Network Time Protocol, used to synchronize clocks on the Internet.

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1answer
897 views

Computer clock drifts on standby. Can I make Windows synchronize time on every wakeup?

My Dell Vostro 1720 laptop's clock drifts when waking from standby mode (even by five minutes sometimes). This is really annoying and sometimes dangerous. I tried decreasing the Windows time sync ...
0
votes
3answers
1k views

Using nc (netcat) to emulate NTP server response

I want to test some security on an NTP client developed in-house and would like to use netcat to do it. I have packets captured with Wireshark from previous NTP exchanges that I tried to feed to the ...
5
votes
2answers
16k views

How to synchronize to a NTP server on Windows XP?

My Windows XP doesn't have the synchronization tab under Control Panel > Date and Time settings. I tried to change the related registry settings, and it worked only for my Windows 7. What else should ...
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vote
2answers
936 views

Ubuntu time issues

I am having a tough time getting my Ubuntu Virtual Machine to display the proper time. It is on an ESXi server and the version is 8.10 LTS it came with a virtual appliance for Opsview. I have ...
0
votes
1answer
870 views

Set Windows system time from command line similar to Linux rdate command

I need to set the time on a Windows 2008 server via an internet clock server from a command line, and ensure that Windows 2008 doesn't do it by itself. I will use this for a .cmd file which looks ...
2
votes
1answer
691 views

Slow connection and NTP

I'm behind a slow connection (Dial Up) with high latency (+400ms). I have recently received a broken MyBook World, which I refurbished and I have Debian installed on it. The problem is, that this ...
0
votes
1answer
107 views

Option to get ntpd to run interactively

I am trying to set up an NTP client on OpenBSD. There is a way to run ntpd 'interactively' so that it tries to connect to our NTP server immediatley and doesn't return until it has updated the time or ...
3
votes
2answers
12k views

How can I view/change/disable the time server in Windows XP, when no “Internet Time” tab?

Normally, the "Date and Time Properties" dialog has a third tab "Internet Time" where you can turn on/off the use of a time server, or change where it points. This tab is missing, and Windows is ...
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4answers
36k views

how to check if NTP adjusted system time on Linux?

I have a machine that experienced some troubles with some of the real time stuff that I'm running. One lead that I have is that NTP daemon may have moved the time, causing false timeouts. How do I ...
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votes
2answers
73k views

Where do I find the 'Internet Time' (NTP) settings in Windows 7

In Windows XP you can get to the 'Internet Time' settings (to select a ntp server or force an update) via the 'Date and Time Properties' in Control Panel. Anyone know where this is found in ...
1
vote
1answer
87 views

How to measure synchronisation performance?

I'm looking for a tool for Debian Linux that can measure the synchronisation performance between two desktops. I'm using RADClock instead of the NTP client to synchronise my desktops. Any ...
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votes
2answers
1k views

Synchronizing time within workgroup

I have workgroup consisting of three Windows 7 computers without access to Internet. My wish would be to synchronize time across all by making one of them NTP server. Is there any free NTP server out ...
2
votes
4answers
12k views

Mac OS X Date & Time Synchronization

When I have set Mac OS X to set it's date and time automatically, how often is this really done? And is there a way I can force an update?
2
votes
1answer
1k views

Software displaying the time of an NTP server

Is there any software that can display the time from an NTP server? Irregardless of what is going on with the time in the operating system itself. Like, just enter in the hostname of an NTP server and ...
2
votes
4answers
178 views

Least expensive AND smallest CPU setup

I'm looking to build a very simple NTP clock, nothing else. I'd like to get a small screen and mount a small chassis to the back of it. It's sole purpose will be to display a clock and poll the data ...
11
votes
1answer
7k views

Windows clients not using NTP server provided via DHCP

I have a network consisting mostly of Windows Vista and 7 clients and an Ubuntu server. The server provides both the DHCP and NTP services through dhcp3-server and openntpd. In my dhcpd.conf, the ...
16
votes
1answer
33k views

What are the iptables rules to permit ntp?

My server's clock is wrong because the firewall doesn't permit ntp traffic. What are the iptables rules required to allow the ntp client to get out and back? Any suggestions how to implement those ...
8
votes
1answer
3k views

How to increase frequency of time server synchronisations?

I have a that PC (Windows XP SP3) keeps losing time whereby it ends up being about 5 mins slow per day from all the other PCs and clocks about the place. Is there a way to increase frequency of ...
0
votes
1answer
379 views

ntp.conf sync to local machines

I have 2 linux machines, they do not have internet connectivity or any other means of getting an external clock. I need one of them to act as the "master"/server and the other machine to sync it's ...
4
votes
4answers
13k views

Why is my NTP controlled computer clock two minutes ahead?

The clock in my computer is configured to be synchronized using NTP. To verify this I have tried two NTP clients using various NTP servers. My computer and the NTP clients are in complete agreement ...
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vote
2answers
886 views

Mac OS X - configuring ntpd server with on LAN with D-Link DIR-655

This question is pretty specific, but I hope someone will have seen this error elsewhere. I am configuring a machine running OS X 10.5.8 to be an NTP server for machines connected to a LAN that is not ...
2
votes
2answers
4k views

How to initiate NTP update

My MBP currently is not connected to the internet when it is booted. (vacation) now I notice, that each time I return to OS X after a Bootcamped XP game, my system time is of by an hour. (XP and OS X ...
0
votes
1answer
1k views

Using ntpd on Ubuntu for Windows 7 client?

I've just aptitude install ntp on my Ubuntu box, and now I'd like my Windows 7 desktop to synchronize its time with that machine. The Ubuntu box is synchronising with my ISP's time servers correctly: ...
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2answers
2k views

ntpd update interval?

How often does the NTPD service update system clocktime by default?
0
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1answer
1k views

Security considerations with using an NTP server

What are the security considerations to keep in mind when using an NTP server to synchronize time? Wikipedia lists that there are no known high-risk vulnerabilities, but are there any lower risk weak ...
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vote
3answers
4k views

Sync the clock on Windows 7 to the time server more frequently

On Windows 7, is the way to sync the clock to the time server more frequently still the same as before (by regedit)? Are there other ways such as by using the control panel or system tool?
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3answers
20k views

I get “An error occurred while Windows was synchronizing with [name of time server].” when trying to automatically synchronise PC time

Prompted by the answers to this question I decided to give the Windows built in time synchronisation another go. However, no matter what time server I use I get this error: "An error occurred while ...