Assuming the stream is in and named myStream (just an example), you can access that stream like this:
RTSP: rtsp://server_ip:5544/myStream
RTMP: rtmp://server_ip/live/myStream
For HTTP, there are 2 flavours: HDS (Adobe) and HLS (Apple). To serve the streams on this technology, you need to create the HLS/HDS outputs by either adjusting the configuration file (autoHLS and autoHDS nodes) or by dynamically create them (with cerateHLSStream and createHDSStream CLI commands)
After the HLS/HDS streams are being generated, you can access them by using any standard web server
Best regards,
Andrei