Re: [CentOS] NTP server problem behind firewall

2012-09-04 Thread Artifex Maximus
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

Re: [CentOS] NTP server problem behind firewall

2012-09-04 Thread Giles Coochey
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.

Re: [CentOS] NTP server problem behind firewall

2012-09-03 Thread Artifex Maximus
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

Re: [CentOS] NTP server problem behind firewall

2012-09-03 Thread Leonard den Ottolander
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

Re: [CentOS] NTP server problem behind firewall

2012-09-03 Thread Giles Coochey
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

Re: [CentOS] NTP server problem behind firewall

2012-09-03 Thread Artifex Maximus
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

Re: [CentOS] NTP server problem behind firewall

2012-09-03 Thread Giles Coochey
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

Re: [CentOS] NTP server problem behind firewall

2012-09-03 Thread Philippe Naudin
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

Re: [CentOS] NTP server problem behind firewall

2012-09-03 Thread Leonard den Ottolander
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

Re: [CentOS] NTP server problem behind firewall

2012-09-03 Thread Markus Falb
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

Re: [CentOS] NTP server problem behind firewall

2012-09-02 Thread Artifex Maximus
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

Re: [CentOS] NTP server problem behind firewall

2012-09-02 Thread Markus Falb
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

Re: [CentOS] NTP server problem behind firewall

2012-09-02 Thread Artifex Maximus
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

Re: [CentOS] NTP server problem behind firewall

2012-09-02 Thread Earl Ramirez
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

Re: [CentOS] ntp server

2010-07-07 Thread Blake Hudson
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 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] ntp server

2010-07-01 Thread Jerry Geis
> > 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 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] ntp server

2010-07-01 Thread Bowie Bailey
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

Re: [CentOS] ntp server

2010-07-01 Thread Jerry Geis
> > 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

Re: [CentOS] ntp server

2010-07-01 Thread Les Mikesell
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

Re: [CentOS] ntp server

2010-07-01 Thread Craig White
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

Re: [CentOS] ntp server

2010-07-01 Thread Brunner, Brian T.
> -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. >

Re: [CentOS] NTP server

2008-02-04 Thread Rainer Traut
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

RE: [CentOS] NTP server

2008-02-01 Thread Craig White
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 >

Re: [CentOS] NTP server

2008-02-01 Thread Stephen John Smoogen
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

RE: [CentOS] NTP server

2008-02-01 Thread Dennis McLeod
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

RE: [CentOS] NTP server

2008-02-01 Thread Jason Ross
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

RE: [CentOS] NTP server

2008-02-01 Thread James D. Parra
-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