The Real Time Streaming Protocol (RTSP) is a real-time audio and video protocol used by several multimedia applications, such as RealPlayer, Cisco IP/TV, Quicktime 4, Netshow, and VDO live, to name a few. Similar to FTP, this protocol can operate in different modes depending on the application used. Each mode uses three different connections to function properly.
Real-Time Protocol (RTP) mode uses the following three connections:
RealNetworks' Real Data Transport (RDT) mode uses the following three connections:
By default, no fixup protocols are set for RTSP applications; they must be manually set if such applications are needed. The default port used by RTSP is port 554. The following command enables fixups for RTSP:
pixfirewall(config)# fixup protocol rtsp 554