---
title: NEFilterFlow
framework: networkextension
role: symbol
role_heading: Class
path: networkextension/nefilterflow
---

# NEFilterFlow

The abstract base class for types that represent flows of network data.

## Declaration

```swift
class NEFilterFlow
```

## Topics

### Inspecting flow properties

- [url](networkextension/nefilterflow/url.md)
- [identifier](networkextension/nefilterflow/identifier.md)
- [direction](networkextension/nefilterflow/direction.md)
- [NETrafficDirection](networkextension/netrafficdirection.md)
- [NEFilterFlowBytesMax](networkextension/nefilterflowbytesmax.md)

### Source app identification

- [sourceAppUniqueIdentifier](networkextension/nefilterflow/sourceappuniqueidentifier.md)
- [sourceAppIdentifier](networkextension/nefilterflow/sourceappidentifier.md)
- [sourceAppVersion](networkextension/nefilterflow/sourceappversion.md)
- [sourceAppAuditToken](networkextension/nefilterflow/sourceappaudittoken.md)
- [sourceProcessAuditToken](networkextension/nefilterflow/sourceprocessaudittoken.md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Inherited By

- [NEFilterBrowserFlow](networkextension/nefilterbrowserflow.md)
- [NEFilterSocketFlow](networkextension/nefiltersocketflow.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCoding](foundation/nscoding.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [NSSecureCoding](foundation/nssecurecoding.md)

## See Also

### Flow handling

- [NEFilterBrowserFlow](networkextension/nefilterbrowserflow.md)
- [NEFilterSocketFlow](networkextension/nefiltersocketflow.md)
- [NEFilterNewFlowVerdict](networkextension/nefilternewflowverdict.md)
- [NEFilterDataVerdict](networkextension/nefilterdataverdict.md)
- [NEFilterControlVerdict](networkextension/nefiltercontrolverdict.md)
- [NEFilterRemediationVerdict](networkextension/nefilterremediationverdict.md)
- [NEFilterVerdict](networkextension/nefilterverdict.md)
- [NEFilterReport](networkextension/nefilterreport.md)