On 01/27/2016 02:12 AM, Tony Mountifield wrote:
In C7 i have no idea
In C7, "-g" appears to be an argument to ntpd, by default.
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In article <56a88188.6070...@hogranch.com>,
John R Pierce wrote:
> On 1/27/2016 12:25 AM, Traiano Welcome wrote:
> > I'm tempted to stick an "ntpdate -u ..." in the crontab to force
> > time-synch, but I don't see why that's needed if ntpd service should
> > already be fulfilling that purpose.
>
On 27 January 2016 at 08:53, Dirk Deimeke wrote:
> On 2016-01-27 09:36, John R Pierce wrote:
>
> Hi!
>
>> ntpd won't make drastic changes in the time, if its too far off. its
>> designed to stabilize the clock by making small changes in speeding it
>> up or slowing it down, and not 'staircase' set
On 2016-01-27 09:36, John R Pierce wrote:
Hi!
ntpd won't make drastic changes in the time, if its too far off. its
designed to stabilize the clock by making small changes in speeding it
up or slowing it down, and not 'staircase' setting it absolutely.
http://www.ntp.org/ntpfaq/NTP-s-algo.htm#
On 27 January 2016 at 08:36, John R Pierce wrote:
> On 1/27/2016 12:25 AM, Traiano Welcome wrote:
>>
>> I'm tempted to stick an "ntpdate -u ..." in the crontab to force
>> time-synch, but I don't see why that's needed if ntpd service should
>> already be fulfilling that purpose.
>
>
>
> ntpd won't
On 1/27/2016 12:25 AM, Traiano Welcome wrote:
I'm tempted to stick an "ntpdate -u ..." in the crontab to force
time-synch, but I don't see why that's needed if ntpd service should
already be fulfilling that purpose.
ntpd won't make drastic changes in the time, if its too far off. its
designed
On 20.12.2014 03:42, listmail wrote:
> I just saw this:
>
> https://ics-cert.us-cert.gov/advisories/ICSA-14-353-01
>
> which includes this:
> " A remote attacker can send a carefully crafted packet that can overflow a
> stack buffer and potentially allow malicious code to be executed with the
> p
C7 -
http://lists.centos.org/pipermail/centos-announce/2014-December/020850.html
C6 -
http://lists.centos.org/pipermail/centos-announce/2014-December/020852.html
C5 -
http://lists.centos.org/pipermail/centos-announce/2014-December/020851.html
On 20/12/14 14:04, Eero Volotinen wrote:
fixed in:
fixed in:
https://rhn.redhat.com/errata/RHSA-2014-2025.html
https://rhn.redhat.com/errata/RHSA-2014-2024.html
maybe it's soon in centos too..
2014-12-20 4:42 GMT+02:00 listmail :
> I just saw this:
>
> https://ics-cert.us-cert.gov/advisories/ICSA-14-353-01
>
> which includes this:
> " A remote
https://access.redhat.com/security/cve/CVE-2014-9295
2014-12-20 4:42 GMT+02:00 listmail :
> I just saw this:
>
> https://ics-cert.us-cert.gov/advisories/ICSA-14-353-01
>
> which includes this:
> " A remote attacker can send a carefully crafted packet that can overflow a
> stack buffer and potenti
On Tue, Sep 4, 2012 at 10:36 AM, Giles Coochey wrote:
> On 04/09/2012 07:31, Artifex Maximus wrote:
>>
>>
>> The first time (16:39:13.653674) client cannot sync to the server but
>> second time (16:39:43.145984) that was successful even if there is a
>> 'bad udp cksum'. BTW, is it normal? Tcpdump
On 04/09/2012 07:31, Artifex Maximus wrote:
The first time (16:39:13.653674) client cannot sync to the server but
second time (16:39:43.145984) that was successful even if there is a
'bad udp cksum'. BTW, is it normal? Tcpdump says there was traffic and
sync happened later so rule is OK I think.
On Mon, Sep 3, 2012 at 4:32 PM, Giles Coochey wrote:
> On 03/09/2012 15:18, Artifex Maximus wrote:
>>
>> On Mon, Sep 3, 2012 at 11:15 AM, Leonard den Ottolander
>> wrote:
>>>
>>> On Sun, 2012-09-02 at 07:46 +, Artifex Maximus wrote:
Any idea what is wrong?
