NAT Traversal for Peer-to-Peer Push-to-Talk Service
Date Issued
2007
Date
2007
Author(s)
Wang, Jenn-Yeu
DOI
zh-TW
Abstract
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.
Subjects
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
Type
thesis
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