r7 - 2011-06-07 - 20:42:03 - SteveKosteckeYou are here: NTP >  Support Web > ConfiguringNTP > ConfiguringRefclocks > RefclockUsers > WWVBRefclockUsers
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-4.2.8p11 was released on 27 February 2018. It addresses 2 low-/medium-, 1 informational-/medium-, and 2 low-severity security issues in ntpd, 1 medium-severity security issue in ntpq, and provides over 65 non-security bugfixes and other improvements over 4.2.8p10.

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.
REFACTOR See WWVBRefclockUsersDev for discussion of this topic.

14.19. WWVB Refclock Users

NTP Version Operating System Computer WWVB Receiver Status Who
4.2.0-1.1161 FreeBSD 5.4 433 MHz PC Spectracom 8170 OK JohnAckermann
4.2.5p8 dev FreeBSD 6.2 1 Ghz PC Spectracom NetClock2 OK RogerWiechman
4.2.4p4 FreeBSD 6.2 Athlon 650Mz Ultralink 325 OK DennisHilbergJr
4.2.5p117@1.1730-o Linux/2.6.24.2 PII/400 Spectracom Netclock/2 works StevenBjork

Related Topics: ConfiguringWWVBRefclocks

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