How does DPI (Deep Packet Inspection) identify OpenVPN in the first place?So to answer that question we have to fully understand what takes place when your packets are scanned by DPI, and how OpenVPN itself is flagged. DPI, not to be confused with SPI (Stateful Packet Inspection), scans both header and the data of a packet. This allows for application data to be filtered or blocked by DPI which is notoriously used in countries like China, Egypt, and other censorship advocating nation states.H...