The Network Time Protocol daemon (NTPd) is a daemon program that synchronizes the system time with time servers using the Network Time Protocol (NTP).

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FreeBSD's net/ntp port is forbidden due to CVE-2013-5211, with no support upstream

FreeBSD port net/ntp was marked forbidden because it is vulnerable to traffic spoofing and amplification attacks, as documented in CVE-2013-5211. However, there's been no support from the upstream ...
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NTP server not working properly

I have installed a very simple NTP server on a Red Hat server I own, the configuration is pretty basic: driftfile /var/lib/ntp/drift restrict default kod nomodify notrap restrict -6 default kod ...
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CentOS 6 KVM host with CentOS 6 guests kvm-clock enabled major time drift

I have a CentOS 6 KVM host with CentOS 6 guests, all 64bit. The host syncs time from NTP and has remained bang on. All the guests have kvm-clock listed as current_clocksource but over the last 3 ...
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Arch ntpd/ntpdate not synchronizng clock

My raspi running Arch isnt updating time with NTPD. Im running [root@fatpi ~]# cat /proc/version Linux version 3.10.28-1-ARCH (nobody@root-armv6-copy) (gcc version 4.8.2 20131219 (prerelease) ...
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What could cause the clock to jump by 5 minutes?

I have a (physical) box running a stripped down Ubuntu; every now and then (6 times in 3 months), the clock jumps backwards by exactly 300 seconds (+- 0.01 seconds; always exactly 300 seconds). It ...
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NTP is synced properly but still doesn't update the time?

I wanted to test if ntp was working on my machine, so I set the time back 5 minutes and restarted ntp $ sudo service ntp stop $ sudo date -s "9:40 AM" # This time was 5 minutes ago $ sudo service ntp ...
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ntpd takes 9 hours to sync

I had a situation lately with a host that need up to date ntp servers. We had during the weekend a crash of our internet router. When everything came back to hte normal our application was still ...
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enable/disable NTP service on Ubuntu 12.04

Our application runs on Ubuntu 12.04 precise. On this server, we have both ntpdate and ntp. How to enable and disable ntp service on-demand? I tried sudo update-rc.d -f ntp remove/default and ...
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NTP symmetric mode

I'm configuring NTP symmetric modes. Say I have Peer A (192.168.101.1) and Peer B(192.168.101.2) and configure their ntp.conf as follows: # Peer A peer 192.168.101.2 server 127.127.1.0 fudge ...
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Error when running ntpd on openVZ host: cap_set_proc() failed to drop root privileges:

CentOS 6.x | OpenVZ I want to run a NTP server on a vps host of mine. Is this possible? When I try to start ntpd, it fails immediately and gives the following error: Mar 14 22:47:44 ev1 ...
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How to get ntp to use gpsd to update system date/time with a large offset

I have a GPS connected to my system, and if I change system time to be ahead/behind GPS time by less than 4 hours, ntpd ensures that the system time is updated to match that of the GPS. If, however, ...
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Does `ntpd` set hardware clock?

Does ntpd set hardware clock? Does ntpd set hardware clock if I pass -q option (mean one-time correction)? Linux 3.5.6, ntp 4.2.6.p5. Here is written that ntpd syncs the system clock to hardware ...
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Is there any reason to have ntpd sync to Local(0) if server is not used as a time source?

Running CentOS release 5.8 I had a time drift issue on a server which I fixed - it was not syncing the hwclock so that on a reboot ntp would be more than 1000 seconds off and never sync time. While ...
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What are possible reasons for erratic NTP synchronistation?

On a Ubuntu 10.04 system I noticed following strange NTP sync events: Jul 3 02:19:51 hst ntpd[1432]: no servers reachable Jul 3 02:36:55 hst ntpd[1432]: synchronized to 91.189.94.4, stratum 2 Jul ...
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Why does CentOS not have an NTP drift file?

It seems that CentOS does not have a ntp.drift or similar file. In /etc/ntp.conf, it says that you can use /var/lib/ntp/drift as a drift file but this file does not exist. Does CentOS does not ...
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How to check if NTPD updates Linux machine's time successfully using shell?

I'm trying to use NTPD to update my Linux machine's time to a specified NTP server. Here is the scenario: Each time the Linux machine starts up, I want to update the time from NTP server and if ...
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How can I tell if my system is keeping the system time up to date?

How can I tell if my Debian system is keeping the system time accurate by getting NTP updates? Basically I want to turn this on if it is currently off, but I don't know if it is on or off.
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Has OpenBSD's ntpd replacement been ported to other BSDs? Or Linux?

I know the OpenBSD team wrote a from-scratch replacement for ntpd—OpenNTPD—that is available via pkgsrc/ports. My question is more about the base system: Is OpenNTPD the default ntpd in the base ...