# Server operators **URL:** https://community.ntppool.org/c/server-operators/6.md?page=1 [Latest](https://community.ntppool.org/latest.md) · [Categories](https://community.ntppool.org/categories.md) · [Tags](https://community.ntppool.org/tags.md) **Page:** 2 --- ## [Entry level GPS Stratum 1 NTP Server](https://community.ntppool.org/t/entry-level-gps-stratum-1-ntp-server/4638)
**Author:** [@Dave](https://community.ntppool.org/u/Dave)\ **Replies:** 6\ **Last updated:** [August 28, 2026, 3:00pm UTC](https://community.ntppool.org/t/entry-level-gps-stratum-1-ntp-server/4638 "2026-08-28T15:00:27Z")
Thought this device would be useful for anyone thinking of joining the NTP Pool on a budget. It allows someone to learn about Stratum 1 NTP time serving, without making a large commitment on hardware or software configur… --- ## [20260822 - Are there currently issues with the NTP management systems or is it just me?](https://community.ntppool.org/t/20260822-are-there-currently-issues-with-the-ntp-management-systems-or-is-it-just-me/4644)
**Author:** [@gombadi](https://community.ntppool.org/u/gombadi)\ **Replies:** 3\ **Last updated:** [August 22, 2026, 7:45pm UTC](https://community.ntppool.org/t/20260822-are-there-currently-issues-with-the-ntp-management-systems-or-is-it-just-me/4644 "2026-08-22T19:45:01Z")
Hi Just trying to add a server and seeing some issues. Getting the same result doing an NTP check. Getting this response - The status page is green but the graphs do not seem to be showing anything for the last week… --- ## [Which GPS Raspberry Pi hat for stratum 1 server?](https://community.ntppool.org/t/which-gps-raspberry-pi-hat-for-stratum-1-server/1580)
**Author:** [@lammert](https://community.ntppool.org/u/lammert)\ **Replies:** 8\ **Last updated:** [August 20, 2026, 8:50am UTC](https://community.ntppool.org/t/which-gps-raspberry-pi-hat-for-stratum-1-server/1580 "2026-08-20T08:50:12Z")
My current Stratum 1 server is a Raspberry Pi connected with a Garmin 18x LVC GPS receiver. This is a general-purpose GPS receiver which I previously used with a normal x86 server. The good thing is that it has a long ca… --- ## ["Client distribution" statistic - can you ELI5?](https://community.ntppool.org/t/client-distribution-statistic-can-you-eli5/3644)
**Author:** [@n1zyy](https://community.ntppool.org/u/n1zyy)\ **Replies:** 21\ **Last updated:** [August 19, 2026, 5:39pm UTC](https://community.ntppool.org/t/client-distribution-statistic-can-you-eli5/3644 "2026-08-19T17:39:02Z")
I feel like this is a dumb question, in part because Ask explained it previously in what seems like simple terms, but I am finding that I still don’t fully get it. To use a concrete example, from a server of mine in Kore… --- ## [Server abuse in Philippines](https://community.ntppool.org/t/server-abuse-in-philippines/4179)
**Author:** [@jnd](https://community.ntppool.org/u/jnd)\ **Replies:** 25\ **Last updated:** [August 8, 2026, 6:04pm UTC](https://community.ntppool.org/t/server-abuse-in-philippines/4179 "2026-08-08T18:04:01Z")
I came to check upon my servers and found out that my VPS in Philippines is suffering too many requests, even beyond the provided bandwidth allocation (30 Mbps). What’s worse, the incoming requests aren’t subsiding after… --- ## [Documentation: time.orlinum.fr](https://community.ntppool.org/t/documentation-time-orlinum-fr/4593)
