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Skype Pros and Cons In peer-to-peer networking, a supernode works as one of that network's relayers and proxy servers, handling data flow and connections for other users. This usually requires a fairly fast Internet connection with a lot of bandwidth and a modest amount of CPU time, as a lot of data will invariably pass through the supernode and needs to be processed.peer-to-peerproxy serversInternetbandwidthCPU Some peer-to-peer designs allow for the user to choose whether they ever want to be treated as supernodes; others do not. Skype by default is configured as a supernode, an issue that has caused controversy.Skype http://en.wikipedia.org/wiki/
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Bandwidth and Proxy Server In computer networking and computer science, digital bandwidth or just bandwidth often refers to a data rate measured in bits/scomputer networkingcomputer sciencedata rate In computer networks, a proxy server is a server (a computer system or an application program) which services the requests of its clients by forwarding requests to other serverscomputer networksserverclients http://en.wikipedia.org/wiki/
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SKYPE’S CONS The protocols and security used by Skype are unknown and at best “guessed” by those who investigate the client’s software. Concerns: Target for hackers: Supposedly “totally secure” is like a “prize” for those interested in refuting this. Closed community: Skype does not use standard signalling protocols and it is incompatible with other software. Voice traffic: Is routed thorugh unknown machines on the internet (supernodes). At this point Skype’s encrytion is “unbreakable” but this might change in the future.
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SKYPE’S CONS No peer review: Other encryption schemes, such as AES, have been reviewed. Skype has not! Rapid spread of malicious files: Skype users can only talk to Skype users. Closed encryption and protocols may allow for the rapid spread of virus’ and other malicious content. Network security bypass: The ease with which Skype bypasses network security such as NAT and firewalls, is worrying to IT security experts [2]. Skype supernodes allow a new and different way into networks that hackers can take advantage of
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SKYPE’S CONS Inability to determine the atuthenticity of some article on Skype, whether they be for or against: Rumors that Skype had been reverse engineered worried users. Lack of end-to-end service quality: Skype as other services which traverse the internet can not guarante high service quality, much less when the service crosses continents. Skype is not free: Although fares are competitive, they could go up.
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SKYPE’S CONS Skype requires the internet to function: Other standards based software VoIP clients can communicate without access to the Internet, e.g. X-Lite.
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SKYPE’S PROS Easy to install and works without much configuration: Works great for relatives living abroad that are not technically literate. Works behind typical network security devices: e.g. firewalls, NAT. Users in coroporate network do not need IT staff to configure anyhting for Skype to work. Call quality is stated to be superior to other computer based VoIP software clients: An IEEE technical article states that Skype has no better call quality than MSN Messenger. Large community: Friends and family are propmot to join. Popularity: People know it works well! http://information.anu.edu.au/daisy/infoservices/945.html
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