Fernando Ariel Gont wrote in a message to All:
 FAG> Well, I need to get information about communications'
 FAG> protocols, about networks' configurations (token ring, star
 FAG> (?), and so on...) and about how are they implemented....
 FAG> All sources are welcome (FTPs' and WEB pages' addresses,
 FAG> books, electronic  magazines, and so on...)....
If you want everything in one book, start with the "LAN Times Encyclopedia of 
Networking," edited by Sheldon, ISBN 0-078-81965-2.  There is a new edition 
scheduled to be released imminently (ISBN 0-078-82333-1); it should be 
available December 1, and bookstores will accept orders for it now.
The definitive standard textbook on the subject, although it is hard reading 
and heavy on mathematics, is "Computer Networks, 3rd ed." by Tanenbaum, ISBN 
0-133-49945-6.  You should consider it if you are pursuing this 
professionally.
If you are looking for extremely low-level technical information, you should 
consider using the Linux source code as a tutorial reference.  Since all of 
these protocols are actually implemented with full publicly available source 
code, there is almost nothing you cannot find out.  However, this sort of 
thing is not easy to do, and it can be very time consuming.  Start with the 
Linux Journal home page, "http://www.ssc.com/linux/".
 
-- Mike
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