**Author:** [@Orlinum](https://community.ntppool.org/u/Orlinum)\ **Replies:** 1\ **Last updated:** [July 26, 2026, 2:42pm UTC](https://community.ntppool.org/t/documentation-time-orlinum-fr/4593 "2026-07-26T14:42:32Z")
Hi, As a follow-up to my previous post introducing myself to the NTP Pool (Hello, I am Orlinum. Nice to meet you ...), I am sharing the documentation for the Stratum 1 node time.orlinum.fr. Available at: https://doc.ti… --- ## [Using an NTP-server behind NAT, it works! After testing a lot. No not many routers/OS can handle it. Really not many](https://community.ntppool.org/t/using-an-ntp-server-behind-nat-it-works-after-testing-a-lot-no-not-many-routers-os-can-handle-it-really-not-many/4580)
**Author:** [@Bas](https://community.ntppool.org/u/Bas)\ **Replies:** 39\ **Last updated:** [July 22, 2026, 3:00pm UTC](https://community.ntppool.org/t/using-an-ntp-server-behind-nat-it-works-after-testing-a-lot-no-not-many-routers-os-can-handle-it-really-not-many/4580 "2026-07-22T15:00:23Z")
Hi all, You know me, have been fighting routers for a long time. Finally cracked it. There is so much crap around, from opensource to expensive. They all fail, and it’s so stupid they fail! It makes no sense. BTW, I’… --- ## [Modem/Routers slowdown on heavy traffic](https://community.ntppool.org/t/modem-routers-slowdown-on-heavy-traffic/4224)
**Author:** [@Bas](https://community.ntppool.org/u/Bas)\ **Replies:** 182\ **Last updated:** [July 14, 2026, 10:34am UTC](https://community.ntppool.org/t/modem-routers-slowdown-on-heavy-traffic/4224 "2026-07-14T10:34:09Z")
Hi all, I have talked about this many times, and I have solved the heavy NAT problem. But there is another problem, far more serious for me. The number of NAT-session is solved because other people jumped in and helped… --- ## [Should I overcommit netspeed?](https://community.ntppool.org/t/should-i-overcommit-netspeed/4574)
**Author:** [@robinpie](https://community.ntppool.org/u/robinpie)\ **Replies:** 3\ **Last updated:** [July 14, 2026, 3:10am UTC](https://community.ntppool.org/t/should-i-overcommit-netspeed/4574 "2026-07-14T03:10:48Z")
I understand that netspeed just determines what proportion of requests get routed to you and is not a reflection of actual data usage. I have my netspeed set to 1Gbps (which is my VPS’s actual advertised network speed) a… --- ## [Puzzling Rate Limiting for Some Monitors](https://community.ntppool.org/t/puzzling-rate-limiting-for-some-monitors/4569)
**Author:** [@Kets\_One](https://community.ntppool.org/u/Kets_One)\ **Replies:** 20\ **Last updated:** [July 13, 2026, 8:22pm UTC](https://community.ntppool.org/t/puzzling-rate-limiting-for-some-monitors/4569 "2026-07-13T20:22:14Z")
Hi all, I’ve been facing a puzzling issue with rate limiting for which i hope you could assist in understanding and fixing. I run a number of NTP servers (IPv6-only) in the pool on various devices. However, some monit… --- ## [Chrony refclock PHC issue](https://community.ntppool.org/t/chrony-refclock-phc-issue/4544)
**Author:** [@marco.davids](https://community.ntppool.org/u/marco.davids)\ **Replies:** 2\ **Last updated:** [June 11, 2026, 2:44pm UTC](https://community.ntppool.org/t/chrony-refclock-phc-issue/4544 "2026-06-11T14:44:53Z")
I ran into an issue with Chrony today that I would like to share. If @mlichvar (or anyone else) has an explanation, it could be useful for others in this community as well. I recently upgraded from Chrony 4.5 on Ubuntu … --- ## [How do you monitor your NTP server?](https://community.ntppool.org/t/how-do-you-monitor-your-ntp-server/4418)
