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How to self-host hardened Jitsi server

Requirements

Caveats

  • When copy/pasting commands that start with $, strip out $ as this character is not part of the command
  • When copy/pasting commands that start with cat << "EOF", select all lines at once (from cat << "EOF" to EOF inclusively) as they are part of the same (single) command

Setup guide

Step 1: create DNS record

Create “A” record (example: meet.sunknudsen.com) that points to IP of server.

Step 2: log in to server

Replace server-admin@185.193.126.203 with server SSH URL and ~/.ssh/server with path to associated private key.

ssh server-admin@185.193.126.203 -i ~/.ssh/server

Step 3: switch to root

When asked, enter root password.

su -

Step 4: set hostname environment variable

Replace meet.sunknudsen.com with hostname from step 1.

JITSI_HOSTNAME=meet.sunknudsen.com

Step 5: install dependencies

apt install -y apt-transport-https curl gnupg lsb-release nginx-full

Step 6: import Jitsi’s PGP public key

curl -fsSL https://download.jitsi.org/jitsi-key.gpg.key | gpg --dearmor > /usr/share/keyrings/jitsi.gpg

Step 7: enable Jitsi’s repository

echo -e "deb [signed-by=/usr/share/keyrings/jitsi.gpg] https://download.jitsi.org stable/" > /etc/apt/sources.list.d/jitsi.list
apt update

Step 8: install Jitsi

Heads-up: when asked to enter hostname, enter hostname from step 1.

Heads-up: when asked which SSL certificate to use, select “Generate a new self-signed certificate”.

apt install -y jitsi-meet

Step 9: configure firewall

iptables -A INPUT -p tcp --dport 80 --syn -m connlimit --connlimit-above 50 -j DROP
iptables -A INPUT -p tcp --dport 80 -m conntrack --ctstate NEW -m limit --limit 60/s --limit-burst 20 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 --syn -m connlimit --connlimit-above 50 -j DROP
iptables -A INPUT -p tcp --dport 443 -m conntrack --ctstate NEW -m limit --limit 60/s --limit-burst 20 -j ACCEPT
iptables -A INPUT -p udp --dport 10000 -m state --state NEW -j ACCEPT
iptables-save > /etc/iptables/rules.v4

If network is dual stack (IPv4 + IPv6) run:

ip6tables -A INPUT -p tcp --dport 80 --syn -m connlimit --connlimit-above 50 -j DROP
ip6tables -A INPUT -p tcp --dport 80 -m conntrack --ctstate NEW -m limit --limit 60/s --limit-burst 20 -j ACCEPT
ip6tables -A INPUT -p tcp --dport 443 --syn -m connlimit --connlimit-above 50 -j DROP
ip6tables -A INPUT -p tcp --dport 443 -m conntrack --ctstate NEW -m limit --limit 60/s --limit-burst 20 -j ACCEPT
ip6tables -A INPUT -p udp --dport 10000 -m state --state NEW -j ACCEPT
ip6tables-save > /etc/iptables/rules.v6

Step 10: generate Let’s Encrypt SSL certificate

/usr/share/jitsi-meet/scripts/install-letsencrypt-cert.sh

Congratulations!

👍

Step 11 (optional): enable host authentication

Configure Prosody

$ cp /etc/prosody/conf.avail/$JITSI_HOSTNAME.cfg.lua /etc/prosody/conf.avail/$JITSI_HOSTNAME.cfg.lua.backup

$ sed -i -E 's/authentication = "anonymous"/authentication = "internal_plain"/' /etc/prosody/conf.avail/$JITSI_HOSTNAME.cfg.lua

$ cat << EOF >> /etc/prosody/conf.avail/$JITSI_HOSTNAME.cfg.lua

VirtualHost "guest.$JITSI_HOSTNAME"
    authentication = "anonymous"
    c2s_require_encryption = false
EOF

Configure Jicofo

echo "org.jitsi.jicofo.auth.URL=XMPP:$JITSI_HOSTNAME" > /etc/jitsi/jicofo/sip-communicator.properties

Configure Jitsi

$ cp /etc/jitsi/meet/$JITSI_HOSTNAME-config.js /etc/jitsi/meet/$JITSI_HOSTNAME-config.js.backup

$ sed -i -E "s/\/\/ anonymousdomain: 'guest.example.com'/anonymousdomain: 'guest.$JITSI_HOSTNAME'/" /etc/jitsi/meet/$JITSI_HOSTNAME-config.js

Create host credentials

Replace sun with desired username.

prosodyctl register sun $JITSI_HOSTNAME

Restart Jitsi components

$ systemctl restart prosody

$ systemctl restart jicofo

$ systemctl restart jitsi-videobridge2

👍


Usage guide

Install Jitsi Meet Electron

Heads-up: although guests can join calls from browser (Chromium-based browser recommended), using Jitsi Meet Electron tends to be more reliable.

Download and install latest release of Jitsi Meet Electron.

👍

Configure Jitsi Meet Electron to use self-hosted server instead of meet.jit.si

Click gear icon, expand “Advanced Settings” and set “Server URL” to “https://” followed by hostname from step 1.

👍