It is a great Open Source Tool for Videoconf in a Browser or via Smartphone App.

Although its written in Java, it's easy to setup in Debian Buster and it doesn't use soooo much Resources.

• https://www.scaleway.com/en/docs/setting-up-jitsi-meet-videoconferencing-on-debian-buster/

If you run a NAT'ED VS, you need to setup some additional Portforwardings and change some Settings in Jitsi Config:

mcedit /etc/jitsi/videobridge/sip-communicator.properties Add:

org.ice4j.ice.harvest.NAT_HARVESTER_LOCAL_ADDRESS=<Local.IP.Address>
org.ice4j.ice.harvest.NAT_HARVESTER_PUBLIC_ADDRESS=<Public.IP.Address>

Forward these Ports in your Firewall:

• TCP/80
• TCP/443
• or TCP/4443
• UDP/10000

• https://github.com/jitsi/jitsi-meet/blob/master/doc/quick-install.md#advanced-configuration

• https://www.kuketz-blog.de/jitsi-meet-vorlage-fuer-datenschutzerklaerung/

• https://github.com/jitsi/jicofo#secure-domain

wget https://raw.githubusercontent.com/jitsi/jitsi-meet/master/resources/install-letsencrypt-cert.sh
chmod +x install-letsencrypt-cert.sh
./install-letsencrypt-cert.sh
/ect/init.d/nginx/reload

Finished

mcedit /usr/share/jitsi-meet/css/all.css

.welcome .header .header-text-title{visibility: hidden;}                                                                                                                                  
.welcome .header .header-text-title::after{content: 'meet.fr33.info - Jitsi Meet Videochat';visibility: visible;display: block;color:#fff;}                                               
                                                                                                                                                                                        
.welcome .header .header-text-description{visibility: hidden;}                                                                                                                            
                                                                                                                                                                                        
.welcome .header .header-text-description::after{content: 'Dies ist ein freies Open Source Video Konferenz System. Es läuft  verschlüsselt auf unseren eigenen Servern ...Headset / Kopfhöre  um Feedbacks zu vermeiden.';visibility: visible;display: block; color:#fff;font-size:1rem;font-weight:400;line-height:24px;margin-bottom:20px;align-self:inherit}.