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# CNCopySupportedInterfaces

Returns the names of all network interfaces Captive Network Support is monitoring.

```
CFArrayRefCNCopySupportedInterfaces();
```

## Return Value

The network interface names, as an array of <doc://com.apple.documentation/documentation/CoreFoundation/CFString> objects. Ownership follows the [The Create Rule](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFMemoryMgmt/Concepts/Ownership.html#//apple_ref/doc/uid/20001148-103029).

## Discussion

---

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