請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/27656
標題: | 適用於點對點隨按即說服務之網路位址轉換器穿越機制 NAT Traversal for Peer-to-Peer Push-to-Talk Service |
作者: | Jenn-Yeu Wang 汪振宇 |
指導教授: | 逄愛君(Ai-Chun Pang) |
關鍵字: | 網路位址轉換器,網路位址轉譯,隨按即說,點對點網路,連接埠號碼衝突, NAT Traversal,Port Overloading,Peer-to-Peer,Push-to-Talk,Walkie-Talkie, |
出版年 : | 2007 |
學位: | 碩士 |
摘要: | 近年來由於網路相關應用相當發達,因此使得IPv4位址不敷使用,所幸1994年5月,K. Egevang和P. Francis提出了NAT的技術,解決IP位址不足之問題,但相對的,也造成VoIP和P2P在NAT環境下會遭遇到需多問題。雖然已有許多NAT Traversal的方法被提出,但這些方法若在具有Port Overloading Behavior之NAT內仍然可能發生問題。因此本文主要將以Peer-to-Peer Push-to-Talk系統為例,提出兩種解決Port Overloading Behavior NAT所造成的問題之方法。
本文首先將於第一章簡介NAT之運作模式與部分NAT Behavior,並介紹Peer-to-Peer Push-to-Talk的系統架構。第二章則會分析這樣的Peer-to-Peer Push-to-Talk架構中,當節點位在NAT的環境下會遭遇到哪些問題與相關之解決方式。第三章將會針對危害最嚴重的Port Overloading Behavior NAT提出兩種解決方式並舉例說明之,同時將會分析兩種方法之優缺點。接著第四章會列出我們對於市面銷售的12台NAT裝置,部分NAT Behavior之測試結果。第五章則是會將兩種方法進行實驗,驗證其在各種情況下之優缺點。 Because of the Internet developed in recent year, the IPv4 address space was beginning to be used up. Fortunately, K. Egevang and P. Francis proposed NAT technology to solve the shortage of IPv4 address in May 1994. However, NAT also caused some problems of VoIP and P2P Service. Although there are many NAT traversal methods have been proposed, but these methods couldn’t avoid collision if two or more endpoints behind the same NAT with port overloading Behavior. We will propose two methods to solve the problem of port overloading NAT for peer-to-peer push-to-talk service. The contents of this paper are as follows. First, we will introduce the operation of NAT and some NAT behaviors, then explain the operation and architecture of peer-to-peer push-to-talk services. Second, we will analyze the problems and solutions of peer-to-peer push-to-talk services with NAT. Third, we will explain our two methods for solving port overloading behavior NAT problem. Forth, we will list some NAT behaviors test results of twelve NAT devices. Last but not least, we will propose the experimental results of our two methods. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/27656 |
全文授權: | 有償授權 |
顯示於系所單位: | 資訊工程學系 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-96-1.pdf 目前未授權公開取用 | 777.52 kB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。