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

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861 views

Windows 7 Time syncing issues

I've had this issue for a very long time and I often search google for solutions and try whatever I find but nothing works and then I give up, only to repeat the same process a few weeks later. this ...
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2answers
2k views

Setting Time in Lubuntu

I have a time server running on a server PC that is meant to change the times of various guest PCs as a result of a TCP/IP command on port 9000 issued by a control application running on an integrated ...
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2answers
170 views

NTP System time different from hardware time

on a centos 6.5 server I've just executed ntp with: service ntpd start It has fixed system time, but hardware time is still wrong. Is this normal? How can i fix it? ntpstat reports: ...
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2answers
623 views

Can I use different server IP address in NTP time synchronization?

By default, it is something like, server 0.rhel.pool.ntp.org server 1.rhel.pool.ntp.org server 2.rhel.pool.ntp.org Can I choose my server IP address for synchronizing time?
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2answers
270 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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2answers
60 views

how to verify firewall rule for a particular service?

How could i check which firewall rules are used by a particular service and whether port is blocked to restrict access by external users? i.e netstat -tulnp | grep 123 udp 0 0 0.0.0.0:...
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1answer
2k views

'net ads join -U username' failing with an error 'NT_STATUS_IO_TIMEOUT'

I am attempting to provide access to Ubuntu shared directories using Active Directory users and group using Samba. I am following this article to install and configure AD and Unix so that access can ...
2
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1answer
356 views

system clock is 5.5 ahead although ntp

I've checked configs and even installed ntp server, nothing seem to fix this, sudo dpkg-reconfigure tzdata Current default time zone: 'Asia/Tehran' Local time is now: Thu May 9 00:49:38 IRDT ...
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1answer
700 views

Windows 8 w32tm clock drift correction

I am running Windows 8 (no virtualization, X79 + i7-3820), and have separate Linux NTP server in my local network. Linux NTP is typically within 1ms of true time. I've set Windows 8 to synchronize ...
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1answer
63 views

Synchronize Time in Linux

I want to synchronize the time between my android device and a raspberry pi. My android is synchronized automatically from the internet ( GMT + 2). I used this code to get the ntp server. final ...
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1answer
213 views

NTP not syncing immediately on windows

I am trying to sync with NTP server, but server is responding with below messages. Below are the wireshark captures. Flags: 0x0c 11.. .... = Leap Indicator: unknown (clock unsynchronized) (3) ..00 1.....
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1answer
119 views

Syncing computer to internal server time

I'm trying to sync my PC time with an internal server but I'm not sure if it's working. I've added the internal server to NTP.conf as below: colin@colin:~$ sudo geany /etc/ntp.conf server 193.61....
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1answer
268 views

How should I troubleshoot a Qnx ntp synchronisation issue?

I setup the w32time service to act as an ntp server, and it has been confirmed on at least one other client (MacOS X). I've used a few different utilities in Windows that indicate that there indeed is ...
1
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1answer
519 views

Windows XP NTP synchronization

I am getting the following error message when trying to synchronize a Windows XP to our NTP. Works with all other Linux servers. The message I receive is: The time sample was rejected because round-...
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1answer
1k views

Error occurred during NTP sync on Windows Server 2008 R2

I have two Windows Server 2008 R2 Standard servers. The first can correctly sync its time with the default NTP server time.windows.com, but the second cannot. The error displayed is: An error ...
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1answer
14 views

error checking date/time sync with ntpq

When I check the sync status using the following command I get a "Connection refused" error root@darkstar:~# ntpq -p ntpq: read: Connection refused root@darkstar:~# What is the cause of this and ...
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1answer
22 views

'dpkg-reconfigure ntp' and no configuration taking place

I've got a clock skew on an older Core2 duo laptop used for testing. Its causing make to complain about sources files being dated in the future after an scp. According to the Debian NTP wiki under ...
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1answer
118 views

Cannot connect to NTP server

I am trying to synchronize my clock with a NTP server by following the instructions here http://support.ntp.org/bin/view/Support/GettingStarted , but this works only with some connections, not with ...
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1answer
60 views

NTP sync issue on client servers

Does starting up NTPD daemon will automatically sync the client server with NTP server? Our server is running 5 mins behind the current time when we checked the service was in stopped state so does ...
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1answer
70 views

Will NTP peering help my servers' relative drift?

I have a series of internal NTP servers; every other machine on my network is configured to talk to these servers like so: # ntp.conf for client machines server 0.ntp.internal iburst server 1.ntp....
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1answer
56 views

Linux ntpd service does not appear to be working

I’m running this flavor of Linux on identical machines … [dalvarado@machine2 ~]$ uname -a Linux mydomain.org 3.10.32-35.201.amzn1.x86_64 #1 SMP Thu Aug 14 22:00:02 UTC 2014 x86_64 x86_64 x86_64 GNU/...
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1answer
517 views

GPS without PPS vs. GPS with PPS vs. NTP

With which time synchronization method I can achieve more accuracy to the absolute UTC time? I use GPS with PPS for now but I want to compare these sources. Assume the following items: Internet is ...
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1answer
40 views

Windows 7 time synchronization does not work

I have a strange behaviour when trying to connect to time server on my freshly installed Win7 x64 SP1: First of all, normally you need to pass a UAC check if you want to enter a timeserver, this does ...
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1answer
521 views

unable to install ntpdate on centos

I'm running centos 6, unable to get ntpdate working, what's wrong? ntpdate pool.ntp.org bash: ntpdate: command not found x yum install ntpdate Loaded plugins: fastestmirror, security Loading mirror ...
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1answer
233 views

