From 2d80be9541c42935cde2ddad1288d939003ca12a Mon Sep 17 00:00:00 2001 From: Miroslav Lichvar Date: Mon, 13 Mar 2023 16:03:11 +0100 Subject: [PATCH] doc: mention NTP port number in FAQ --- doc/faq.adoc | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/doc/faq.adoc b/doc/faq.adoc index 1753ffa..d6e0692 100644 --- a/doc/faq.adoc +++ b/doc/faq.adoc @@ -613,8 +613,9 @@ following questions. Check the `Reach` value printed by the ``chronyc``'s `sources` command. If it is zero, it means `chronyd` did not get any valid responses from the NTP server you are trying to use. If there is a firewall between you and the server, the -packets might be blocked. Try using a tool like `wireshark` or `tcpdump` to see -if you are getting any responses from the server. +requests sent to the UDP port 123 of the server or responses sent back from +the port might be blocked. Try using a tool like `wireshark` or `tcpdump` to +see if you are getting any responses from the server. When `chronyd` is receiving responses from the servers, the output of the `sources` command issued few minutes after `chronyd` start might look like