[streaming] Re: SAP of VLC

[Marshall Eubanks]

If your firewall doesn't pass Class D multicast addresses, you surely  
will not get multicasts.

On Jan 22, 2006, at 5:45 PM, Matthew Geier wrote:

> Tran Minh Son wrote:
>> Dear Rémi Denis-Courmont,
>> Thank you for your answer.
>> But I didn,t catch your idea. First I don,t know how to catch the SAP
>> announcement with VLC. Second I run two instances of the vlc on  
>> the same
>> computer, one for streaming to localhost with SAP and the other for
>> capturing stream and SAP if possible. Therefore no firewall can just
>> absord the SAP announcement.However the SAP directory in the  
>> playlist is
>> still empty.
>
>   I still think it's the firewall - even on the same machine - at  
> least
> on Linux, multicasts appear to follow the normal routing rules, so the
> multicast transmissions will get injected into the default routes
> interface processing.
>   I don't know at which point the iptables filters kick in.
>
>   Id turn the firewall OFF and see what happens.
>
>   I often fireup VLC on my linux machine and wonder why I get no SAP
> messages. Then I realise I have the default iptables firewall  
> loaded. I
> really must put in an exception for group D addresses....
>



                                  Regards
                                  Marshall Eubanks

T.M. Eubanks
e-mail : tme at multicasttech.com
http://www.multicasttech.com

America Free TV Video Service
http://www.americafree.tv

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