BS"D

Hi,

Michael wrote the magic words:
> Most Napster clones (use Napster servers, not Napster client) allow the user
> to pick other servers not run by Napster.  There are directories of such
> servers online that are easily accessible.  File transfers do not happen
> between users and Napster's servers, but between users themselves so blocking
> Napster's C class does little in the long run.

absolutely right, I agree. The "normal way" is to query via port 8888 a napster-bot
cluster and you get the IP's of available napster servers; usually 16 servers each 
block.
For example, you get  this list of servers:
64.124.41.159:8888
64.124.41.160:8888
64.124.41.161:8888
64.124.41.162:8888
64.124.41.167:8888
64.124.41.168:8888
64.124.41.204:8888
64.124.41.239:8888
--- cut ---
208.184.216.15:8888
208.184.216.16:8888
208.184.216.18:8888
208.184.216.23:8888
208.184.216.24:8888
208.184.216.44:8888
208.184.216.47:8888
208.184.216.60:8888
208.184.216.61:8888
--- cut ---
These servers do not transfer the mp3-files they give you an IP of someone who has
the type of mp3 you've requested and a port the donator served for a contact in order 
to
transfer files. Your client then does contact the donators machine via its IP and the
port he saved for you. These ports are dynamic and not fixed so that there is no 
standard
port for all these transfers.
IMHO the best way to block napster is therefore to block the queries to the napster 
bot servers so that no "deal" between 2 clients could be established.

> "Ryan, Kennedy" wrote:
> 
> > We block their class c network address of 61.124.41.0 and effectively shut
> > down mp3 downloads from Napster..

Best,


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Daniel /  \___
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