Editing Network Time Protocol (section)

=== NTPsec ===
NTPsec is a [[Fork (software development)|fork]] of the reference implementation that has been systematically [[Hardening (computing)|security-hardened]]. The fork point was in June 2015 and was in response to a series of compromises in 2014.<ref>{{Cite web |last=Raymond |first=Eric S. |date=2017-03-30 |title=NTPsec: a Secure, Hardened NTP Implementation {{!}} Linux Journal |url=https://www.linuxjournal.com/content/ntpsec-secure-hardened-ntp-implementation |url-status=live |archive-url=https://archive.today/20240126231434/https://www.linuxjournal.com/content/ntpsec-secure-hardened-ntp-implementation |archive-date=2024-01-26 |access-date=2024-01-26 |website=[[Linux Journal]]}}</ref> The first production release shipped in October 2017.<ref name="TLIYY">{{cite web|url=https://ntpsec.org|title=The Secure Network Time Protocol (NTPsec) Distribution|access-date=2019-01-12|archive-url=https://web.archive.org/web/20190113232124/https://ntpsec.org/|archive-date=2019-01-13|url-status=live}}</ref> Between removal of unsafe features, removal of support for obsolete hardware, and removal of support for obsolete Unix variants, NTPsec has been able to pare away 75% of the original codebase, making the remainder easier to [[Software quality assurance|audit]].<ref name="Liska2016">{{cite book|first=Allan|last=Liska|title=NTP Security: A Quick-Start Guide|url=https://books.google.com/books?id=AB-1DQAAQBAJ&pg=PA80|date=December 10, 2016|publisher=Apress|isbn=978-1-4842-2412-0|pages=80–}}</ref> A 2017 audit of the code showed eight security issues, including two that were not present in the original reference implementation, but NTPsec did not suffer from eight other issues that remained in the reference implementation.<ref name="5CF55">{{cite web |url=https://wiki.mozilla.org/images/1/10/Ntpsec-report.pdf |title=Pentest-Report NTPsec 01.2017 |publisher=Cure53 |date=2017 |access-date=2019-07-03 |archive-url=https://web.archive.org/web/20190704001204/https://wiki.mozilla.org/images/1/10/Ntpsec-report.pdf |archive-date=2019-07-04 |url-status=live}}</ref>