Feature Request: Temporary Block for Repeated Connections / Wrong Passwords

[Mocca-K]

Please add basic abuse protection for RustDesk Server/WebSocket (21118).

Requested behavior:

Detect repeated connection/retry attempts from the same IP.
Detect repeated wrong password attempts.
Temporarily block the source IP for a configurable time, e.g. 1–5 minutes.
Drop WebSocket connections that connect but do not send a valid RustDesk protocol message within a few seconds.
Add configurable thresholds, timeout, and allowlist.
Log the reason when an IP is temporarily blocked.

This would help prevent port-checking tools, connection floods, and password brute-force attempts from creating many or long-lived sessions.