[icecast] Firewall issue with Icecast

Michael Smith msmith at xiph.org
Sat Feb 15 00:09:36 UTC 2003

On Saturday 15 February 2003 06:12, Steve Meuse wrote:
> Greetings,
> I've recently setup Icecast2 and Ices2 from the sources in the CVS
> repository. Everything seems to be working fine with the exception of a
> firewall issue that I'm having.
> Icecast appears to use a TCP connection, for session setup, that is
> initiated by the client. Icecast then sources a TCP connection back to the
> client for the stream itself. This basically how non-passive-mode FTP
> works. This creates a serious problem for anyone using a stateful firewall
> that blocks incoming TCP SYN, like I am (not by my own choice).

icecast only produces outgoing connections to connect to servers it is 
relaying. Client connections will never have the behaviour you described.

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