Windows Server 2003 - SNTP and NTP settings : server, 2003, ntp, windows

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11.09.2007 at 01:35PM PST, ID: 22951251

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6.8

Windows Server 2003 - SNTP and NTP settings

Zones: Windows 2000 Server, Windows 2003 Server, Microsoft Windows Operating Systems

Tags: server, 2003, ntp, windows

Hey everyone,

I've got a problem with the network side not allowing port 123 to open for me. I'm going to configure my laptop to obtain the time from the Navy's clock when I go home, and when I return to work, I'd like the NTP server to query my laptop for the time.

I've got a problem though...net time \\mycomputer /setsntp
doesn't want to work.

Errors out with "System error 53 has occurred. This network path was not found."

Is this even possible?

Thanks a lot,
inverted

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Question Stats

Zone: OS

Question Asked By: inverted_2000

Solution Provided By: ChiefIT

Participating Experts: 2

Solution Grade: A

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11.09.2007 at 02:04PM PST, ID: 20253515

Rank: Guru

ChiefIT:

You want to be on the same time as the Navy's clock.

The way the time service works is the DC gets the time from an outside source. Then the domain controller raises a flag to tell all the clients on the local domain, "I have time".

You can syncronize your domain controller to an outside time server and pass this down to clients. This is called an authoritative time server. The Navy's time server is probably behind a firewall and you can't reach it. Let me provide you with a link to set up an authoritative time server. If you don't have a domain controller at home. Then you can use the free utility called "symtime" to synch up to an outside time server for accurate time.

http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/Q_22799695.html

11.10.2007 at 10:24AM PST, ID: 20256556

Rank: Guru

65td:

Is there a router on the network that gets it's time remotely and acts as an NTP source on the network?

11.10.2007 at 07:56PM PST, ID: 20258035

inverted_2000:

Yup...you can see it here:
http://tycho.usno.navy.mil/ntp.html

MS KB:
http://support.microsoft.com/kb/262680

I want my laptop to sync with the Navy OTC server, then take the laptop to work and have the DC sync with my laptop.

Should I edit the registry on the DC to point to an "outside" source which is my laptop...instead of the entry now which is time.microsoft.com...or something close to that?

Thanks
inverted

11.11.2007 at 11:51PM PST, ID: 20262657

Rank: Guru

ChiefIT:

You could use the symtime program to link up and sync your DC to the Navy time server. Then, raise the flag on your DC that says "I am the time server for this network". If you do that, you won't have to transport your laptop back and forth from work and home. Instead your DC will syncronize time with the Navy time server. These Navy Time Servers look exposed to the outside world for public useage.

11.12.2007 at 05:28AM PST, ID: 20263717

inverted_2000:

My boss wants it done with the laptop, because he can't get approval for the ports to be opened on the firewall.

Kind of silly, I know, but that's what he's wanting (o:

11.12.2007 at 05:33AM PST, ID: 20263747

inverted_2000:

also...what is the "symtime" program?

and would I simply edit the registry of the DC to point to laptop...and if so, how do I allow the laptop to respond to the NTP request?

Thanks,

11.12.2007 at 12:19PM PST, ID: 20266913

Rank: Guru

ChiefIT:

Symtime is a small program designed by symetricom. Symetricome manufactures time servers. Symtime is a program that is used to communicate with the time servers via a URL. Symtime also comes default with some military time servers. The little utility can adjust your system clock automatically or by manually synchronizing with the remote time server. Then you can pass that down to PCs within the domain. By default, there is one Navy time server in the list of time servers that symtime can synchronize with. That doesn't mean you can enter other Navy time servers in the list of time servers provided.

Since you showed a list of time servers that belong to the Navy and they appear to be sending time out publicly. Symtime should allow you to sync with the exact time server you with to sync with.

In your case, I think Symtime will work well for you. You can syncronize with the Navy's time server then pass it down to the clients within the domain and you will not have to transport a laptop back and forth to do so.

Once again, here is a link to syncronize with time servers outside the domain, then pass it to computers within your domain by using the domain controller. I understand your wish to syncronize by using a laptop. But I have to ask why, when you can syncronize over the network and pass it down to your clients?

http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/Q_22799695.htmlback to top

Accepted Solution

11.12.2007 at 12:41PM PST, ID: 20267099

inverted_2000:

Port 123 is blocked on the firewall and my Cisco guy isn't allowed to open it for my boss...it's all about how can tell how what to do.

This is why I can't sync with an outside time server.

To bring in house the accurate time, I will need the time server to be a portable device, such as my laptop, and the NTP DC will have to be pointed to it to receive the time.

So does it all sound like it will work with Symtime and my topology???

THanks again

11.12.2007 at 12:41PM PST, ID: 20267107

Rank: Guru

ChiefIT:

OOPs let me redo that link:

http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/Q_22799695.html

To add to the enhancement of time throughout the domain, may I suggest an auditting solution that symentricom also provides. This is just bonus information>
Symetrictom also has a utility called "Domain Time II". It will search computers and tell you how their time differs from the authortitative time server. This is pretty handy when you got to your boss and say, "All servers and computers have this time". Just search the symetricom web page for that utility as well.

I work on an oceanographic ship. Time is very, very, important for us to syncronize our instruments like windspeed, wind direction, wave height, water temperature, ocean ping GPS, air temperature, barometric pressure, ship's location, ship's bearing, and ocean depth all into one comprehensive package. All of our sensors have a time stamp. If the time stamps are off, our data will not reflect the true nature of the sensor data snapshot. Symtime, Domain Time II, and our own time servers are what we use.

11.12.2007 at 01:30PM PST, ID: 20267536

inverted_2000:

Nice...that's very interesting work that you do for sure.

I appreciate all of your help with all of this. I don't think I'll have an issue from here on out.

Take care,
inverted

ChiefIT

11.13.2007 at 07:08AM PST, ID: 20271956

Sounds like you got it to work through the firewall. I think Symtime takes a time tick off of port 80, the http port. So, it works through firewalls and across the WAN.

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