Nov 29, 2017 · sudo yum erase ntp* sudo yum -y install chrony sudo service chrony start (Note: the service may also be called chronyd sudo service chronyd start) Alternatively, just modify your existing NTP config by adding the line server 169.254.169.123 prefer iburst. On Windows you can run the following commands in PowerShell or a command prompt:
NTP and ACL issues - Cisco Community Hello, I have a 7200 series router that I would like to have sync its time with a public NTP server. Time sync is actually working great. My problem is that when I run a port scanner I see that UDP 123 is in open state. Here is my config regarding NTP. I would like UDP 123 to be closed. Is there a 29.11. Clock Synchronization with NTP - FreeBSD On FreeBSD, the built-in ntpd can be used to synchronize a system's clock. Ntpd is configured using rc.conf (5) variables and /etc/ntp.conf, as detailed in the following sections.. Ntpd communicates with its network peers using UDP packets. Any firewalls between your machine and its NTP peers must be configured to allow UDP packets in and out on port 123. NTP AMP - Pastebin.com
Windows Time follows the NTP specification, which requires the use of UDP port 123 for all time synchronization communication. This port is reserved by Windows Time and remains reserved at all times. Whenever the computer synchronizes its clock or provides time to another computer, that communication is performed on UDP port 123.
linux - How to prevent ntpd to listen on 0.0.0.0:123 ntpd listens on numerous interfaces by default, I only want it to listen on 127.0.0.1:123 since I only want the localhost to sync the time. How to do that, I tried by editing /etc/default/ntp on Debian Wheezy: NTPD_OPTS='-4 -I 127.0.0.1' But it still listens globally on 0.0.0.0:123. Any ideas?
ntp client listening to port 123? — The IT Networking
ntpd listens on numerous interfaces by default, I only want it to listen on 127.0.0.1:123 since I only want the localhost to sync the time. How to do that, I tried by editing /etc/default/ntp on Debian Wheezy: NTPD_OPTS='-4 -I 127.0.0.1' But it still listens globally on 0.0.0.0:123. Any ideas? NTP - The Wireshark Wiki