>>>
>>> The iptables rules
On Mon, 2012-09-03 at 14:18 +, Artifex Maximus wrote:
> My server is able to synchronize with GPSNTP so rules
> are fine for that (because my output chain is ACCEPT per default).
And related traffic is allowed too, yes, I overlooked that.
Are you sure your windows clients have addresses in th
On 03/09/2012 15:18, Artifex Maximus wrote:
On Mon, Sep 3, 2012 at 11:15 AM, Leonard den Ottolander
wrote:
On Sun, 2012-09-02 at 07:46 +, Artifex Maximus wrote:
Any idea what is wrong?
The iptables rules you specify only allow clients from your local
network access to your "proxy" ntp ser
On Mon, Sep 3, 2012 at 11:15 AM, Leonard den Ottolander
wrote:
> On Sun, 2012-09-02 at 07:46 +, Artifex Maximus wrote:
>> Any idea what is wrong?
>
> The iptables rules you specify only allow clients from your local
> network access to your "proxy" ntp server. However, you do not specify
> any
On 03/09/2012 13:00, Philippe Naudin wrote:
Le lun. 03 sept. 2012 13:15:41 CEST, Leonard den Ottolander a écrit:
On Sun, 2012-09-02 at 07:46 +, Artifex Maximus wrote:
Any idea what is wrong?
The iptables rules you specify only allow clients from your local
network access to your "proxy" n
Le lun. 03 sept. 2012 13:15:41 CEST, Leonard den Ottolander a écrit:
> On Sun, 2012-09-02 at 07:46 +, Artifex Maximus wrote:
> > Any idea what is wrong?
>
> The iptables rules you specify only allow clients from your local
> network access to your "proxy" ntp server. However, you do not speci
On Sun, 2012-09-02 at 07:46 +, Artifex Maximus wrote:
> Any idea what is wrong?
The iptables rules you specify only allow clients from your local
network access to your "proxy" ntp server. However, you do not specify
any rules for eth1 to allow that ntp server to synchronise with the
remote se
On 2.9.2012 18:22, Artifex Maximus wrote:
> On Sun, Sep 2, 2012 at 2:33 PM, Markus Falb
> wrote:
>> On 2.9.2012 09:46, Artifex Maximus wrote:
>>> Hello!
>>>
>>> I would like to setup an NTP server for my Windows network using
>>> CentOS 6.3 with firewall turned on.
...
>>> The script for making f
On Sun, Sep 2, 2012 at 2:33 PM, Markus Falb wrote:
> On 2.9.2012 09:46, Artifex Maximus wrote:
>> Hello!
>>
>> I would like to setup an NTP server for my Windows network using
>> CentOS 6.3 with firewall turned on. As I learned the NTP protocol uses
>> port 123 UDP. I have two NIC cards. One for i
On 2.9.2012 09:46, Artifex Maximus wrote:
> Hello!
>
> I would like to setup an NTP server for my Windows network using
> CentOS 6.3 with firewall turned on. As I learned the NTP protocol uses
> port 123 UDP. I have two NIC cards. One for internal network and one
> for access internet. Both cards
On Sun, Sep 2, 2012 at 8:37 AM, Earl Ramirez wrote:
> On Sun, 2012-09-02 at 07:46 +, Artifex Maximus wrote:
>> Hello!
>>
>> I would like to setup an NTP server for my Windows network using
>> CentOS 6.3 with firewall turned on. As I learned the NTP protocol uses
>> port 123 UDP. I have two NIC
On Sun, 2012-09-02 at 07:46 +, Artifex Maximus wrote:
> Hello!
