velt-proxy-server-best-practices

The code is a legitimate-looking nginx reverse-proxy configuration for Firebase RTDB and contains no evident malware. The dynamic ns variant has a meaningful security risk because regex validation alone does not restrict access to approved Firebase projects; it permits proxying to any namespace under firebaseio.com and may enable unauthorized relay use or resource consumption. Add authentication, an explicit namespace allowlist, and appropriate rate and connection limits before exposing it publicly.