---
title: NEFilterManager.Grade.firewall
framework: networkextension
role: symbol
role_heading: Case
path: networkextension/nefiltermanager/grade-swift.enum/firewall
---

# NEFilterManager.Grade.firewall

A grade for filters that act as firewalls, blocking some network traffic.

## Declaration

```swift
case firewall
```

## Discussion

Discussion Firewall grade filters see network traffic before other filter grades.

## See Also

### Grades

- [NEFilterManager.Grade.inspector](networkextension/nefiltermanager/grade-swift.enum/inspector.md)