You can setup a your own NTP server following this howto: http://brainwreckedtech.wordpress.com/2008/08/25/howto-run-your-own-ntp-server-when-your-isp-blocks-ports/ and adapting it for CentOS, or you can use a workaround like trying to setup a cron job to run ntpdate every 15 minutes to sync system time with ntp.org public servers using unprivilleged port. 15 * * * * /usr/sbin/ntpdate -s -u -B pool.ntp.org -s option tells ntpdate to print output to syslog; -u tells it to use unprivilleged port; -B tell it to adjust the time incrementally as oppose to instantly. Then setup ntpd as a local ntp server for internal use. This ntpd uses it's localtime as the source instead of syncing from another ntp.org public server. On Wed, Jan 15, 2014 at 8:56 AM, Ku Wei Xiong <kuweixiong at gmail.com> wrote: > Dear all, > > I would need some advice as I am a beginner in CentOS. > > The question is as follows: > > How to set up timing if NTP was block by ISP? > > I have try many way such as link the timezone , getting from the hardware > clock.However , it is not the solution. > > Please advice. > > -- > Regards, > Ku Wei Xiong > 0166365831 > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos -- "The intuitive mind is a sacred gift and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift." (A. Einstein) "La mente intuitiva è un dono sacro e la mente razionale è un fedele servo. Noi abbiamo creato una società che onora il servo e ha dimenticato il dono." (A. Einstein) Fabrizio Di Carlo