# Wi-Fi checks and Local Network

HARD scans your home network for open doors and checks your router against published flaws. How to allow the Local Network permission.

Source: https://hard.fyi/docs/mac/wifi/

**Wi-Fi devices** scans your home network from the Mac: it names each device (router, TV, printer, cameras, phones), looks for open doors such as Telnet, Remote Desktop or open camera streams, and checks the router’s model and firmware against published flaws. It looks again when you rejoin a network, and notices new devices.

![Wi-Fi devices: the router checked against published flaws, a camera to look at, and every device on the network](https://hard.fyi/images/docs/mac-wifi-devices-light.webp "Wi-Fi devices: your router, what to look at, and everything on the network")

## The Local Network permission

The first scan asks for the **Local Network** permission. Choose **Allow**. If you said no, names still work but open ports and the router check don’t:

1. Open **System Settings → Privacy & Security → Local Network**.
2. Turn on **HARD**.
3. In HARD, scan again.

To check the router, HARD sends its model name to the US government’s National Vulnerability Database (NVD). Nothing else about your network leaves the Mac.

## Questions

### The Wi-Fi scan only shows names, not open ports or the router check.

macOS is limiting what HARD can reach on your network. Turn on HARD in System Settings → Privacy & Security → Local Network , then scan again.