2.**Jitsi** requires the ports TCP/4443 and UDP/10000 to be forwarded to your YunoHost (The same way you forwarded 80 (HTTP), 443 (HTTPS), etc... https://yunohost.org/#/isp_box_config)
4. LDAP authentication is activated, only authenticated users to create new conference rooms. Whenever a new room is about to be created, Jitsi Meet will prompt for a user name and password. After the room is created, others will be able to join from anonymous domain.