r5 - 2008-10-14 - 19:34:11 - RafaelSzendrodiYou are here: NTP >  Servers Web > PublicTimeServer000199
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.

  • CNAME ntp-s1.pads.ufrj.br
  • Note: IP addresses (IPv4 and IPv6) are subject to change, please use DNS instead!
  • Performance statistics are available at http://rrd.pads.ufrj.br/public_ntp

ServerStratum StratumOne
CountryCode BR
Hostname ntps1.pads.ufrj.br
IP Address
IPv6 Address 2001:12f0:4c1:6643::5
UseDNS Yes
PoolMember Yes
ServerLocation Laboratory for the Processing of Analog and Digital Signals (PADS), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
GeographicCoordinates Lat: 2251.7031'S. Lon: 04313.7045'W. Alt: 25m
ServerSynchronization NTP V4 Primary (Tyco Electronics A1029-B GPS Module Receiver with internal 1 PPS output signal and SANAV RV-16 external active antenna), PC/Linux with nanokernel
ServiceArea Brazil, Latin America and Caribbean
AccessPolicy OpenAccess
AccessDetails Please limit to two peer hosts (preferentially stratum 2 servers) per domain. Clients (end-users) should use only stratum 2 servers for synchronization.
NotificationMessage No
AutoKey No

ServerContact Rafael Jorge Csura Szendrodi (szendro@pads.ufrj.br).
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