Daylight savings issues in windows, possibly related to NTP sync

We have an app deployed to information kiosks across a number of sites, where employees of our client can log in and sign-on/off their shifts and view timesheets etc. Approaching every daylight ...
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1answer
260 views

5 Feb 16:53:26 ntpdate[414]: no server suitable for synchronization found

I want to setup ntp in beaglebone based custom board. /etc/ntp.conf file content is as mentioned below driftfile /var/run/ntp.drift server pool.ntp.org server 1.in.pool.ntp.org server 1.asia.pool....
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1answer
263 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
1k 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 ...
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1answer
126 views

Write Internet Time to a file from windows command line

I want to write the time of an internet time server to a text file from within windows server 2012 command line. Does someone knows how to do that? Thanks!
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0answers
518 views

NTP Multicast configuration

I'm trying to get NTP multicast set up between a few computers. Right now I'm getting NTP multicast packets from a computer that I have neither access to nor information on (let's call that A) that is ...
2
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0answers
132 views

Will a Linux NTP server with an upstream Windows time source have any less jitter?

For my infrastructure we have a platform which cannot synchronize over NTP to a W32time service due to too much jitter from the Windows time source. So my question is, if we have a W32time source ...
2
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0answers
3k 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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0answers
23 views

Sharing the GPS NMEA String with NTP

I am using GPS as a clock for NTP. It works great and NTP opens /dev/gps0 and reads it fine. I also have a program that can open /dev/gps0 to read (and write) to the GPS device so I can process the ...
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0answers
39 views

systemd-timesyncd: Show NTP status

When using systemd-timesyncd, how do you show more detailed NTP status? Specifically, I'm looking for the IP addresses of the peers I'm using (presumably aquired via DHCP). This does not show what I'...
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0answers
27 views

NTP not getting through even to DMZ

My home router seems to be blocking UDP 123. sudo ntpdate -u time.apple.com works as expected, but sudo ntpdate time.apple.com I get: "no server suitable for synchronization found" I can get a ...
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0answers
150 views

NTP syncs with ntp.ubuntu.com but not with the pool options

I am trying to configure my ntp server to synchronize with ntp servers available online. Below is my /etc/inet/ntp.conf and my ntpq -p output # ident "@(#)ntp.server 1.6 00/07/17 SMI" # # /etc/...
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208 views

how to trace and correct the source of time difference between two different clients having the same NTP Stratum 2 source

My standalone server is connected and taking time from a dedicated NTP hardware that is synced to UTC through GPS. All clients in the network are connected to this stand alone server and the clients ...
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0answers
213 views

Using NTPD as a client on Cent OS without Undisciplined Local Clock any disadvantage?

The following is the NTP configuration. My server is a physical system, not a virtual machine. The following ntp-4.2.2p1-15.el5.centos rpm I am using. tinker panic 0 restrict default kod nomodify ...
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0answers
936 views

Configuring ntp server on Ubuntu

I am trying to configure the time on my system, as per one of the ntp servers provided on net. However, the time doesn't change. I am doing this on Ubuntu 12.04 which is installed in Oracle VirtualBox ...
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0answers
309 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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0answers
12 views

Date being reset after I change, with ntpd disabled

Trying to set my RHEL server's date to one in the past for a test but it keeps being reset after about a minute of me changing it. I assumed it was ntp but I have since disabled the ntp service and it ...
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0answers
23 views

NTP does not sync over IPv6

I deployed an NTP server on Debian 8.5 with the following hosts: server time1.example.com server time2.example.com --- server time5.example.com time5 is an ipv6-only host. Further down the config, ...
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0answers
51 views

Synchronize the time between Raspberry Pi and android

I use a raspberry pi with a Bluetooth dongle to simulate a beacon. I want to measure the time needed for a mobile app to detect the ID of a beacon when I change it in the raspberry. So the time ...
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0answers
15 views

Time and Date settings in SSL decryptor

I have a query regarding an SSL decryptor and NTP. This device is connected to a Cisco Meraki box which is in turn connected to a router. Now within the device there is no NTP configuration and ...
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0answers
21 views

ntpdate pool.ntp.org getting lost on slackware

On Slackware 13.1, keep time correct is getting difficult. I've noticed BIOS clock is wrong. So I do ntpdate pool.ntp.org and just after I check time with date. It's correct. I check it again with ...
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0answers
17 views

ntpd clock calculation in absence of ntp servers

We are flying a Linux machine on a high altitude balloon and I was wondering if ntpd would continue to correct for the system clock drift even without access to ntp servers. ntpd has been running on ...
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0answers
334 views

W32Time not synchronizing with PDC after /syncfromflags:domhier

We have two domain controllers on a local network: Zeus [PDC] Neptune Zeus is configured to pull from an external time source and is set as reliable: w32tm /config /manualpeerlist:0.pool.ntp.org /...
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0answers
41 views

How to use adjtimex

I have a Debian machine that at the time of configuration will have access to NTP servers. But once configured and in use, it will not have access to NTP servers. What are the steps to ensure that the ...
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0answers
300 views

ntpd & ntpdate won't set time

I recently purchased a new development board and, unfortunately, the edition of Linux provided doesn't sync with an NTP server automatically. I have tried using "ntpd -dgq", however the output is ...
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0answers
335 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 ...