>
> I would like to setup an NTP server for my Windows network using
> CentOS 6.3 with firewall turned on. As I learned the NTP protocol uses
> port 123 UDP. I have two NIC cards. One for internal network and one
> for access inter
On Mon, May 28, 2012 at 12:21:54PM -0400, James B. Byrne wrote:
> I cannot find anything in the logs that explain what is happening to
> me. The evidence I have indicates that when the host kvm system is
> powered off and restarted then the guests do not restart. This
> behaviour is at variance
On Mon, May 28, 2012 10:10, Bob Hoffman wrote:
> On 5/28/2012 9:59 AM, James B. Byrne wrote:
>> On Mon, May 28, 2012 08:50, Reindl Harald wrote:
>>>
>>> Am 28.05.2012 14:41, schrieb James B. Byrne:
when power returned all of the restored guests were immediately
shutdown by ntp because th
On 5/28/2012 9:59 AM, James B. Byrne wrote:
> On Mon, May 28, 2012 08:50, Reindl Harald wrote:
>>
>> Am 28.05.2012 14:41, schrieb James B. Byrne:
>>> when power returned all of the restored guests were immediately
>>> shutdown by ntp because the time differential between the
>>> restored systems an
On Mon, May 28, 2012 08:50, Reindl Harald wrote:
>
>
> Am 28.05.2012 14:41, schrieb James B. Byrne:
>> when power returned all of the restored guests were immediately
>> shutdown by ntp because the time differential between the
>> restored systems and that of the ntpd sync servers exceeded
>> the
On Mon, May 28, 2012 at 5:41 AM, James B. Byrne wrote:
> We encountered a problem with respect to KVM virtual host restore and
> NTP. Specifically, our VM test host was shutdown by an extended power
> outage and when power returned all of the restored guests were
> immediately shutdown by ntp beca
On Mon, May 28, 2012 at 08:41:30AM -0400, James B. Byrne wrote:
> We encountered a problem with respect to KVM virtual host restore and
> NTP. Specifically, our VM test host was shutdown by an extended power
> outage and when power returned all of the restored guests were
> immediately shutdown by
>>
> [root@proxy1 squid]# netstat -npl | grep ntp
> udp0 0 172.21.0.2:123 0.0.0.0:*
> 1154/ntpd
> udp0 0 127.0.0.1:123 0.0.0.0:*
> 1154/ntpd
> udp0 0 0.0.0.0:123 0.0.0.0:*
>
On 2012-05-16 13:19, Shiv. NK wrote:
> Hello Dear Friends,
>
> it is CentOS Release 6.2, ntpd is running but do not see bounded to
> the
> port udp:123
>
> any guidelines would be very much appreciable.
>
> [root@jet mavi]# netstat -ntlp | grep ntpd
>
>
>
> [root@jet mavi]# netstat -ntl | grep 12
Seems like a well thought out and thorough explanation of how to do what
you're looking for.
http://ubuntuforums.org/showthread.php?t=579418
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>
> Try setting it like this:
>
>fudge 127.127.1.0 stratum 10
>server 127.127.1.0 prefer
>
>
Bowie
That did not work either.
jerry
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Jerry Geis wrote:
>> You can get an assortment of devices that receive time signals from
>> satellites to act as good authoritative time sources on your private
>> network if you are willing to spend some money. If you just want to
>> fake it, I think the trick is to lower the stratum number in
>
> You can get an assortment of devices that receive time signals from
> satellites to act as good authoritative time sources on your private
> network if you are willing to spend some money. If you just want to
> fake it, I think the trick is to lower the stratum number in the 'fudge'
> sett
On 7/1/2010 9:28 AM, Jerry Geis wrote:
> I have a need to run a centos server CUT-off from any connected network.
> So the NTP server that is running on this very small network cannot
> connect to
> any other site to do what NTP does.
>
> however, I have devices on this small network that I wish to
On Thu, 2010-07-01 at 10:51 -0400, Brunner, Brian T. wrote:
>
> > -Original Message-
> > From: centos-boun...@centos.org
> > [mailto:centos-boun...@centos.org] On Behalf Of Jerry Geis
> > Sent: Thursday, July 01, 2010 10:28 AM
> > To: CentOS ML
> > Subject: [CentOS] ntp server
> >
> > I
> -Original Message-
> From: centos-boun...@centos.org
> [mailto:centos-boun...@centos.org] On Behalf Of Jerry Geis
> Sent: Thursday, July 01, 2010 10:28 AM
> To: CentOS ML
> Subject: [CentOS] ntp server
>
> I have a need to run a centos server CUT-off from any
> connected network.
