01-07-2008
Problems with NTP
Hy,
I'm having problems with NTP synchronisation on one of the machines wich runs SCO 5.0.5Eb.
It should synchronize with one RedHat machine in local network, but it doesn't (all other machines are fine). It just falls behind after a while.
In /etc/ntp.conf i have only this entry:
server <IP_of_local_NTP_server>
(Should it be peer instead of server?)
There is no driftfile entry and also /etc/ntp.drift file does not exist.
I assume that this entry in ntp.conf is correct, but what about ntp.drift file and why does this fallback happen?
Tnx in advance!
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LEARN ABOUT OSF1
ntp.keys
ntp.keys(4) Kernel Interfaces Manual ntp.keys(4)
NAME
ntp.keys - Network Time Protocol (NTP) authentication key file
DESCRIPTION
The NTP standard specifies an extension to allow verification of the authenticity of received NTP packets and to provide an indication of
authenticity in outgoing packets. This is implemented in xntpd using the MD5 algorithm to compute the message-digest. The specification
allows any one of possibly 4 billion keys, numbered with 32-bit key identifiers, to be used to authenticate an association. The servers
involved in an association must agree on the key and key identifier used to authenticate their data, though they must each learn the key
and key identifier independently. In MD5, the keys are 64 bits (8 bytes). The xntpd daemon reads its keys from a file specified using the
-k command line option, or the keys statement in the configuration file. While key number 0 is fixed by the NTP standard (as 56 zero bits)
and may not be changed, one or more of the keys numbered 1 through 15 may be arbitrarily set in the keys file.
One of the keys may be chosen, by way of the configuration file requestkey statement, to authenticate run time configuration requests made
using the xntpdc(8) program. The latter program obtains the key from the terminal as a password, so it is generally appropriate to specify
the key chosen to be used for this purpose in ASCII format.
The NTP key file uses the same comment conventions as the configuration file. Key entries use a fixed format of the form: keyno type key
In this format: Is a positive integer. Is a single character that defines the format the key is given in. This is always M, representing
Message Digest (MD5) on Tru64 UNIX systems. Is the key itself. The MD5 algorithm key is a 1-to-8 character ASCII string. Because of the
simple tokenizing routine, you cannot use the following characters in an ASCII key: " " (space), "#" (number sign), "", "0, and " ". Note
that both the keys and the authentication scheme (MD5) must be identical between a set of peers sharing the same key number.
EXAMPLES
The following sample key file shows two defined NTP keys: 2 M RIrop8KPPvQvYotM # MD5 key as a random ASCII string 14 M sundial
# MD5 key as an ASCII string
FILES
Conventional name of the key file
RELATED INFORMATION
Commands: ntpdate(8), ntpq(8), xntpd(8), xntpdc(8)
Files: ntp.conf(4)
Network Administration delim off
ntp.keys(4)