**Author:** [@Obvious](https://community.ntppool.org/u/Obvious)\ **Replies:** 9\ **Last updated:** [June 8, 2026, 9:23pm UTC](https://community.ntppool.org/t/how-do-you-monitor-your-ntp-server/4418 "2026-06-08T21:23:12Z")
Hello, I am new to the NTP universe and I would like to know how you monitor your NTP server continuously, not only with chronyc commands? --- ## [NTP Stratum1 Server - ask for opinion of dashboard](https://community.ntppool.org/t/ntp-stratum1-server-ask-for-opinion-of-dashboard/4510)
**Author:** [@meszaros.norbert](https://community.ntppool.org/u/meszaros.norbert)\ **Replies:** 9\ **Last updated:** [May 29, 2026, 5:04pm UTC](https://community.ntppool.org/t/ntp-stratum1-server-ask-for-opinion-of-dashboard/4510 "2026-05-29T17:04:43Z")
Hello everyone, My friends and me are trying to make custom made gadgets, and one of those is a Stratum1 NTP Server. After almost 6 months of offline testing, we have joined the pool with this NTP server and so far it … --- ## [Problem between servers page and single server page](https://community.ntppool.org/t/problem-between-servers-page-and-single-server-page/4502)
**Author:** [@Bas](https://community.ntppool.org/u/Bas)\ **Replies:** 2\ **Last updated:** [May 21, 2026, 6:38pm UTC](https://community.ntppool.org/t/problem-between-servers-page-and-single-server-page/4502 "2026-05-21T18:38:11Z")
My overview shows me -41.2 score. But when clicking the server in question, it shows -44.4 I noticed this trying to resolve the problem with my server. It should not show a different value. Even on the single-serve… --- ## [No active monitors for new server?](https://community.ntppool.org/t/no-active-monitors-for-new-server/4480)
**Author:** [@Maurice](https://community.ntppool.org/u/Maurice)\ **Replies:** 4\ **Last updated:** [May 21, 2026, 6:55am UTC](https://community.ntppool.org/t/no-active-monitors-for-new-server/4480 "2026-05-21T06:55:58Z")
Hi, I added a new server to the pool 3 days ago. In the meantime the score has climbed slowly above 10, it is included in the pool and all seems fine, except that there are no active monitors on the status page. There is… --- ## [Blocking TopSpammers in pfSense end up blocking NTP servers](https://community.ntppool.org/t/blocking-topspammers-in-pfsense-end-up-blocking-ntp-servers/4405)
**Author:** [@santiago](https://community.ntppool.org/u/santiago)\ **Replies:** 5\ **Last updated:** [May 13, 2026, 12:41am UTC](https://community.ntppool.org/t/blocking-topspammers-in-pfsense-end-up-blocking-ntp-servers/4405 "2026-05-13T00:41:50Z")
Hi, i’m experiencing a lot of IA scrapers in my server that is affecting QoS and because of that, i enabled blocking TopSpammers in pfBlocker-NG which is the pf-firewall in pfSense. After i did that, NTP server monitors … --- ## [Aggressive client sending huge amount of requests](https://community.ntppool.org/t/aggressive-client-sending-huge-amount-of-requests/4413)
**Author:** [@meszaros.norbert](https://community.ntppool.org/u/meszaros.norbert)\ **Replies:** 4\ **Last updated:** [May 12, 2026, 8:36am UTC](https://community.ntppool.org/t/aggressive-client-sending-huge-amount-of-requests/4413 "2026-05-12T08:36:05Z")
Hi team, I am brand new. I have joined the pool with my stratum 1 server. I have a kind of aggressive client hammering me with requests, specifically 158.195.159.1 4.83 req/s Int=-2 measured for 60 secods. I have tri… --- ## [New Server Add issue](https://community.ntppool.org/t/new-server-add-issue/4380)
