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- To: "chrony-users@xxxxxxxxxxxxxxxxxxxx" <chrony-users@xxxxxxxxxxxxxxxxxxxx>
- Subject: SV: [chrony-users] Certain NTS servers not synching, how to best troubleshoot ?
- From: Henning Svane <hsv@xxxxxxxxx>
- Date: Mon, 29 Jul 2024 22:55:50 +0000
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- Thread-topic: [chrony-users] Certain NTS servers not synching, how to best troubleshoot ?
Hi Laura
Netnod.se use the following ports 4123/udp and 4460/tcp for NTS. Netnod.se was one of the first to implement NTS, so it is a little different from newer installations.
https://www.netnod.se/netnod-time/how-to-use-nts
https://www.ietf.org/proceedings/106/slides/slides-106-ntp-nts-deployment-00.pdf
I am not sure if they also use 123/udp or if it is only for NTP
Regards
Henning
-----Oprindelig meddelelse-----
Fra: Laura Smith <n5d9xq3ti233xiyif2vp@xxxxxxxxxxxxx>
Sendt: 29. juli 2024 22:28
Til: chrony-users@xxxxxxxxxxxxxxxxxxxx
Emne: [chrony-users] Certain NTS servers not synching, how to best troubleshoot ?
I have a weird situation where I cannot get NTS working to the netnod.se series of servers (e.g. gbg1-ts.nts.netnod.se )
Other NTS server are working without issue (e.g. ntppool1.time.nl) so its not 4460 being blocked on a firewall.
What steps can I take to troubleshoot it ?
I've tried "tcpdump -npi ens3 host gbg1-ts.nts.netnod.se" but nothing comes up, even if I do a "chronyc offline gbg1-ts.nts.netnod.se" and "chronyc online gbg1-ts.nts.netnod.se" in a different window.
So I'm not sure how best to get some data to work on ?
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