r2 - 2009-11-05 - 17:18:36 - SteveKosteckeYou are here: NTP >  Servers Web > PublicTimeServer000170
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.
  • clock.psu.edu is a CNAME for otc2.psu.edu

  • Server list entry maintainer:
ServerStratum StratumTwo
CountryCode US PA
Hostname clock.psu.edu
IP Address
IPv6 Address

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 secondary (stratum 2), Sun/Unix

AccessPolicy Select one...
AccessDetails Internet2, vBNS, CERFnet(AT&T IP Services), PSC/NCNE, CASC
NotificationMessage No

ServerContact John Balogh (JDB@psu.edu)
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