**Author:** [@mehedims](https://community.ntppool.org/u/mehedims)\ **Replies:** 11\ **Last updated:** [May 11, 2026, 1:35pm UTC](https://community.ntppool.org/t/new-server-add-issue/4380 "2026-05-11T13:35:39Z")
Hello, am trying to add new 2-server in the pool . but it showing only Could not check NTP status. My time server is work without issue, my location is Bangladesh. how i fix it? --- ## [Could not check NTP status. Verified open with w32tm but no hits in tcpdump from monitors](https://community.ntppool.org/t/could-not-check-ntp-status-verified-open-with-w32tm-but-no-hits-in-tcpdump-from-monitors/4409)
**Author:** [@nait85](https://community.ntppool.org/u/nait85)\ **Replies:** 3\ **Last updated:** [May 11, 2026, 8:53am UTC](https://community.ntppool.org/t/could-not-check-ntp-status-verified-open-with-w32tm-but-no-hits-in-tcpdump-from-monitors/4409 "2026-05-11T08:53:15Z")
I’m having a weird issue trying to add my new server (80.217.228.9) to the pool. I keep getting the “Could not check NTP status” error, even though I’ve confirmed it’s actually reachable from the outside. IP: 80.217.228… --- ## [Still issues, or...?](https://community.ntppool.org/t/still-issues-or/4355)
**Author:** [@marco.davids](https://community.ntppool.org/u/marco.davids)\ **Replies:** 13\ **Last updated:** [May 11, 2026, 7:03am UTC](https://community.ntppool.org/t/still-issues-or/4355 "2026-05-11T07:03:41Z")
I noticed this on https://status.ntppool.org/ - is that still an ongoing issue? I’m asking, because I have some issues with https://manage.beta.grundclock.com/ - I can’t add servers and the NTP Check doesn’t work eit… --- ## [Need suggestions on dealing with SNTP clients running on cron jobs](https://community.ntppool.org/t/need-suggestions-on-dealing-with-sntp-clients-running-on-cron-jobs/4406)
**Author:** [@imi415](https://community.ntppool.org/u/imi415)\ **Replies:** 1\ **Last updated:** [May 9, 2026, 5:24am UTC](https://community.ntppool.org/t/need-suggestions-on-dealing-with-sntp-clients-running-on-cron-jobs/4406 "2026-05-09T05:24:00Z")
I have an IPv4 NTP server running in the pool for several months now, and it has been quite a problem for me that it seems there are large amount of clients which run some sort of synchronization script on a fixed absolu… --- ## [Adding new server](https://community.ntppool.org/t/adding-new-server/4376)
**Author:** [@mclc](https://community.ntppool.org/u/mclc)\ **Replies:** 5\ **Last updated:** [April 29, 2026, 10:40am UTC](https://community.ntppool.org/t/adding-new-server/4376 "2026-04-29T10:40:16Z")
When I try to add a new server, I get this error: “Error 503 first byte timeout”. I also get an error when using the “NTP Check”. --- ## [Bad score (negative) from just one monitor](https://community.ntppool.org/t/bad-score-negative-from-just-one-monitor/4379)
**Author:** [@Wokkocher](https://community.ntppool.org/u/Wokkocher)\ **Replies:** 3\ **Last updated:** [April 27, 2026, 8:22pm UTC](https://community.ntppool.org/t/bad-score-negative-from-just-one-monitor/4379 "2026-04-27T20:22:48Z")
Hello everyone, I am running this server. It is a little router running openwrt and chrony on a regular customer at home connection with a static IPv6 adress. It is set to 6 mb/s, because my main router (provided by my … --- ## [Pool DNS zones stuck](https://community.ntppool.org/t/pool-dns-zones-stuck/4356)
