In the developer documentation for Network extensions they describe how to enable them for Apps outside the App store: https://developer.apple.com/documentatio

In the developer documentation for Network extensions they describe how to enable them for Apps outside the App store: https://developer.apple.com/documentation/bundleresources/entitlements/com_apple_developer_networking_networkextension https://developer.apple.com/documentation/bundleresources/en... It's under "Discussion". Haven't tried out if it works though, but the link in [6] that the developer refers to is 3 years old, so maybe check again?