Matthew Kaufman introduced RTMFP, a new protocol developed by Adobe that allows for direct peer-to-peer communication between Flash Players. RTMFP uses UDP instead of TCP to avoid limitations of client-server communication over TCP. It includes security features like encryption and authentication. RTMFP can be used with Flash Media Server for one-to-many streaming, or directly between Flash Players without a server for lower latency one-to-one communication by traversing firewalls and NAT.