---
title: sflt_handle
framework: Kernel
role: symbol
role_heading: Type Alias
platforms: [macOS 10.4+]
path: kernel/sflt_handle
---

# sflt_handle

A 4 byte identifier used with the SO_NKE socket option to identify the socket filter to be attached.

## Declaration

```occ
typedef u_int32_t sflt_handle;
```