r7 - 2014-12-22 - 07:05:07 - DavidTaylorYou are here: NTP >  Support Web > ConfiguringNTP > ConfiguringRefclocks > ConfiguringAtomRefclocks
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.
REFACTOR See ConfiguringAtomRefclocksDev for discussion of this topic.

6.1.1. Configuring ATOM (PPS) Refclocks

The ATOM refclock is built by default. Building is enabled/disabled by the option --enable-ATOM or --disable-ATOM in the 'configure' command line, for example: ./configure --enable-ATOM

The driver will look for the PPS signal on /dev/ppsX, where X is the unit number (0-4) on the server 127.127.22.X line in your ntp.conf file.

Note that some refclocks have builtin support for a PPS signal and do not currently use the ATOM driver. See bug_small.png Bug #557 and LoseThePerDriverPPSCode for more information.

Note that the current kernel-mode Windows PPS driver (serialPPS.sys download) does not support inverted polarity on the DCD line - it must be asserted (positive going) on the leading edge of the second.

Related Topics: AtomRefclockUsers

Edit | WYSIWYG | Attach | Printable | Raw View | Backlinks: Web, All Webs | History: r7 < r6 < r5 < r4 < r3 | More topic actions
 
SSL security by CAcert
Get the CAcert Root Certificate
This site is powered by the TWiki collaboration platform
IPv6 Ready
Copyright & 1999-2017 by the contributing authors. All material on this collaboration platform is the property of the contributing authors. Ideas, requests, problems regarding the site? Send feedback