r1 - 2008-03-03 - 15:15:20 - DavidNolanYou are here: NTP >  Servers Web > StratumTwoTimeServers > PublicTimeServer000521
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.

  • Server list entry maintainer:
ServerStratum StratumTwo
CountryCode US
Hostname ac-ntp1.net.cmu.edu
IP Address
IPv6 Address

UseDNS Yes
PoolMember No
ServerLocation Carnegie Mellon University, Pittsburgh, PA
GeographicCoordinates Lat/Long: N 4026.6' W 7956.5'
ServerSynchronization Two local GPS clocks

AccessPolicy OpenAccess
AccessDetails netdev@andrew.cmu.edu
NotificationMessage No
AutoKey No

ServerContact netdev@andrew.cmu.edu
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