- 學位論文
P2P架構網路管理策略分析
Analysis of Management Policy for P2P Network Architecture
摘要
近幾年隨著資訊科技的進步，帶動資訊網路使用的普遍化，在Internet上逐漸發展出共享下載、即時通訊、線上對談與遠端語音視訊通訊的P2P服務軟體。這些P2P使用行為(如P2P下載、Skype與IM軟體)不止在家中使用，使用P2P軟體的習慣也被帶進了日常工作的企業網路中，間接的造成Internet與企業網路雍塞。對ISP公司來說，若是採取禁用或限制方式來管理P2P流量，有違反網路自由問題，就企業網管人員來說，如果花費大筆費用採購市面上Gateway型產品導入企業網路中，以P2P下載與Skype特性，通常還是無法達到部份開放與部份禁用的目標。倘若採取全面禁用方式，則容易遭到公司使用者不小反彈，例如Skype或IM軟體就有利於業務與客戶溝通使用，上述種種問題，著實讓ISP公司與企業的網管人員對P2P問題處理非常棘手。 本研究主要是探討企業可用何種管理方式來解決P2P流量的問題，以企業網路環境做P2P相關比較分析與實驗，藉由企業網路現有設備與資源，在花費最小成本原則之下，達到企業網路管理P2P的目的，不再是一昧的阻擋與禁用P2P，在開放與有效管理P2P間取得平衡。我們也將探討ISP公司對於P2P流量的管理策略，希望能有效解決P2P流量造成之問題。
並列摘要
In recent years, network usage is getting more and more popular due to the advancement of the information technology. The P2P applications providing shared download, instant messenger, on-line chat, and audio/video communication are developed as a free service in the Internet. The uses of P2P applications, such as P2P file sharing, skype and IM, in not only being used at home but also in the enterprise. They will cause traffic problem to the Internet and the enterprise network. If the ISP company tries to block or limit the P2P traffic, it is a violation of network freedom. On the other hand, if the network administrator of the enterprise spends a lot of budget to purchase gateway products, it is still not able to allow selected users to have the right to use the P2P and block others, owing to the behavior of skype and P2P download. Totally block is not a good choice since P2P applications such as skype or IM could be used to make contact with customer and save the communication cost for the enterprise. It is hard for the network manager to deal with this kind of problems. This research is to investigate how an enterprise can manage its network to solve the P2P traffic problem. We will use an enterprise network environment as the platform to do experiments and analysis of the traffic control mechanism of P2P applications. The proposed methods try to use existing equipments and resources in the enterprise with minimum additional cost to manage the P2P traffic. Our goal is to achieve the balance between open the P2P applications to selected users and effective network management. We will also address the issues of P2P traffic management policy of an ISP that can solve the problems caused by the P2P traffic more effectively.