>
On Fri, 18 Dec 2009, Karanbir Singh wrote:
> On 18/12/09 13:11, Akemi Yagi wrote:
>> That was for CentOS-4. The update for CentOS-5 is indeed unavailable
>> as of today.
>
> ntp and conga should both be available at some point today. I need to
> run some tests first, lets see if I can get those d
On 18/12/09 13:11, Akemi Yagi wrote:
> That was for CentOS-4. The update for CentOS-5 is indeed unavailable
> as of today.
ntp and conga should both be available at some point today. I need to
run some tests first, lets see if I can get those done during my lunch
break at work.
- KB
__
On Fri, Dec 18, 2009 at 12:37 AM, Christoph Maser wrote:
> Am Freitag, den 18.12.2009, 06:42 +0100 schrieb Gilbert Sebenste:
>> Excellent. We're all caught up on updates now, except...
>>
>> I didn't see the NTP update. That's a big one, with an easy denial of
>> sservice attack. Is that planning
Am Freitag, den 18.12.2009, 06:42 +0100 schrieb Gilbert Sebenste:
> Excellent. We're all caught up on updates now, except...
>
> I didn't see the NTP update. That's a big one, with an easy denial of
> sservice attack. Is that planning to be released? I know there was an
> issue with it for awhile..
thanks guys I'm seeing is not so hard.
- Original Message -
From: "Steve Lindemann"
To: "CentOS mailing list"
Sent: Thursday, December 17, 2009 11:49 AM
Subject: Re: [CentOS] NTP
> Ray Van Dolson wrote:
>> On Thu, Dec 17, 2009 at 11:16:45AM -0
Ray Van Dolson wrote:
> On Thu, Dec 17, 2009 at 11:16:45AM -0500, Davy Leon wrote:
>> I have a Centos 5.3. I'm wondering how can I make this linux box to
>> act as a time server for my small network. I just need this Centos
>> PC act as a time reference for the other PCs so they can keep the
>> ti
On Thu, Dec 17, 2009 at 11:16:45AM -0500, Davy Leon wrote:
> Hi folks
>
> I have a Centos 5.3. I'm wondering how can I make this linux box to
> act as a time server for my small network. I just need this Centos
> PC act as a time reference for the other PCs so they can keep the
> time exact the s
Akemi Yagi wrote:
>You may want to check upon this CentOS bug report:
>
>http://bugs.centos.org/view.php?id=4060
Which has been closed as 'no change required'. Some change is required.
As things stand my systems are on version 4.2.0.a.20040617-8.el4_8.2,
the CentOS name for the August update. T
On Thu, Dec 10, 2009 at 1:17 AM, Ron Yorston wrote:
> I noticed that although I'd fetched the latest update to ntp from the
> mirror it wasn't being installed.
>
> It seems that the version numbers have got out of step. According to
> the changelog the update that was released in August should ha
Tom Brown writes:
>
> Hi
>
> On 5.3 i have a situation where some boxes have been 3 or 4 seconds out
> and restarting ntpd has fixed the issue.
>
> What i dont understand is why the clocks did not drift to the correct
> time when the config seems correct in that restarting ntp did correct
>
> Is the directory /var/lib/ntp present, and with write permissions for
> the 'ntp' user? Does the drift file exist?
> Does ntpd ever lock in? What do you see in 'ntpq -p' over time?
> Are these heavily-loaded boxes, or boxes with wildly-varying loads?
>
>
$ ll /var/lib/ntp
total 4
-rw-r--r-
Tom Brown wrote:
> Hi
>
> On 5.3 i have a situation where some boxes have been 3 or 4 seconds out
> and restarting ntpd has fixed the issue.
>
> What i dont understand is why the clocks did not drift to the correct
> time when the config seems correct in that restarting ntp did correct
> the tim
Not knowing what country your from but at a U.S. taxpayer I have no
reservations about using time.nist.gov myself, some people think it's
rude to directly query stratum 1 servers.
