It is TCP based protocol developed by Adobe System for streaming Audio/Video between Flash Player and Media server.
RTMPT: Real Time Messaging Protocol with Tunnel
It is a variation of RTMP which works behind the firewalls.
RTMPE: Real Time Messaging Protocol with Encryption
It is a new encrypted protocol developed by Adobe systems for securing (lightweight than SSL) the streams between flash client and Media server. It provide DRM solution from Adobe for flash.
RTMPS: Real Time Messaging Protocol Secure
It is a variation of RTMP which works over secure HTTPS connection.
RTMPTE: Real Time Messaging Protocol with Encryption and Tunnel
It is a RTMPE tunneling over HTTP.
How to enable rtmpt on Red5 Server?
/usr/local/red5/conf/jee-container.xml uncomment full section
<!– RTMPT (dedicated server) –>
<bean id=”rtmpt.server” class=”org.red5.server.tomcat.rtmpt.RTMPTLoader” init-method=”init” lazy-init=”true”>