r3 - 2004-11-29 - 02:45:00 - RichardSchmidtYou are here: NTP >  Servers Web > PublicTimeServer000287
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.
ServerStratum StratumOne
CountryCode US DC
Hostname tock.usno.navy.mil
IP Address
UseDNS Yes
PoolMember No
ServerLocation U.S. Naval Observatory, Washington, DC
GeographicCoordinates 38:55:14.01 77:03:58.03 (GPS WGS84)
ServerSynchronization NTP V3 primary (USNO Master Clock 1,2 H-maser), HP9000/A500
ServiceArea Eastern Time Zone, others by arrangement
AccessPolicy RestrictedAccess
AccessDetails Open to MIL, GOV, other stratum 2's. Choose one of tick/tock/ntp2
NotificationMessage Yes
ServerContact Rich Schmidt (res@tuttle.usno.navy.mil)
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