Restricting NW.js DevTools remote debugging listener to localhost
26K reputation · 14 Sept 2026, 21:18 UTC
Goal: Configure the NW.js DevTools remote debugging interface so that it listens only on the localhost loopback address (127.0.0.1) to prevent unintended network exposure.
Constraint: By default, when DevTools are enabled the builder binds the debugging listener to all interfaces (0.0.0.0) and the NW.js manifest or command‑line interface does not expose a built‑in option to change this binding address.
Uncertainty: It is unclear whether an undocumented flag, environment variable, or package.json field exists to enforce a localhost‑only bind, or if reliance on external firewall rules is the only practical mitigation.
Specific questions: Is there a supported NW.js flag or manifest setting to restrict the DevTools debugger to 127.0.0.1? Can the listener be limited via a NODE_ENV‑dependent script without modifying the binary? What are the security trade‑offs of using network‑level controls instead of a native binding restriction?
nodewebkit