w32time & & net start w32time

Then press Enter.

To reset the local computers'Time, following on all computers except the time server which must not be synchronized with itself:

w32tm-s

Configured to use the Windows Time service to an external source, click Start, Run and type regedit then click OK.

Locate the following subkey:

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeParameters

In the right pane, right-click Type then click Modify, in edit mode value of the type NTP in the Value data box, click OK.

Now, inReliableTimeSource click the right pane, then click Edit.

In the Edit DWORD Value, type 0 and click OK.

Right click NtpServer in the right pane, click Edit.

In Edit Value, type the Domain Name System (DNS), each DNS must be unique.

Now click on OK.

For Windows 2000 Service Pack 4, you must configure the time correction settings to do this are:

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeParameters

In the right paneRight on MaxAllowedClockErrInSecs, then change the Edit DWORD Value, type a time in seconds to get the maximum number of seconds between the local clock and the time from NTP servers to new, valuable time.

Click OK.

To find the polling intervals:

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeParameters

In the right pane, right-click the period, and then click Edit.

In the Edit DWORD Value, type24 OK

Close the Registry Editor

Click Start, then Run and type the following and press Enter:

Net stop w32time & & net start w32time

To reset the local computer time, the following on all computers except the time server which must not be synchronized with itself:

Network Time Protocol (NTP) is an Internet protocol for the transfer of accurate time using time together and provides information so that you can get a precise time

To enableNetwork Time Protocol, and click NTPServer:

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeTimeProvidersNtpServer

In the right pane, click Enabled, and then click Edit.

Edit DWORD Value, type a value below, then click OK.

Now you go back and click on

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeParametersNtpServer

Pane, right-click NtpServer, then change the Edit DWORD Value Type DataPane, right-click NtpServer, and then change the Edit DWORD Value data, type the Domain Name System (DNS), each DNS must be unique and 0x1 must be attached to the end of each DNS name otherwise changes are not effective.

Now click on OK.

Locate and click on the following

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32TimeTimeProvidersNtpClientSpecialPollInterval

In the right pane of SpecialPollInterval mouse, then click Edit.

In EditDWORD Value, under Value, enter the number of seconds to click for each poll, ie 900 will poll every 15 minutes, and then click OK.

To configure the time correction settings, locate:

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32Timeconfig

Pane, right-click MaxPosPhaseCorrection, then change the Edit DWORD Value box, under Base, click Decimal value, enter a time in seconds as 3600 (one hour), then click OK.

Now go back andClick:

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesW32Timeconfig

Pane, right-click MaxNegPhaseCorrection, and then click Edit.

In the Edit DWORD Value box, under Base, click Decimal, under Value data type the time in seconds that you want to survey as 3600 (polls in 1 hour)

Close the Registry Editor

Now restart the Windows Time service, click Start, then Run (or alternatively the system command prompt) and type:

net stop w32time & & net startw32time

And one on each computer, with the exception of the server time:

W32tm / s

And this is your time server should be operated.

To configure a Windows NTP Network Time Server