https://ittechnetworkk.co.uk/tags/ntp/ Recent content in Ntp on ittechnetworkk Hugo en-US Thu, 02 Apr 2026 12:48:42 +0200 https://ittechnetworkk.co.uk/projects/esp32-ntp-server/ Thu, 02 Apr 2026 12:48:42 +0200 https://ittechnetworkk.co.uk/projects/esp32-ntp-server/ <p>I built a <strong>Stratum 2 NTP time server</strong> that runs on an ESP32, serves accurate time to every device on my local network, and looks good doing it — complete with a color TFT display and a web dashboard you can manage from your phone.</p> <p><img src="https://ittechnetworkk.co.uk/projects/esp32-ntp-server/hardware-setup.jpg" alt="Hardware setup"></p> <hr> <h2 id="why-build-your-own-ntp-server">Why Build Your Own NTP Server?</h2> <p>A local NTP server means:</p> <ul> <li><strong>Faster sync</strong> — sub-millisecond responses instead of 20-50ms round trips</li> <li><strong>Works offline</strong> — your LAN keeps time even if your internet goes down</li> <li><strong>One upstream connection</strong> — the ESP32 syncs to the internet; everything else talks to it</li> <li><strong>Visibility</strong> — you can see exactly which devices are requesting time and how often</li> </ul> <p>And honestly? It&rsquo;s a fun weekend project.</p> https://ittechnetworkk.co.uk/posts/ntp/ Tue, 13 May 2025 21:23:07 +0200 https://ittechnetworkk.co.uk/posts/ntp/ <p>In modern networks, accurate time synchronization is crucial for tasks such as logging, authentication, and system coordination. Network Time Protocol (NTP) is a widely used protocol that allows devices on a network to synchronize their clocks with a reliable time source. This guide will walk you through the configuration of NTP on Cisco devices, including manual time setup, using a device as an NTP server, authentication, and debugging.</p>