https://ntpsec.org/

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19<h1>Welcome to NTPsec</h1>
20</div>
21<div id="content">
22<div id="preamble">
23<div class="sectionbody">
24<div class="quoteblock">
25<div class="content">"Perfection is achieved, not when there is nothing more to add, but
26when there is nothing left to take away."</div>
27<div class="attribution">
28&#8212; Antoine de Saint-Exup&eacute;ry
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31<div class="content">
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35<div class="paragraph"><p>Welcome to the NTPsec project - a secure, hardened, and improved
36implementation of Network Time Protocol derived from NTP Classic, Dave
37Mills&#8217;s original.</p></div>
38<div class="paragraph"><p>NTPsec, as its name implies, is a more secure NTP.  Our goal is to
39deliver code that can be used with confidence in deployments with the
40most stringent security, availability, and assurance requirements.</p></div>
41<div class="paragraph"><p>Towards that end we apply best practices and state-of-the art
42technology in code auditing, verification, and testing. We begin with
43the most important best practice: true open-source code review.  The
44NTPsec code is available in a public git repository. One of our goals
45is to support broader community participation.</p></div>
46</div>
47</div>
48<div class="sect1">
49<h2 id="_get_started_with_ntpsec">Get Started with NTPsec</h2>
50<div class="sectionbody">
51<div class="ulist"><ul>
52<li>
53<p>
54<a href="supported-platforms.html">Platform Support Policy</a>
55</p>
56</li>
57<li>
58<p>
59<a href="downloads.html">Downloads</a>
60</p>
61</li>
62<li>
63<p>
64<a href="https://docs.ntpsec.org/latest/build.html">Building and Installing the
65Distribution</a>
66</p>
67</li>
68<li>
69<p>
70<a href="https://docs.ntpsec.org/latest/quick.html">Quick Start Client
71Configurations</a>
72</p>
73</li>
74<li>
75<p>
76<a href="https://docs.ntpsec.org/latest/#man">Manual Pages</a>
77</p>
78</li>
79</ul></div>
80</div>
81</div>
82<div class="sect1">
83<h2 id="_learn_more_about_using_ntpsec">Learn More about using NTPsec</h2>
84<div class="sectionbody">
85<div class="ulist"><ul>
86<li>
87<p>
88<a href="FAQ.html">The inevitable FAQ</a>
89</p>
90</li>
91<li>
92<p>
93<a href="documentation.html">Documentation</a>
94</p>
95</li>
96<li>
97<p>
98<a href="license.html">Project licenses</a>
99</p>
100</li>
101<li>
102<p>
103<a href="channels.html">Communications channels</a>
104</p>
105</li>
106</ul></div>
107</div>
108</div>
109<div class="sect1">
110<h2 id="_the_project_behind_the_code">The project behind the code</h2>
111<div class="sectionbody">
112<div class="ulist"><ul>
113<li>
114<p>
115<a href="accomplishments.html">What we&#8217;ve accomplished</a>
116</p>
117</li>
118<li>
119<p>
120<a href="plans.html">What we plan to do</a>
121</p>
122</li>
123<li>
124<p>
125<a href="https://blog.ntpsec.org/">NTP Project Blog</a>
126</p>
127</li>
128<li>
129<p>
130<a href="contributor.html">Contribution policies, workflows, and conventions</a>
131</p>
132</li>
133<li>
134<p>
135<a href="getting-involved.html">How you can help</a>
136</p>
137</li>
138<li>
139<p>
140<a href="core-team.html">The core team</a>
141</p>
142</li>
143<li>
144<p>
145<a href="announcement.html">Project announcement</a>
146</p>
147</li>
148<li>
149<p>
150<a href="https://liberapay.com/NTPsec/donate">Help fund NTPsec.  Donation via Liberapay</a>
151</p>
152</li>
153<li>
154<p>
155<a href="https://co.clickandpledge.com/?wid=126142">Help fund NTPsec. Donation via Click and Pledge</a>
156</p>
157</li>
158<li>
159<p>
160<a href="https://www.spi-inc.org/projects/ntpsec">Help fund NTPsec. Donation via PayPal to Software in the Public Interest</a>
161</p>
162</li>
163</ul></div>
164</div>
165</div>
166<div class="sect1">
167<h2 id="_outreach">Outreach</h2>
168<div class="sectionbody">
169<div class="ulist"><ul>
170<li>
171<p>
172<a href="security.html">Security Researchers and Vulnerability Reports</a>
173</p>
174</li>
175<li>
176<p>
177<a href="history.html">The story of NTPsec</a>
178</p>
179</li>
180<li>
181<p>
182<a href="press.html">Press and Media Resources</a>
183</p>
184</li>
185</ul></div>
186</div>
187</div>
188</div>
189<div id="footnotes"><hr></div>
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191<div id="footer-text">
192Last updated
193 2026-09-20 04:00:57 UTC
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