I typically have 2-3 NTP servers per location behind a load balancer and
my internal servers sync against the load b
On Tue, 2009-07-21 at 18:36 -0400, Andy Harrison wrote:
> On Tue, Jul 21, 2009 at 6:22 PM, Scott Silva wrote:
> >>
> > If there are other interfaces available, FreeBSD does well as a timeserver
> > with SOME GPS receivers. But if it is working OK, I would just leave it
> > running unless the hardw
On Tue, Jul 21, 2009 at 6:22 PM, Scott Silva wrote:
>>
> If there are other interfaces available, FreeBSD does well as a timeserver
> with SOME GPS receivers. But if it is working OK, I would just leave it
> running unless the hardware is going south.
>
It's not so much that the hardware is curren
on 7-21-2009 12:29 PM Andy Harrison spake the following:
> Currently, my time server is a Sun v240 with a 32-pci gps card (with a
> proprietary Solaris driver) attached to our gps receiver via an sma
> cable up to the roof of my building. As I'm migrating almost all of
> our Solaris servers and se
On Tue, Jul 21, 2009 at 5:16 PM, nate wrote:
>
> Not knowing what country your from but at a U.S. taxpayer I have
> no reservations about using time.nist.gov myself, some people
> think it's rude to directly query stratum 1 servers.
My server already is a stratum 1 time server. I use other extern
Andy Harrison wrote:
> Currently, my time server is a Sun v240 with a 32-pci gps card (with a
> proprietary Solaris driver) attached to our gps receiver via an sma
> cable up to the roof of my building. As I'm migrating almost all of
> our Solaris servers and services over to CentOS, I'd like to k
On Tue, Jul 21, 2009 at 4:23 PM, Bowie Bailey wrote:
> Since we don't have any pressing need for a high-precision time source,
> we just sync our main server to the public ntp.org pool and then have
> everything else in the building sync to the main server.
>
We do have a pressing need for high-pr
Andy Harrison wrote:
> Currently, my time server is a Sun v240 with a 32-pci gps card (with a
> proprietary Solaris driver) attached to our gps receiver via an sma
> cable up to the roof of my building. As I'm migrating almost all of
> our Solaris servers and services over to CentOS, I'd like to k
> Mar 15 14:28:15 SER1 ntpd[25037]: sendto(172.29.21.16): Invalid argument
> Mar 15 14:45:22 SER1 ntpd[25037]: sendto(172.29.21.16): Invalid argument
> Mar 15 15:02:29 SER1 ntpd[25037]: sendto(172.29.21.16): Invalid argument
i remember (or think so) i had this some time ago on one of my machines.
Thanks. You are right. I did NOT reboot after change Ip address. It is
correct now.
--- 09/3/15 (日)，Filipe Brandenburger 寫道：
> 寄件者: Filipe Brandenburger
> 主旨: Re: [CentOS] NTP error message on /var/log/messages
> 收件者: "CentOS mailing list"
> 日期: 2009 3 15 日 下午 7:3
Hi,
2009/3/15 mcclnx mcc :
> I just setup CENTOS 4.7 with latest patches on DELL server.
> I also configured NTP point to out time server. I found
> /var/log/messages file every 20 to 30 minutes will generate
> a error message :
> Mar 15 14:28:15 SER1 ntpd[25037]: sendto(172.29.21.16): Invalid a
On Sunday 15 March 2009 16:22, mcclnx mcc wrote:
> I just setup CENTOS 4.7 with latest patches on DELL server. I also
> configured NTP point to out time server. I found /var/log/messages file
> every 20 to 30 minutes will generate a error message :
>
> Mar 15 14:28:15 SER1 ntpd[25037]: sendto(
mcclnx mcc wrote:
> I just setup CENTOS 4.7 with latest patches on DELL server. I also
> configured NTP point to out time server. I found /var/log/messages file
> every 20 to 30 minutes will generate a error message :
>
> Mar 15 14:28:15 SER1 ntpd[25037]: sendto(172.29.21.16): Invalid argument
On Saturday 15 November 2008 14:19:12 Dirk H. Schulz wrote:
> Anne,
>
> please check your /etc/ntp.conf for the "server" statement; CentOS original
> is
>
> > server 0.rhel.pool.ntp.org
> > server 1.rhel.pool.ntp.org
> > server 2.rhel.pool.ntp.org
>
My config file says
server 0.centos.pool.ntp.org
On Saturday 15 November 2008 14:13:44 Olaf Mueller wrote:
> Anne Wilson wrote:
> > On Saturday 15 November 2008 10:41:14 Olaf Mueller wrote:
> >> Anne Wilson wrote:
> >
> > No, the server is on a fixed IP, internally and externally.
