newbie: rtmp support

[neuronetv]

hi I'm trying ums for the very first time on a centos 6 server and I have some questions before I dive in too deep:
1) does ums support rtmp? I'm using ffmpeg to send a video stream to a test machine running ums-5.1.3 with this command:

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ffmpeg -i <input> <blah-de-blah> rtmp://<ums-server-ip>:5001

but it ffmpeg is giving this error:

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[rtmp @ 0x3993080] Cannot read RTMP handshake response
rtmp://<ums-server-ip>:5001/: Connection reset by peer

I've turned the firewall off for this testing to make sure that isn't the problem.
when I started ums it showed this in the console:

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[main] Created socket: /<ums-svr-ip>:5001

so that's why I'm using port 5001. sorry to be such a noob on this but I can't find any info on how you connect ffmpeg to ums.

2) can ums be secured against unauthorised streaming? I want to stream live video on the internet and use ums to broadcast it but I don't want any tom dick or harry able to connect to (my) ums and stream their own content.

thanks for any advice.