Portainer on localhost with firewall vs 0.0.0.0 behind reverse proxy: trade‑off for accidental public access
Goal: Prevent Portainer from being unintentionally exposed to the public internet while still allowing administrators to manage the environment from remote locations. Constraint: Operators can either bind Portainer to 127.0.0.1 (or another private interface) and rely on host‑level firewall rules to block inbound traffic, or bind to 0.0.0.0 and place a revers