04-08-2008
If by "trusted" you mean you have hosts.deny or firewall rules or something, then you still need to tell us more about those.
Now that you have it in /etc/hosts and have checked that you can ping by name (you have, yes?) it's probably better to put in the host name from /etc/hosts
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi.
i was wondering if anyone can show me or direct me on setting up a ntp server under redhat.. Is there any howtos so i can get familar to it "any good sites" (3 Replies)
Discussion started by: souldier
3 Replies
2. Linux
RH 7.2
I have 2 unrelated questions -
1.) I have been able to configure and run ntp but cannot figure out how to start the service upon reboot. I have read the man pages for ntsysv - this is a manual action, but I want to drop a tarball of config files on a new installation and cannot... (1 Reply)
Discussion started by: jalburger
1 Replies
3. Solaris
All,
How do you set a Solaris 9 server which received ntp updates from a ntp server to broadcast them on a local subnet. I have created a /etc/inet/ntp.conf file to receive the updates from a server on network and need to make this server become like a ntp relay from the main server.
Any... (1 Reply)
Discussion started by: bubba112557
1 Replies
4. IP Networking
Hello Guys,
i have a problem my local server is not getting synchronized with ntpd server.
1)ntpq -p is giving the following output
remote refid st t when poll reach delay offset jitter
==============================================================================
... (9 Replies)
Discussion started by: mannam srinivas
9 Replies
5. Red Hat
Hi All....
I need to configure NTP server in my network, which is heterogeneous, containing Linux as well as windows systems. I'm planning to configure it on RHEL 5.0. What are the prerequisites for this and do I need to register this server?
Can anyone give me as many information as... (1 Reply)
Discussion started by: Amol21
1 Replies
6. Linux
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)
Discussion started by: MichaelLi
1 Replies
7. Linux
Hi folks, I have developed a Linux server for my customer. After migrating the server to my customer site, I was trying to sync its time to the NTP time servers at my customer site.
Below is the ntp.conf:
% vi /etc/ntp.conf
# Permit time synchronization with our time source, but do not
# permit... (2 Replies)
Discussion started by: kimurayuki
2 Replies
8. HP-UX
Hi
I wonder if its possible to setup NTP clients running HP-UX o.s. from a solaris 10 NTP server?
FR (3 Replies)
Discussion started by: fretagi
3 Replies
9. Red Hat
Hi,
I have two ntp servers in my cluster and I want all the nodes in my cluster to sync with either of the ntp servers or just one. Unfortunately it keep rotating the sync, between my ntp server 1, ntp server 2 and local. Is there anyway I can change the sync to avoid local?
# ntpq -p
... (3 Replies)
Discussion started by: pjeedu2247
3 Replies
10. Linux
Hello
I need to create NTP server for all my devices, What is the best OS for NTP Server? "CentOS, Redhat, Ubuntu "
I tried before Ubuntu but some of device not detect the server
Need your recommendation
Thank you (2 Replies)
Discussion started by: moudmm
2 Replies
LEARN ABOUT ULTRIX
ntp.conf
ntp.conf(5) File Formats Manual ntp.conf(5)
Name
ntp.conf - Network Time Protocol configuration file
Description
The file is the configuration file for the Network Time Protocol (NTP) daemon, This file must be configured on your system before running
Any host names that you specify in the file must have an entry in the file, or an entry in the master database, if the database is being
served to your system by BIND/Hesiod or Yellow Pages.
The file has four entry formats:
trusting no
This entry guarantees that your system synchronizes only to the NTP servers identified in the peer and server entries specified. Dig-
ital recommends that all systems include the entry.
peer server
This entry identifies server as one of the NTP servers that your system trusts, and from which your system will accept time synchro-
nization. Your system may also provide time synchronization to this server. Servers can be identified by host name or internet
address.
NTP servers should be configured with entries.
server server
This entry identifies server as one of the NTP servers that your system trusts, and from which your system will accept time synchro-
nization. Your system can not provide time synchronization to this server. Servers can be identified by host name or internet
address.
NTP clients should be configured with entries.
peer /dev/null LOCL 1 -5 local
This entry identifies your system as a local reference clock. A local reference clock is the most accurate system clock available at
your site. If you receive time synchronization from the Internet NTP service, you should not include this entry on any of your sys-
tems. At most, one system in a set of nodes running should be identified as a local reference clock.
A host which specifies this entry should not specify any or entries.
Examples
This is a sample configuration file for an NTP client which receives time synchronization from the NTP servers: and Lines beginning with a
number sign (#) are comments.
#
# NTP Configuration File
# This file is mandatory for the ntpd daemon
#
#
#
# ** A L L **
#
# "trusting no" prevents this host from synchronizing
# to any host that is not listed below. It is recommended
# that all hosts include the line "trusting no".
#
trusting no
#
#
# ** S E R V E R **
#
# If you are configuring a server, use "peer" entries to
# synchronize to other NTP servers. For example, server1,
# server2, and server3.
#
#peer server1
#peer server2
#peer server3
#
#
#
#
# ** C L I E N T **
#
# If you are configuring a client, use "server" entries to
# synchronize to NTP servers. For example, server1, server2,
# and server3.
#
server server1
server server2
server server3
#
#
#
# ** L O C A L R E F E R E N C E C L O C K **
#
# If you are configuring a local reference clock, include the
# following entry and the "trusting no" entry ONLY.
#
#peer /dev/null LOCL 1 -5 local
#
See Also
ntp(1), ntpd(8), ntpdc(8)
RFC 1129--Internet time synchronization: The Network Time Protocol
Introduction to Networking and Distributed System Services
ntp.conf(5)