r7 - 2017-06-07 - 16:01:05 - ShaneBishopYou are here: NTP >  Servers Web > PublicTimeServer000144
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-4.2.8p12 was released on 14 August 2018. It addresses 1 low-/medium-severity security issue in ntpd, 1 low-severity security issue in ntpq and ntpdc, and provides 27 non-security bugfixes and 4 other improvements over 4.2.8p11.

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.
  • alias darkcity.cerias.purdue.edu
  • This host does not support "daytime" -- only UDP-based NTP

Related Topics: TockCeriasPurdueEdu, HorologeCeriasPurdueEdu, TackCeriasPurdueEdu

ServerStratum StratumOne
CountryCode US IN
Hostname tick.cerias.purdue.edu
IP Address
IPv6 Address

UseDNS Yes
PoolMember Yes
ServerLocation CERIAS, Purdue University, West Lafayette, IN

GeographicCoordinates 40:25:33.2N, 86:54:54.7W (GPS)
ServerSynchronization NTP V3/V4 primary (GPS), Symmetricom TymServe 2100L
ServiceArea Internet2, CIC and midwest US
AccessPolicy RestrictedAccess
AccessDetails Open access to significant stratum 2 servers in the service areas. Please see our ntp WWW page before using this service.
NotificationMessage Yes
AutoKey No



ServerContact Gene Spafford (ntp-request@cerias.purdue.edu)
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