NTP users are strongly urged to take immediate action to ensure that their NTP daemons are not susceptible to being used in distributed denial-of-service (DDoS) attacks. Please also take this opportunity to defeat denial-of-service attacks by implementing Ingress and Egress filtering through BCP38.

ntp-4.2.8p15 was released on 23 June 2020. It addresses 1 medium-severity security issue in ntpd, and provides 13 non-security bugfixes over 4.2.8p13.

Please see the NTP Security Notice for vulnerability and mitigation details.

---

Are you using Autokey in production? If so, please contact Harlan - he's got some questions for you.

This time server operates in NTP version 4 in accordance with RFC5905 and any corresponding RFCs which update 5905. NTPv4 is reverse compatible with NTP version 3.

All NTP requests to this server should be NTPv3 or NTPv4 compliant. Older NTP versions are not supported.

Access to this system is open for private Stratum 2 servers servicing ten or more hosts/clients, other uses should be done by prior approval with the server operator.

This server synchronizes with the following servers (links to their support.ntp.org pages):

• rjbeilstein.org
• clock.nyc.he.net
• tick.usno.navy.mil
• tock.usno.navy.mil
• ntp2.usno.navy.mil

• Server list entry maintainer:
  • Set ALLOWTOPICCHANGE = ThomasWard