TroubleshootingNTP < Support < NTP

Dec 18, 2016 NTP용 UDP 123 포트 - 제타위키 1 개요 [] NTP용 UDP 123 포트. NTP 시간 동기화를 위해 사용하는 UDP 포트; skinparam dpi 150 hide circle hide empty members hide method class NtpServer class MyComputer NtpServer<-- MyComputer : UDP 123 NTP Server Test

firewall - How to configure UFW to allow ntp to work

How to allow timesync over UDP port 123 (SNTP) and TCP

Configure firewall to enable NTP port 123 on RHEL7 Linux

Network Time Protocol (NTP), as specified in RFC 5905, uses port 123 even for modes where a fixed port number is not required, which makes it easier for remote attackers to conduct off-path attacks. References: [CVE-2019-11331], , [XFDB-159889] SG: 123 : udp: Network Time Protocol (NTP) - used for time synchronization (official) Wikipedia: 123 : tcp GRC | Port Authority, for Internet Port 123 Port 123 Background and Additional Information: Extremely accurate NTP servers are scattered all across the Internet. Many ISP routers run NTP servers and freely offer up the time to … NTP Port Number and Configuration Tutorial For Linux Local NTP uses the UDP port number 123 by default. NTP services run on UDP protocol because of the UDP simplicity and performative behavior. NTP is also a very simple protocol just like ask and get response manner which is very well suited with the connectionless UDP protocol. Reliable NTP Port TCP 123. As stated previously NTP uses UDP transmission protocol by default with port number 123. Port 123 (tcp/udp) - Online TCP UDP port finder -