扶墙Cloud is a simple 扶墙 over UDP. It creates a virtual network interface on the host and forwards all received data via UDP to the destination. 扶墙Cloud establishes a fully-meshed 扶墙 network in a peer-to-peer manner. It can work on TUN devices (IP based) and TAP devices (Ethernet based). Tunneling traffic between two nodes can be as easy as: