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# NETunnelProviderProtocol

Configuration parameters for a VPN tunnel.

```
class NETunnelProviderProtocol
```

## Overview

`NETunnelProviderProtocol` objects are used to specify configuration parameters for Tunnel Provider extensions.

## Topics

### Accessing the tunnel configuration

[`providerConfiguration`](/documentation/NetworkExtension/NETunnelProviderProtocol/providerConfiguration)

A dictionary containing keys and values defined by the Tunnel Provider developer.

[`providerBundleIdentifier`](/documentation/NetworkExtension/NETunnelProviderProtocol/providerBundleIdentifier)

A string identifying the specific Tunnel Provider extension that should be used with this configuration.


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