multiple streaming servers in a cloud

[Tapas Mishra <mightydreams@xxxxxxxxx>]

Hi,
 I am not sure if this is the right place to ask this
 question.
Please go through the question if you have any
suggestion let me know .



I have multiple streaming servers(Red5)
 running on some machines internally on LAN.
For different subdomains.
Server is Ubuntu 10.04

The front end to the world is apache2 on a Bastion Host.

To be able to reach the streaming server I
embed a _javascript_ in HTML pages
as follows

Code:

<embed .....
var="rtmp://site1.my_domain.com"


>

the problem is the website are many

site1.mydomain.com
site2.mydomain.com
site3.mydomain.com
site4.mydomain.com

each on a separate physical server.
Each of these four have their own Red5 installations the front end to each of these four is a common Bastion Host.

If I run rtmp on each of the subdomains at a different port

how will I make sure
a request such as
rtmp://site1.mydomain.com
rtmp://site2.mydomain.com

goes to their respective servers.
from the front end server.
What do I need to handle in this case ?

IPTABLES came to mind instantly but from the client browser on internet when some one requests
rtmp://site1.mydomain.com

how will I make sure this rtmp request is mapped to a port different than 1935 as there are three other streaming servers which are also to respond to their respective requests
?