[ntp:questions] UDP 123 Port restriction

folkert folkert at vanheusden.com
Sat Feb 12 23:47:17 UTC 2011


>> We are planing to deploy Network Time Server in our Organization.
>>
>> According to the architecture , Stratum 2 server will be responsible to
>> provide correct time to Stratum 3 server and client ( Other servers) will
>> synchronize with Stratum 3 server for obtaining correct time. Stratum 2
>> server will synchronize with Stratum 1  server.
>>
>> We will use NTP 4.2.6p3
>>
>> Is it mandatory to open UDP port 123  between Stratum 2 and Stratum 3
>> server also between Stratum 3 and Client Machine for time synchronization?
>>
>>
>> Can we use any customized port instead of UDP 123 for time
>> synchronization?
>
> You _can_ change the port number, but only by patching and costum  
> compiling your own version of the NTP source code.

Or put omnisync in between.
omnisync -M sntp -h host:port

http://www.vanheusden.com/time/omnisync/


Folkert

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