A Brief Note On Peer And Peer ( P2p ) Network

In this modern day and age of computing, networks are a huge part of IT. It is important now more than ever that data sent over any network, whether it be a LAN (Local Area Network) or WAN (Wide Area Network; The Internet) is kept safe, private (when required) and uninterrupted in

sharing workload in KaZaA [8] and [18], to our knowledge we are the ¯rst to undertake

Individual users play an important role in any form of institution or organization but concerns are raised about the security. The network administrators clearly lay down a set of rules, regulations and protocols that an individual user has to agree accordingly upon which part of the resources and what class of service that the user can obtain.

every other node that receives them from the neighbors of S, until they arrive at the destination. When reactive routing protocols such as DSR or

keep track of its state.If the first node fails, the second node takes up the operations from where the

These neighborsmay themselves be exhausted prematurely, causing a hole or partition in the network. 3.3. Hello Flood Attack. Many routing protocols use “Hello” broadcastmessages to announce themselves to their neighbor nodes. The nodes that receive this message assume that source nodes are within range and add source nodes to their

When businesses provide computers for public use, several challenges are presented. In addition to allowing the general public this service, and ultimately growing their market share, a business must define the line between appropriate use and securing the network.

In this example, here node A wants to send data packets to node D and starts to find the shortest path for its destination, so if node D is a malicious node then it will show that it has active route to the specified destination. It will then send the response In the example, data packets transfer in a hierarchic data center network. The link capacity is 1000 kb/s. The number on each is the traffic load. The distribution of traffic is based on equal cost multi-path (ECMP). In figure 8, we can see that the 3). Congestions

A malicious node can impersonate or spoof the address of another node in order to alter the vision of the network topology as perceived by another node. Such attacks can result in the formation of loops as described below [18]

Security is almost certainly the most difficult aspect of a network to perfect. It is important to have the correct procedures and components in place to make certain network security is being accounted for and addressed on any given network. The journal, “Future Generation Computer Systems” elaborates on this necessity for an information system. “Future Generation Computer Systems”, this component of a network is discussed thoroughly. “Essentially securing an Information System (IS), involves identifying unique threats and challenges which need to be addressed by implementing the appropriate countermeasures” (Dimitrios Zissis, Dimitrios Lekkas, 2012). This was achieved through configuring access lists as well as CHAP configuration on the routers connecting to the edge

Being proactive, AODV doesn’t need all its nodes in a network to maintain the routes to destinations rather request a route only when needed i.e., only the nodes which are communicating would require to maintain the route. Also AODV uses sequence numbers to avoid routing loops like in DSDV. Whenever a node needs to communicate with another node, a route has to be found and for that purpose Route Request (RREQ) message is broadcasted to all its neighbors till it reaches the destination node or route to destination. A temporary route table entry in initiated by the RREQ messages throughout the network. Once the destination or a route is found, Route Reply (RREP) message is sent back to source by unicasting along the temporary reverse path of the received RREQ message. RREP message initiates in creating a routing table entries for the destination in intermediate nodes on its way back to source. After certain amount of time these routing table entries expire. Neighbors are detected by periodic HELLO messages (a special RREP message). If a node A does not receive HELLO messages from a neighbor B through which it sends traffic, it assumes that a link is broken and the failure indication is forwarded to its active neighbors. When this message reaches the sources, then either they request a new route by sending new RREQ messages or stop sending data. HELLO messages and the

Not everyone thought this was such a great idea, however. Some objections cite legal or moral concerns. Other problems were technical. Many network providers, having set up their systems with the idea that users would spend most of their time downloading data from central servers, have economic objections to peer-to-peer models. A long-established fixture of computer networking that includes important peer-to-peer components is Usenet, which has been around since 1979. Usenet news implements a decentralized model of control that in some ways is the grandfather of today’s new peer-to-peer applications such as Gnutella* and Freenet*. Fundamentally, Usenet is a system that, using no central control, copies files between computers. So the bottom-line is that file-sharing has been around for a long time now and that its decentralized nature makes is hard to control besides holding each individual sharing files accountable. Peer-to-peer systems go hand-in-hand with decentralized systems. In a fully decentralized system, not only is every host an equal participant, but there are no hosts with special facilitating or administrative roles. In practice, building fully decentralized systems can be difficult, and many peer-to-peer applications take hybrid approaches to solving problems. [1]

No one can deny that technology is actively changing the music industry. Production, distribution and sales of music have been affected dramatically within the last 10 years along with artists, composers, and technicians. Most of the changes have been great for consumers, but vastly negative for professionals in the music industry, however a few artists have found ways to adapt to the changing atmosphere of digitally downloaded music and use it to their advantage. We’ve seen music change form from physical, tangible products like records and CD’s to electronic single tracks stored in an invisible cloud. Two major factors in this sudden revolution are online music stores (specifically iTunes) and file sharing websites that allow music to be downloaded illegally.

Network security has changed significantly over the past years. There is more and more data to monitor and analyze in order to detect the activity of your data and systems. Securing a network has many variables. Password authentication, network access, patches, anti-virus protection, intrusion detection, firewall and network monitoring tools are just a few of the things you can do to protect yourself.

Companies like Apple, have decided that it is best to get in with the downloading business. However, an end to the illegal downloading conflict remains to be realized. The RIAA and associated artists continue to wage war against illegal downloaders while computer savvy audiences persist in sharing music files online every day. While it is undoubtedly true that downloading music is a crime, it remains to be proven that it is wrong. Without establishing this principle, most downloader's are likely to continue the activity. Even with new, inexpensive and available means of downloading files, they can still be shared for free online. The rift must be repaired between music lovers who feel that they have been taken advantage of in the past and recording companies and artists who worry about their future livelihood.