r6 - 2009-11-05 - 21:21:53 - JohnBaloghYou are here: NTP >  Servers Web > PublicTimeServer000312
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.
  • wwv.otc.psu.edu is one CNAME for this service
  • wwv.tns.its.psu.edu is the currently advertised CNAME
  • The IP address changed from to the current address sometime after mid-year 1999; please use DNS

  • Server list entry maintainer: .JohnBalogh
ServerStratum StratumOne
CountryCode US PA
Hostname wwv.tns.its.psu.edu
IP Address
IPv6 Address

UseDNS Yes
PoolMember No
ServerLocation Penn State University, University Park, PA
GeographicCoordinates 40:47:58.1N, 77:51:44.8W (USGS 40077-G7-TF-024)
ServerSynchronization NTP V3 primary (Traconex/PSTI-1020 WWV clock), Sun/Unix
ServiceArea Internet2, PSC/3ROX
AccessPolicy OpenAccess

NotificationMessage Yes

ServerContact John Balogh (JDB+NTP@psu.edu)
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Servers.WwvTnsItsPsuEdu moved from Servers.WwvOtcPsuEdu on 2009-11-05 - 21:21 by JohnBalogh
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