The NTP is a protocol for synchronizing the clocks of computers based on UDP for clock synchronization of a set of computers in data networks with variable latency. NTP keeps the clock on a computer with the time always right and with great accuracy. Originally conceived by David L. Mills of the ...
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Modem not syncing with Time Servers?
my modem has a parental control feature which I want to use and I know how to configure it. The problem is this feature requires the exact current time to work. My modem can sync with the internet ...
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3answers
84 views
Does it matter which NTP time server do I choose in Windows?
When enabling Windows to set system time via Internet, I'm presented with the following dialog:
Does it matter which time server I choose?
How would I know if one was "better" than the others?
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3answers
75 views
How can I check a system's current NTP configuration?
I need to verify the current NTP configuration on some Windows systems. Ideally, I'd like to be able to do this via command line instead of navigating through configuration screens (especially since ...
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1answer
120 views
Determine the time difference between two linux servers
I am troubleshooting a latency network issue on a network. It is probably a nic or cabling issue, but while I was going through the process of figuring it out, I was looking at the timings of a ping ...
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1answer
117 views
My system clock is an extra (extra) hour ahead during BST/ daylight saving
I have a problem when my Windows 7 64-bit laptop is used during BST (British Summer Time)/ daylight saving periods.
Instead of the +1 shift in time, the system clock shifts +2 hours and can be a few ...
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1answer
71 views
How to configure Windows Server & Desktop OS to use multiple Network Time (NTP) Servers?
We experienced an outage in our usual NTP (Network Time Protocol) server - a Linux box that we sync all of our systems to.
I am noticing that in the "Adjust Date/Time -> Internet Time" tab I can set ...
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1answer
90 views
How inaccurate must the clock's time be for NTLM requests to be denied due to the time being incorrect?
We have a network where the time on some of the client workstations is inaccurate. There is a problem with NTP on the clients or domain controllers causing the time to not synchronize. We are ...
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229 views
Allow LAN clients to sync time through DD-WRT
I'm having problems when syncing time trough DD-WRT. I have multiple LAN clients and none of them seems to be able to sync time with an internet time server. I have a TP-Link WR1043ND that does this ...
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1answer
632 views
How to Get Standalone Windows 7 Cannot Sync Time (NTP)
I am trying to get my Windows 7 Professional Machine to sync time correctly. This laptop is not a member of any domain.
If I try to go to the clock settings, Internet Time tab, and click on "Update ...
9
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1answer
261 views
How to synchronize clocks for computers that are not online?
I have some computers that run Windows 7 embedded and are connected to each other by a switch, but are not connected to a larger network or the internet. After a few weeks, the clocks drift and it is ...
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0answers
139 views
How to skew a Mac's clock 10 minutes while still keeping it “synchronized”?
My wife is always running late. How can I skew her Mac's clock 10 minutes while still keeping it "synchronized"?
I looked at the fudge setting of /etc/ntp.conf but it's only for a Reference Clock and ...
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1answer
45 views
Can I copy the ntpdate binary from another machine in order to update date & time?
On my Red Hat 5.3 Linux machine, NTP isn’t installed (can't install it for some reasons). However I can copy the binary /usr/sbin/ntpdate from another Linux machine to mine.
If I only get the file ...
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1answer
44 views
Stopping ntp - time is still jumping back in Debian
I do something like:
service ntp stop
503 date +%T -s "15:10:00"
But after a while it jums forward to the correct time (If I put it forward in time, it seems to be working).
This is a VMWare Linux ...
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0answers
109 views
Change system time and turn off Internet time in Debian/Gnome
Changing the time is easy, but then it is automatically synchronized with a time-server.
Before I had access to admin menus, but now I don't, when I click on the clock and try to change, i get an ...
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1answer
83 views
Public, reputable sources of time sync via HTTP to use where NTP is blocked?
Let's say I'm in a corporate network where the NTP protocol is blocked, the BOFH^H^H^H^H sysadmins won't unblock it, and they didn't bother to set up a good internal NTP server. What's a good source ...
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2answers
920 views
Time problem in ArchLinux
I use ArchLinux and I have had problems with my system time for many months.
Previously it was working, but once I updated my PC, the system time was shifted at every startup (like it wasn't ...
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3answers
171 views
Can you help me find an NTP time server that is synchronised with an atomic clock?
I would like to be able to read the time from an NTP server that is connected to a very accurate time source - an atomic clock, GPS clock, or similar. I can see an accurate clock here ...
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1answer
472 views
NTP sync on Windows 7
How would you make a Windows 7 machine sync with free ntp servers on the Internet?
This details for Windows Server 2008, but after tweaking the registry and trying to restart the service, it doesn't ...
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2answers
223 views
NTP sync… doesn't
Following the instructions here, I've manually configured the Windows Time service to use an external time source.
As I noticed the server's clock drifts very fast (1s per 40min), I set the ...
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1answer
715 views
NTP sync on Windows Server 2008
How would you make a Windows Server 2008 server sync with free ntp servers on the Internet?
What free programs would do this?
How do you configure them? (I need it to sync every 30sec as the server's ...
3
votes
1answer
2k views
How to use ntpdate behind a proxy?
Is it possible to use ntpdate behind a HTTP proxy with authentication? In case it is not possible, are there any good alternatives?
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2answers
88 views
NTPd giving the wrong time
Running ntpd -q on a Fedora 14 VM gives the wrong time. I'm in the UK so my time should be UTC+1, but instead it's 6 minutes behind what it should be.
Anyone know why this might be and how to fix it?
...
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0answers
85 views
ntpdsim - simulator for ntp
I am trying to use ntpdsim tool from here: http://www.eecis.udel.edu/~mills/ntp/html/ntpdsim.html
First I installed the newest version, but it seems to work only with the new syntax, which you can ...
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1answer
93 views
How to track when Linux determines time without NTP with some other method?
When a Linux machine with NTP capabilities will start and it does not find the NTP server, how it will determine the time? A clue I have is that it uses some heuristic method but I don't need what ...
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1answer
201 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 ...
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2answers
421 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 ...
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1answer
635 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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2answers
340 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 ...
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1answer
412 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
229 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 ...
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1answer
76 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 ...
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2answers
1k 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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3answers
1k 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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1answer
9k 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 ...
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1answer
59 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
411 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 ...
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2answers
2k 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
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1answer
197 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
150 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 ...
2
votes
1answer
2k 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 ...
6
votes
1answer
3k 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 ...
3
votes
2answers
1k 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 ...
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1answer
260 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
3k 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 ...
1
vote
2answers
571 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
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2answers
2k 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 ...
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1answer
659 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
881 views
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1answer
430 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 ...
1
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2answers
1k 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?
