L4 프로토콜 헤더 포맷
RDP Header format (rfc908) 0 0 0 1 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 +-+-+-+-+-+-+---+---------------+ |S|A|E|R|N| |Ver| Header | 0 |Y|C|A|S|U|0|No.| Length | |N|K|K|T|L| | | | +-+-+-+-+-+-+---+---------------+ 1 | Source Port | Dest. Port | +---------------+---------------+ 2 | Data Length | +---------------+---------------+ 3 | | +--- Sequence Number ---+ 4 | | +---------------+---------------..