blocking streaming audio with IOS firewall

[tato386]

Is this possible? We are running 12.4.8 Adv IP services on an 1841.

Thanks,

Diego

[JORGE RODRIGUEZ]

Sure it is possible, you need to get the stream audio tcp port number and build access list to block it .

refere to this link for varios tcp/udp ports used for streaning audio and/or realtime video for reference, tcp port 18888 is used for stream audio..

http://www.chebucto.ns.ca/~rakerman/port-table.html

HTH

Jorge

[tato386]

That is a very good reference URL. In your opinion, is 18888 the most common port used by all the various internet radio stations? I am hoping that it is rather than have all of them use different dynamic ports.

Thanks,

Diego