Provided by: openntpd_3.7p1-1ubuntu1_i386
ntpd.conf - Network Time Protocol daemon configuration file
This manual page describes the format of the ntpd(8) configuration file.
It has the following format:
Empty lines and lines beginning with the ‘#’ character are ignored.
Keywords may be specified multiple times within the configuration file.
They are as follows:
listen on address
Specify a local IP address or a hostname the ntpd(8) daemon
should listen on. If it appears multiple times, ntpd(8) will
listen on each given address. If ‘*’ is given as an address,
ntpd(8) will listen on all local addresses. ntpd(8) does not
listen on any address by default. For example:
listen on *
listen on 127.0.0.1
listen on ::1
Specify the IP address or the hostname of an NTP server to
synchronize to. If it appears multiple times, ntpd(8) will try
to synchronize to all of the servers specified. If a hostname
resolves to multiple IPv4 and/or IPv6 addresses, ntpd(8) uses the
first address. If it does not get a reply, ntpd(8) retries with
the next address and continues to do so until a working address
is found. For example:
To provide redundancy, it is good practice to configure multiple
servers. In general, best accuracy is obtained by using servers
that have a low network latency.
As with server, specify the IP address or hostname of an NTP
server to synchronize to. If it appears multiple times, ntpd(8)
will try to synchronize to all of the servers specified. Should
the hostname resolve to multiple IP addresses, ntpd(8) will try
to synchronize to all of them. For example:
/etc/ntpd.conf default ntpd(8) configuration file
The ntpd.conf file format first appeared in OpenBSD 3.6.