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.

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Are you using Autokey in production? If so, please contact Harlan - he's got some questions for you.

Notes

• IPv6 is via a HE tunnel with some latency, so your mileage may vary.
• Feel free to e-mail any questions or problems you experience with this service, but remember that all of us are volunteers.
• I peer via Hurricane Electric, and am very close to Stratum 1 clock.fmt.he.net (same datacenter, actually).
• If your IPv4 RTT is greater than 50ms, consider another server. The server responds to pings.
• NTP pool statistics entry for time.jedsmith.org

Stratum 1 Peerings

# ntpq -p -n
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
+216.218.192.202 .PPS.            1 u   96  128  377    0.397    0.042   0.041
*216.218.254.202 .CDMA.           1 u   98  128  377    1.821    0.134   0.051
+209.81.9.7      .GPS.            1 u  110  128  377    0.982    0.160   0.165
-207.200.81.113  .ACTS.           1 u  101  128  377    1.761    2.888   0.047
-64.125.78.85    .ACTS.           1 u  101  128  377    2.065    4.896   0.067

-- JedSmith - 24 May 2009