[documentation/gcompris-teachers-handbook] /: add a note about firewalls

[Timothée Giet]

Git commit 026b084f76f9bff75d1253826ed0b0baa1bda530 by Timothée Giet.
Committed on 26/11/2025 at 16:47.
Pushed by timotheegiet into branch 'master'.

add a note about firewalls

M  +3    -0    index.docbook

https://invent.kde.org/documentation/gcompris-teachers-handbook/-/commit/026b084f76f9bff75d1253826ed0b0baa1bda530

diff --git a/index.docbook b/index.docbook
index b863ae3..2d803f6 100644
--- a/index.docbook
+++ b/index.docbook
@@ -329,6 +329,9 @@ GCompris is a multi-activity educational software. This documentation is for the
             <phrase>gcompris_teacher_settings</phrase>
           </textobject>
         </mediaobject>
+        Also, if the device running the server or the client has a firewall, make
+        sure to open the chosen port in the firewall configuration to let
+        the devices communicate.
       </para>
     </sect2>
     <sect2 id="daily-connection-workflow">