r16 - 2011-10-24 - 00:55:41 - LukeJMilitelloYou are here: NTP >  Support Web > ConfiguringNTP > ConfiguringRefclocks > RefclockUsers > GarminRefclockUsers
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.
REFACTOR See GarminRefclockUsersDev for discussion of this topic.

14.5. Garmin Refclock Users

NTP VersionSorted descending Operating System Computer Vendor and Model # Status Who
4.2.7p97 Windows XP SP3 Intel 1.9GHz Pentium 4 GPS 18 LVC works DavidTaylor
4.2.7p97 Windows-7 SP1 32-bit Intel 2.8GHz Pentium 4 HT GPS 18x LVC works, but need to separate NMEA (partly works) and PPS (works fine) DavidTaylor
4.2.7p178 Linux 2.6.37 AMD Athlon FX-62 GPS 18x LVC works with GPS_NMEA, required large (>1sec) time2 fudge with firmware 3.60. Using firmware 3.00 the time2 offset is smaller. LaszloHanyecz
4.2.7p220 FreeBSD 9 Intel Core2 T5500 GPS 18x LVC firmware 3.70 gauss.kenyonralph.com. works with GPS_NMEA and PPS_SYNC kernel, fudge flag1 1 flag2 0 flag3 1 time2 0.600 KenyonRalph
4.2.6p2 openSUSE 11.1 (i586) Kontron 986LCD-M GPS 18 LVC works with gpsd, SHM, PPS HaraldBrinkmann
4.2.6p4 Ubuntu 10.04 Intel Celeron 1.8GHz GPS 18x LVC firmware 3.70 Works, need to separate GPS_NMEA and PPS. Need's PPS patched Ubuntu kernel for Linux 2.6.32. Fudge time2 at 0.585. Server stats; Atlas Pbody LukeJMilitello
4.2.4 FreeBSD6 x86_64 18 LVC works KimSindalsen
4.2.4p4 Mandriva 2007.0 Athlon XP 2400+ GPS 18 LVC works with gpsd, shmpps DennisHilbergJr
4.2.4p4 FreeBSD 6.2 Athlon XP 1200Mhz GPS 18 LVC works with GPS_NMEA driver DennisHilbergJr
4.2.4p5 NetBSD 4.0 IBM Aptiva 200Mhz GPS 18 LVC works with GPS_NMEA driver PierreDubuc
4.2.4p5-a (1) FreeBSD 8.0 Intel Atom GPS 18 LVC works DavidTaylor
4.2.2 Ubuntu AMD Athlon X2 3600+ 18 LVC works gpsd SHM RandallPrentice

Related Topics: ConfiguringGarminRefclocks

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