dedourek at unb.ca
Sat May 26 23:48:26 UTC 2007
Vivek J. Patankar wrote:
> Manuel Arostegui Ramirez wrote:
>> El Domingo, 20 de Mayo de 2007 03:01, Lux Zhang escribió:
>>> I tried to used ntpd to sync time, but always got a failure error:
>>> [root at home]# /sbin/service ntpd restart
>>> Shutting down ntpd: [ OK ]
>>> ntpd: Synchronizing with time server: [FAILED]
>>> Starting ntpd: [ OK ]
>>> how to fix this?
>> Some kind of firewall blocking that connection?
> Keep in mind that you need to open port 123 TCP & UDP for it to work.
> I was having problems with time synchronization in servers in a DMZ
> and opening just 123 TCP didn't work.
In fact, ntp normally uses UDP port 123. The last time I looked,
it did NOT use TCP port 123 at all. Therefore, I suggest that you
should NOT open TCP port 123.
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