With the release of macOS Sequoia, Apple extended its strict iOS privacy protections directly to desktop and laptop Macs. When you launch certain media players, web browsers, collaboration utilities, or connected smart home tools, a system prompt frequently appears asking: “[App Name] would like to find and connect to devices on your local network.” While legitimate apps—such as Sonos controllers, network printers, or Apple TV remote apps—require local network access to communicate with smart devices in your home, other apps scan your network purely to track user habits, detect smart appliances, and profile devices.
If you accidentally clicked “Allow” on a suspicious app or clicked “Don’t Allow” on a legitimate streaming utility that now refuses to discover your media server, you can review and modify these permissions at any time. In this guide, you will learn how local network permissions function in macOS, how to view which apps have access, and how to revoke permissions securely.
Why Local Network Permissions Matter for Privacy
Your local home or office Wi-Fi network contains dozens of connected hardware devices: smart TVs, NAS backup servers, security cameras, smart speakers, and other computers. When an application has unrestricted access to your local network:
- Device fingerprinting: Trackers can scan MAC addresses and device hostnames on your LAN to build a unique digital profile of your household.
- Unintended communication: Shady background processes can query internal IP subnets (such as
192.168.1.0/24) to discover insecure local services. - Granular control: Apple’s local network permission system isolates applications in a security sandbox, requiring explicit user authorization before Bonjour discovery, mDNS, or socket broadcasts can reach your private network.
How to Manage Local Network Permissions in macOS Settings
To audit and control which applications have access to your local network:
- Click the Apple menu () in the upper-left corner of your menu bar.
- Select System Settings… from the drop-down menu.
- In the left-hand sidebar, click on Privacy & Security.
- Scroll down the right pane until you find the Local Network category.
- Click on Local Network to view the list of installed applications that have requested network discovery access.
- Review the list:
- To revoke permission from an application, toggle its switch to the Off position (grey).
- To grant access to an app that was previously blocked, toggle its switch to the On position (blue).
If you toggle permissions while an application is actively running, macOS may prompt you to restart the application for network changes to take effect.
Which Apps Truly Need Local Network Access?
When auditing your list, use these general rules of thumb:
- Leave Enabled: AirPlay receivers, Google Cast tools, printer drivers, media streaming servers (Plex, VLC, Infuse), virtual machine hypervisors (UTM, Parallels), and remote desktop clients (VNC, Moonlight).
- Safely Disable: Single-player games, offline text editors, standalone image converters, and PDF readers that have no legitimate reason to discover other devices on your home router.