Editing Network Time Protocol (section)

=== Reference implementation ===
The NTP [[reference implementation]], along with the protocol, has been continuously developed for over 20 years. Backwards compatibility has been maintained as new features have been added. It contains several sensitive algorithms, especially to discipline the clock, that can misbehave when synchronized to servers that use different algorithms. The software has been [[ported]] to almost every computing platform, including personal computers. It runs as a [[Daemon (computing)|daemon]] called [[ntpd]] under Unix or as a [[Windows service|service]] under Windows. Reference clocks are supported and their offsets are filtered and analysed in the same way as remote servers, although they are usually polled more frequently.<ref name="Mills2010" />{{rp|15–19}} This implementation was audited in 2017, finding 14 potential security issues.<ref name="jAgTl">{{cite web | url=https://wiki.mozilla.org/images/e/ea/Ntp-report.pdf | title=Pentest-Report NTP 01.2017 | publisher=Cure53 | date=2017 | access-date=2019-07-03 | archive-url=https://web.archive.org/web/20181201232241/https://wiki.mozilla.org/images/e/ea/Ntp-report.pdf | archive-date=2018-12-01 | url-status=live}}</ref>