BizGaze_Remote/deploy/coturn/turnserver.conf

# coturn config for BizGaze Connect self-hosted TURN.
# Put this on your VM (public IP) and run via Docker (see docker-compose.yml) or
# native coturn (apt install coturn). Replace every CHANGE_ME / placeholder.

# --- listening ---
listening-port=3478
tls-listening-port=5349
# If this VM has a spare 443, also exposing TURNS on 443 gives the best traversal
# through strict corporate firewalls (uncomment + ensure nothing else uses 443):
# alt-tls-listening-port=443

# Public address clients reach. If the VM has a 1:1 NAT, use external-ip=PUBLIC/PRIVATE.
external-ip=CHANGE_ME_PUBLIC_IP

# Relay port range (open these UDP ports in the firewall too).
min-port=49152
max-port=65535

# --- auth: time-limited shared-secret credentials (matches the app's TURN_SECRET) ---
use-auth-secret
static-auth-secret=CHANGE_ME_LONG_RANDOM_SECRET
realm=connect.yourdomain.com

# --- TLS (needed for turns: on 5349/443). Use a real cert for turn.yourdomain.com ---
cert=/etc/letsencrypt/live/turn.yourdomain.com/fullchain.pem
pkey=/etc/letsencrypt/live/turn.yourdomain.com/privkey.pem

# --- hardening ---
fingerprint
no-cli
no-multicast-peers
no-tcp-relay
# Block relaying to private/internal ranges (prevents your relay being used to reach
# your own LAN / cloud metadata — important SSRF protection):
denied-peer-ip=0.0.0.0-0.255.255.255
denied-peer-ip=10.0.0.0-10.255.255.255
denied-peer-ip=100.64.0.0-100.127.255.255
denied-peer-ip=169.254.0.0-169.254.255.255
denied-peer-ip=172.16.0.0-172.31.255.255
denied-peer-ip=192.168.0.0-192.168.255.255
denied-peer-ip=::1
denied-peer-ip=fc00::-fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
# Optional: cap per-session bandwidth (bytes/sec) to protect the VM, e.g. 700000 = ~5.6 Mbps
# bps-capacity=0
# total-quota=100