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What is the best way to keep the system clock synchronized? I have looked at ntp and netdate. Is one good over the other? Basically I want to know if what is the most secure way to keep the system clock insync. netdate will require me to open up some port 37... is this safe? ntp also... (1 Reply)
i have an HP UNIX box w/c acts as ntp server... I tried to change the time plus 8 minutes... the problem is that the other HP UNIX ntp client did not follow the time... when I tried to restart ntp client... using stop start it only sync to the server once... when I issue the command "ntpq -p", w/c... (2 Replies)
Hi Friends,
I want a shell script which will move certain .jar files from a specified location (say /publish/content) to (/publish/archive) on every saturday morning 6 am.
One more thing to add is that before moving files it must check free space at (/publish/archive), if it is more than 60 %... (7 Replies)
All here, thank you for listening. Now I've set up a Linux NTP server by adding a external windows NTP server in /etc/ntp.conf. Then I start the ntpd daemon. But how often does the Linux NTP server update its time with the external NTP server? I've looked up everywhere but found no information... (1 Reply)
hello all,,
am trying to do a time synchronization between a ntp server and a client, but facing some problems in doing so:
i run the ntpdate in debug mode and this is what i got. please help me out..
# ntpd -d -u 172.22.1.207
ntpd 4.2.2p1@1.1570-o Sun Aug 28 19:21:03 UTC 2011 (1)... (1 Reply)
Good morning,
My first post and first visit, so hello. I have been asked to see if one of our Linux boxes can have it's time sync automatically because the person who built the system has told our staff it cannot be done. To me that raised some flags because although I am no Linux expert, I just... (12 Replies)
Discussion started by: YSupport
12 Replies
7. Post Here to Contact Site Administrators and Moderators
Dear All,
Today, somewhere around 7:30 GMT (2:30 PM Eastern Time) www.unix.com will go down for what we hope is around 15 - 20 minutes as we change out some hardware on the server.
Thank you for your patience and support.
Neo (0 Replies)
I've scheduled few jobs using cron. But they are not running .....
What might be the possible reasons ?? Also tell me how to troubleshoot.............
Please help me .......
Thanks in Advance. (2 Replies)
There is one server in my company where the time is out of sync.
When I checked (compared with other servers whose time is correct), the XNTPD variable in /etc/rc.config.d/netdaemons was set as 0.
I changed this to 1, and tried restarting the xntpd process with :
# /sbin/init.d/xntpd start
... (4 Replies)
Discussion started by: anaigini45
4 Replies
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)