User manual

Masterclock RC 500 User Manual – v2014.01.01
26
NTP SERVER NAMES – By default the [Use NTP server
provided by the DHCP server] box is checked and a
primary NTP server address is displayed. If you wish
to uncheck the box and provide your own server
addresses for both primary and secondary servers,
do so here.
NTP CLIENT AUTHENTICATION SETTINGS – This
window permits the entering of up to 15 MD5 key
values to be trusted or allowed. Primary client
settings permit the entry of a primary server key
number, a secondary server key number and a
broadcast key number.
NTP ADVANCED SETTINGS – Under most typical
operating circumstances it is not necessary, nor is it
suggested, to change the “Advanced Settings”
options.
NTP ADVANCED SETTINGS PARAMETERS
This allows for setting the NTP mode and parameters of the SNTP client in the network clock.
The default TCP/UDP port for NTP service is 123.
Some NTP/SNTP servers will expect NTP clients to operate on port 123.