Firewall

Only let in the connections we need.

Required Ports

ufw allow OpenSSH && ufw allow 80/tcp && ufw allow 443/tcp && ufw enable

Type y when asked.

Done.

Optional: Voice & Video

If you want voice/video calls, also run:

ufw allow 3478/udp && ufw allow 3478/tcp && ufw allow 49152:49200/udp

Note: Voice/video requires open ports - won’t work through Cloudflare Tunnel.

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What’s open now?

• SSH (so you can connect)
• HTTP/HTTPS (so chat works)
• TURN ports (if you added them - for voice/video)