Daryl Pawluk wrote:
>
> i don't really understand where the stream is going or coming from. my linksys
>router shows
> activity on all the ports active on the switch, but there is no activity on on the
>cable
> modem/wan port. so what exactly is going on and how would someone outside the
>router's
> firewall tune in? i've enabled forwarding on port 4420 to my computer in the router.
>is that
> required? what else can you tell me about outside access to the stream?
You need to read up on multicasting some. The TTL defines how "far" the
stream will be propogated. Multicasting is going to broadcast a single
stream to every port so there will be activity on all of them. When it
gets to the router, it will decrement the TTL and if it is >0, multicast
on the uplink - IF it is also a multicast router. Some (most?) routers
will just ignore the muticast stream and it will never get any further
than your network edge. Linux boxes will need the "MULTICAST_ROUTE"
(type) option, and hardware boxes like cisco, etc, will need to be
programmed to allow it (dunno for sure, but expect it to be disabled by
default).
Chris
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