Hai David, Thanks for reply,
I already ask to network admin to open udp 123 for time.nist.gov. And I checked my server at firewall log that could send udp 123 to time.nist.gov. But I checked no paket from time.nist.gov. Regards, nast On Fri, Jan 8, 2010 at 2:48 PM, David Woolley <da...@ex.djwhome.demon.invalid> wrote: > nast linux wrote: > >> >> I got the problem, my NTP server can not synchronize with external NTP >> server. >> >> Firewall. In particular these days, OS' firewall. > > As you are using a pool server, the other possibility, of trying to use a > V3 server with a V4 client, without setting the client downversion, > shouldn't apply. > > ntpdate is failing as well, which suggests extensive firewalling, as that > typically uses unprivileged ports. > > _______________________________________________ > questions mailing list > questions@lists.ntp.org > http://lists.ntp.org/listinfo/questions > _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions