Technical data

Configuring and Managing NTP
12.8 NTP Utilities
• It makes it more difficult for topologically remote hosts to request
configuration changes to your server.
To run NTPDC, enter the following command:
$ RUN SYS$SYSTEM:TCPIP$NTPDC.EXE
At the NTPDC> prompt, enter the appropriate type of command from the
following list:
• Interactive commands
• Control commands
• Run-time configuration request commands
12.8.3.1 NTPDC Interactive Commands
Interactive commands consist of a command name followed by one or more
keywords. The interactive commands are:
•
help [ command_keyword ]
Enter a question mark (?) to display a list of all the command keywords
known to this version of NTPDC. Enter a question mark followed by a
command keyword to display information about the function and use of the
command.
•
host hostname
Set the host to which future queries will be sent. The hostname can be either
a host name or a numeric address.
•
hostnames [ yes | no ]
If you specify yes , host names are displayed. If you specify no , numeric
addresses are displayed instead. The default is yes unless you include the -n
option on the command line, as described in Table 12–4.
• keyid key-ID
This command allows the specification of a key number to be used to
authenticate configuration requests. This must correspond to a key number
the server has been configured to use for this purpose.
• quit
Exits NTPDC.
•
passwd
This command prompts you to type in a password (not echoed) that will be
used to authenticate configuration requests. The password must correspond
to the key configured for use by the NTP server for this purpose if such
requests are to be successful.
• timeout milliseconds
Specify a timeout period for responses to server queries. The default is about
8000 milliseconds (8 seconds). Because NTPDC retries each query once after
a timeout, the total waiting time for a timeout will be twice the timeout value
set.
12–18 Configuring and Managing NTP