**Author:** [@avij](https://community.ntppool.org/u/avij)\ **Replies:** 19\ **Last updated:** [April 23, 2026, 6:32pm UTC](https://community.ntppool.org/t/pool-dns-zones-stuck/4356 "2026-04-23T18:32:35Z")
I get the impression that the pool DNS zones are currently “stuck”. Servers with a score less than 10 may still be included in the pool DNS if their score has dropped only recently below 10, and I’d imagine the reverse i… --- ## [Ntp help. I just joined around 31st](https://community.ntppool.org/t/ntp-help-i-just-joined-around-31st/4317)
**Author:** [@StrawberryMew](https://community.ntppool.org/u/StrawberryMew)\ **Replies:** 20\ **Last updated:** [April 6, 2026, 11:46pm UTC](https://community.ntppool.org/t/ntp-help-i-just-joined-around-31st/4317 "2026-04-06T23:46:50Z")
I used to be a 19.9 and then February 2nd it’s dropped down a lot. I don’t know what this pink dot is. Can somebody help me figure out what’s wrong? --- ## [Hello, I am Orlinum. Nice to meet you ...](https://community.ntppool.org/t/hello-i-am-orlinum-nice-to-meet-you/4296)
**Author:** [@Orlinum](https://community.ntppool.org/u/Orlinum)\ **Replies:** 10\ **Last updated:** [March 29, 2026, 3:40pm UTC](https://community.ntppool.org/t/hello-i-am-orlinum-nice-to-meet-you/4296 "2026-03-29T15:40:55Z")
Hello, I am Orlinum. Nice to meet you ! I have been operating NTP servers for many years. Currently, I run a Stratum 1 node powered by a Raspberry Pi 5 with a GPS/PPS reference clock (u-blox NEO-M9N). Real-time operatio… --- ## [Twtpe3-2kg9ezv -100 for days on end](https://community.ntppool.org/t/twtpe3-2kg9ezv-100-for-days-on-end/4246)
**Author:** [@theking2](https://community.ntppool.org/u/theking2)\ **Replies:** 19\ **Last updated:** [March 23, 2026, 8:14am UTC](https://community.ntppool.org/t/twtpe3-2kg9ezv-100-for-days-on-end/4246 "2026-03-23T08:14:07Z")
twtpe3-2kg9ezv has been reporting -100 for almost a week now. Is this (time2.google.com) server no longer active? --- ## [404 error on retrieving metrics this morning](https://community.ntppool.org/t/404-error-on-retrieving-metrics-this-morning/4291)
**Author:** [@ronv42](https://community.ntppool.org/u/ronv42)\ **Replies:** 6\ **Last updated:** [March 19, 2026, 11:30am UTC](https://community.ntppool.org/t/404-error-on-retrieving-metrics-this-morning/4291 "2026-03-19T11:30:40Z")
Looks like the monitor is not functional this morning: --- ## [Some DNS servers unresponsive](https://community.ntppool.org/t/some-dns-servers-unresponsive/4284)
**Author:** [@lordgurke](https://community.ntppool.org/u/lordgurke)\ **Replies:** 2\ **Last updated:** [March 19, 2026, 5:42am UTC](https://community.ntppool.org/t/some-dns-servers-unresponsive/4284 "2026-03-19T05:42:13Z")
Hi, some of the authoritative DNS servers for pool.ntp.org are unresponsive at least since about two weeks, thus are slowing down name resolution. Currently (2026-03-12, 22:50Z) the following servers do not respond to … --- ## [NTP Stratum 1 statistics?](https://community.ntppool.org/t/ntp-stratum-1-statistics/4171)
**Author:** [@santiago](https://community.ntppool.org/u/santiago)\ **Replies:** 12\ **Last updated:** [March 12, 2026, 1:00pm UTC](https://community.ntppool.org/t/ntp-stratum-1-statistics/4171 "2026-03-12T13:00:44Z")
Hi, i’v been operating a small NTP server with a GPS receiver antenna. In my country there are a few (4 ipv4 and 2 ipv6) and mine is one of those ipv4. The per-myriad statistic shows some numbers, is there anyway to esti… [Previous page](https://community.ntppool.org/c/server-operators/6.md) [Next page](https://community.ntppool.org/c/server-operators/6.md?page=2)