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# filterConfiguration

An [`NEFilterProviderConfiguration`](/documentation/NetworkExtension/NEFilterProviderConfiguration) object containing the current filter configuration.

```
var filterConfiguration: NEFilterProviderConfiguration { get }
```

## Discussion

The Filter Provider can observe this property to be notified when the configuration changes, using KVO. See [Key-Value Observing Programming Guide](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/KeyValueObserving/KeyValueObserving.html#//apple_ref/doc/uid/10000177i).

---

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