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3x-ui: panel settings and hardening

A fresh 3x-ui faces the internet on bare HTTP — that's the first thing to close before scanners find the panel. Below — an operator's hardening checklist: TLS, secret path, port change, access only from your own IP, fail2ban, and Telegram login alerts. Enter your domain and IP in the builder above.

What's wrong with the default

After installation, 3x-ui is convenient in exactly the way it's dangerous: it's open right to the internet at http://SERVER_IP:PORT/path/. Three problems at once:

  • Traffic to the panel is unencrypted — login and password fly in the clear.
  • The port and path are random, but the panel still sticks out and scanners will find it.
  • The only out-of-the-box defense is fail2ban against brute-force, and that's not enough.

Let's go layer by layer, from mos…

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