From: Miroslav Lichvar Date: Mon, 13 Mar 2023 15:03:11 +0000 (+0100) Subject: doc: mention NTP port number in FAQ X-Git-Tag: 4.4-pre1~23 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d80be9541c42935cde2ddad1288d939003ca12a;p=thirdparty%2Fchrony.git doc: mention NTP port number in FAQ --- diff --git a/doc/faq.adoc b/doc/faq.adoc index 1753ffa8..d6e06922 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