---
title: Relays
framework: Network Extension
role: collectionGroup
role_heading: API Collection
path: networkextension/relays
---

# Relays

Create and manage a system-wide network relay configuration that uses built-in proxying for TCP and UDP traffic over HTTP/3 and HTTP/2.

## Topics

### Essentials

- [Network Extensions Entitlement](bundleresources/entitlements/com.apple.developer.networking.networkextension.md)

### Relay configuration

- [NERelayManager](networkextension/nerelaymanager.md)
- [NERelay](networkextension/nerelay.md)