r6 - 2012-07-22 - 03:32:50 - 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-4.2.8p10 was released on 21 March 2017. It addresses 6 medium- and 5 low-severity security issues, 4 informational security topics, 15 bugfixes, and contains other improvements over 4.2.8p9.

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 2001:1291:200:8371::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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