This blog post discusses SideStore, a tool for sideloading iOS applications, and its relationship with StosVPN, a proprietary VPN client designed for SideStore. It explains the processes involved in using these tools, including the limitations of existing solutions, particularly regarding Apple's restrictions on developer certificates. The author also provides a technical breakdown on how to emulate StosVPN's functionality within a home network using nftables and a custom tool, facilitating certificate refresh for sideloaded applications without needing constant VPN connections.