>
> Ok, here is my config file, hope this helps.
> There was an op
Anne,
please check your /etc/ntp.conf for the "server" statement; CentOS original
is
server 0.rhel.pool.ntp.org
server 1.rhel.pool.ntp.org
server 2.rhel.pool.ntp.org
These 2 server ips you listed do not belong to this pool (you can check via
dns), and resolved backwardly their names do not s
Anne Wilson wrote:
> On Saturday 15 November 2008 10:41:14 Olaf Mueller wrote:
>> Anne Wilson wrote:
> No, the server is on a fixed IP, internally and externally.
Ok, here is my config file, hope this helps.
There was an option in the 'restrict default' line that I had to remove
for working proper
On Saturday 15 November 2008 10:41:14 Olaf Mueller wrote:
> Anne Wilson wrote:
>
> Hello.
>
> > **Unmatched Entries**
> >sendto(193.6.222.20) (fd=21): Invalid argument: 1 time(s)
> >sendto(141.89.226.2) (fd=21): Invalid argument: 1 time(s)
> >
> > Does this mean that ntp is failing? I ass
Anne Wilson wrote:
Hello.
> **Unmatched Entries**
>sendto(193.6.222.20) (fd=21): Invalid argument: 1 time(s)
>sendto(141.89.226.2) (fd=21): Invalid argument: 1 time(s)
>
> Does this mean that ntp is failing? I assume so, and if so, how do I
> change the sources to something that will w
Scott Ehrlich schrieb:
I have a Centos 5 64-bit server that has ntp service enabled. Windows
XP with SP2 cannot properly sync to it for time, but can communicate
with it via samba, ssh, and anything else.I also disabled the
Windows Firewall. The C5 system does not have any firewall enable
On Fri, 2008-02-01 at 13:49 -0700, Jason Ross wrote:
> On Fri, 2008-02-01 at 11:43 -0800, James D. Parra wrote:
> > -Original Message-
> > From: Scott Ehrlich [mailto:[EMAIL PROTECTED]
> > Sent: Friday, February 01, 2008 11:37 AM
> > To: centos@centos.org
> > Subject: [CentOS] NTP server
>
Scott Ehrlich wrote:
> I have a Centos 5 64-bit server that has ntp service enabled. Windows
> XP with SP2 cannot properly sync to it for time, but can communicate
> with it via samba, ssh, and anything else.I also disabled the
> Windows Firewall. The C5 system does not have any firewall enab
XP command line:
net time \\servername returns what?
Perhaps the response will give a clue.
To set it:
net time \\servername /set /yes
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Scott Ehrlich
Sent: Friday, February 01, 2008 11:37 AM
To: cent
On Fri, 2008-02-01 at 11:43 -0800, James D. Parra wrote:
> -Original Message-
> From: Scott Ehrlich [mailto:[EMAIL PROTECTED]
> Sent: Friday, February 01, 2008 11:37 AM
> To: centos@centos.org
> Subject: [CentOS] NTP server
>
>
> I have a Centos 5 64-bit server that has ntp service enabl
-Original Message-
From: Scott Ehrlich [mailto:[EMAIL PROTECTED]
Sent: Friday, February 01, 2008 11:37 AM
To: centos@centos.org
Subject: [CentOS] NTP server
I have a Centos 5 64-bit server that has ntp service enabled. Windows XP
with SP2 cannot properly sync to it for time, but can co
--Original Message-
> From: Nicolas Sahlqvist [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, November 20, 2007 8:36 AM
> To: Engineer, Gaurav
> Subject: Re: [CentOS] ntp queries not being answered
>
> Hi Gaurav,
>
> You can check the output of "iptables -L -n" or use
On Nov 20, 2007 2:05 PM, Engineer, Gaurav <[EMAIL PROTECTED]> wrote:
>
>
>
> Hello All,
>
>
>
> My name is Gaurav, and I am tasked with configuring a linux box with NTP.
>
> I am having a problem that I hope you can help me with.
>
> We have installed CentOS V5 on 1 processor down in the lab. The
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