Editing MD5 keys on the NTP Client
Network Time Protocol (NTP) does not permit comments in the ntp.keys files. Inserting
comments will prevent the ntp.keys files from being parsed correctly and turns off
authentication at initialization.
Sample information in a client “ntp.keys” file might look like:
1 M symmetricom
2 M TTXL-GPS
When you invoke the NTP client at the command line, use the following options:
– b
to turn on broadcast reception
– k /etc/ntp.keys
to specify the name and location of the keys file
– d
for debugging.
An example command line might look like:
ntpd –d –d –d –b –k /etc/ntp.keys
Important lines in the ntp.conf file of the ntp client (not server) are:
trusted key 1 2
If you do not use MD5 authentication, remove # from “#disable auth
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