> I recently added to the home network is Stratum-1 NTP server that gets it's time via Pi GPIO GPS module. Whether this has any real positive privacy or security implications, I do like the idea that I have significantly reduced outbound traffic to/from port 123 from the devices in home network
I like the way you think, and was thinking about some of the same. Could you share what solution you went with in terms of hardware? I am interested in using better than commodity time that could serve both NTP and precision time as well.
The benefits for better time, and local time are fairly impacting if you are doing anything with time sensitive computing (PKI, performance measurement, and audio are interests of mine).
I used this board from Uputronics[0] with optionally included active GPS antenna. Mostly because they were readily available, and there were few guides online for setting ntpd up on Pi using Uputronics board.
As a word of caution - it looks like most guides that I came across are outdated, or indeed have never produced a reliably (or at all) working NTPd setup. Instructions that lead me to the 'right' path is linked here[1]. I am still in the process of tuning GPS offset in my setup. But all in all, it's been a great learning experience into complexities of the protocol I've mostly taken for granted for a very long time.
I like the way you think, and was thinking about some of the same. Could you share what solution you went with in terms of hardware? I am interested in using better than commodity time that could serve both NTP and precision time as well.
The benefits for better time, and local time are fairly impacting if you are doing anything with time sensitive computing (PKI, performance measurement, and audio are interests of mine).