r5 - 2017-06-03 - 19:23:29 - ShaneBishopYou are here: NTP >  Servers Web > PublicTimeServer000310
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.
  • The DNS name for gps1.otc.psu.edu changed to the current hostname; please use DNS
  • This hardware does not support rdate or daytime protocols; NTPv3 only

  • Server list entry maintainer:
ServerStratum StratumOne
CountryCode US PA
Hostname gps1.tns.its.psu.edu
IP Address
IPv6 Address 2610:8:7900:12:2a0:69ff:fe01:39e7
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 (GPS), TrueTime XL/DC NTP module
ServiceArea Internet, Internet2, 3ROX
AccessPolicy ClosedAccess
AccessDetails Closed access, except for stratum-2 servers providing synchronization to local networks of ten or more hosts; others by arrangement only.
NotificationMessage Yes



ServerContact John Balogh (JDB+NTP@psu.edu)
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