Re: [p2prg] (no subject)

[Pedro Martínez Juliá <[e-mail]>]

15/07/12 16:07, b7uR:
> Disadvantages of a peer to peer network:
> 	* the system is not centralised, making administration difficult
> 	* lack of security
> 	* no computer in the network is reliable
> Therefore, peer-to-peer networks are only useful for a small number of
> computers (generally about 10), and only suitable for applications that
> do not require a high level of security (it is not advisable in a
> business network containing sensitive data).
>
> how to overcome this disadvantage and how about the security?because when
> the user using p2p network, the security level is very low compare to
> ethernet network. During the file is transferring (p2p network), any
> hackers can hack the user and crash or do something wrong to the file and
> especially virus. Can this problem be solve? Thank you.
>

You are only true in the complexity of administration. P2P networks are not 
managed/administered in a classical way. They use to be autonomic. Therefore, 
the P2P networks keep their working state and achieve their objective without 
human intervention.

About security, reliability, and trust, your claims are totally wrong. You can 
build a security scheme for P2P networks and also a reliable network by 
carefully selecting the nodes you use to build the overlay network from the 
available nodes in the P2P network.

That said, you can control which nodes form part of the overlay network, so 
they will not destroy your communication (see Kademlia). Also, you can use any 
hashing and signing mechanism to ensure that the information you receive is 
not modified on its way, the same as the underlying networks.

Finally, I re commend you to show evidences or reference to a high reputation 
source (paper) when you affirm something so strong.

Regards,
Pedro

-- 
Pedro Martinez-Julia
Department of Communication and Information Engineering
Faculty of Computer Science
University of Murcia
Email: [e-mail]
---------------------------------------------------------
*** Entia non sunt multiplicanda praeter necessitatem ***