Using SideStore without StosVPN across your LAN

2026-05-01 update: Added Nftables rule that apply to the entire network, provided by @KusakabeShi . Foreword SideStore is a commonly used iOS app sideloading tool that allows you to install third-party apps bypassing the App Store. It works by using your Apple ID to obtain a free Apple developer certificate, which is then used to sign the app you want to install, allowing it to run normally on your iOS device. However, to maintain control over the iOS ecosystem, Apple prevents third-party app stores from us