Configure Domain Controller to synchronize time with external NTP server

Introduction

Configure Domain Controller to synchronize time with external NTP server (dk.pool.ntp.org)
UDP port 123 must be open on firewall to allow NTP traffic in and out from this DC.
From DC command prompt type “telnet portquiz.net 123” to test if the port 123 traffic can go out.

Logon to Domain Controller (with PDC role) with Administrator account and open elevated command prompt.

If you have multiple domain controller and don’t know which DC holds PDC role then use following command:

netdom /query fsmo

Configure external time sources

w32tm /config /reliable:yes /syncfromflags:manual /manualpeerlist:dk.pool.ntp.org

restart w32 time server, now DC should synchronize time with the ntp time servers.

net stop w32time && net start w32time
  • Check the Event Log on the server

w32tm sync commands:

Force synchronizing the time asap

w32tm /resync /nowait
 Check NTP configuration
w32tm /query /configuration
 Check NTP status
w32tm /query /status

Display time source

w32tm /query /peers

Display time between Domain Controllers

w32tm /monitor

Force domain computers to synchronize the time with the DC; use elevated command prompt

w32tm /config /syncfromflags:domhier /update
net stop w32time && net start w32time

Following commands will reset the time service to default.

net stop w32time
w32tm /unregister
w32tm /register
net start w32time

eLEET ?

Leet (or “1337“), also known as eleet or leetspeak, is an alternative alphabet for the English language that is used primarily on the Internet. It uses various combinations of ASCII characters to replace Latinate letters. For example, leet spellings of the word leet include 1337 and l33t; eleet may be spelled 31337 or 3l33t.

The term leet is derived from the word elite. The leet alphabet is a specialized form of symbolic writing. Leet may also be considered a substitution cipher, although many dialects or linguistic varieties exist in different online communities. The term leet is also used as an adjective to describe formidable prowess or accomplishment, especially in the fields of online gaming and in its original usage – computer hacking.