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#1 2009-12-10 21:23:39

sDoky
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From: Brno, Czech Republic
Registered: 2008-09-24
Posts: 183

Multicast routing/forwarding

Hi, we have a multicast server for TV and streamed lectures. I would like to use this feature on my laptop behind an arch box. My friend was able to do so by checking multicast routing in his linksys router. Is there a way of doing this on my machine? I use shorewall as a routing daemon. Thanks

EDIT: This is the protocol we are currently using http://wiki.videolan.org/Multicast

Last edited by sDoky (2009-12-10 21:43:20)


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#2 2009-12-10 21:55:15

pyther
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Registered: 2008-01-21
Posts: 1,395
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Re: Multicast routing/forwarding

I never used shorewall and don't have a great deal of knoweldge on multicasting so hopefully someone can shed some light on the issue.

I believe, generally, incoming multicast traffic is blocked by default. Therefore, if this is indeed the case you will have to allow for multicast traffic in shorewall. How to do this, I do not know, but maybe it'll give you a hint?


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#3 2009-12-10 21:58:19

sDoky
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From: Brno, Czech Republic
Registered: 2008-09-24
Posts: 183

Re: Multicast routing/forwarding

There's a MULTICAST=[Yes|No] switch in the main config file, but it doesn't seem to do the trick I have tried enabling it in /etc/sysctl.conf and still nothing


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#4 2009-12-10 22:03:16

pyther
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Registered: 2008-01-21
Posts: 1,395
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Re: Multicast routing/forwarding

I would guess that whatever is in /etc/sysctl.conf would configure whether or not your system can send multicast packets. What you want to do is have shorewall allow multicast packets into your lan.


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#5 2009-12-10 22:39:45

sDoky
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From: Brno, Czech Republic
Registered: 2008-09-24
Posts: 183

Re: Multicast routing/forwarding

Yeah, that's exactly what I want


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#6 2009-12-10 23:35:12

sDoky
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From: Brno, Czech Republic
Registered: 2008-09-24
Posts: 183

Re: Multicast routing/forwarding

To be exact, the kernel says this:

error: permission denied on key 'net.ipv4.conf.all.mc_forwarding'

when I try to enable it


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