| 一种SIP穿越NAT的解决方案 |
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| 引用本文： | 邓勇,屈玉贵,赵保华,刘桂英.一种SIP穿越NAT的解决方案[J].小型微型计算机系统,2007,28(5):769-773. |
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| 作者姓名： | 邓勇 屈玉贵 赵保华 刘桂英 |
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| 作者单位： | 中国科学技术大学,信息科学技术学院,安徽,合肥,230027 |
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| 基金项目： | 国家自然科学基金;国家自然科学基金;国家重点基础研究发展计划(973计划);中国科学院重点实验室基金 |
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| 摘 要： | NAT使得SIP端到端的应用变得非常困难,文章分析了几种SIP穿越NAT方法及其不足,提出了一种基于STUN和TURN方法的穿越方案.其基本思想是根据NAT的不同采用不同的方式实现SIP信令的穿越,而媒体流的穿越则通过对所有可用媒体地址进行连接检查来实现.方案不改动现有NAT,在应用层上实现了对所有NAT的有效穿越,避免单独使用其它方法带来的缺陷.
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| 关 键 词： | SIP NAT STUN TURN |
| 文章编号： | 1000-1220（2007）05-0769-05 |
| 修稿时间： | 2006-03-14 |
A Solution for NAT Traversal for SIP |
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| DENG Yong,QU Yu-gui,ZHAO Bao-hua,LIU Gui-ying.A Solution for NAT Traversal for SIP[J].Mini-micro Systems,2007,28(5):769-773. |
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| Authors: | DENG Yong QU Yu-gui ZHAO Bao-hua LIU Gui-ying |
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| Affiliation: | School of Information Science and Technology, University of Science and Technology of China, Hefei 230027, China |
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| Abstract: | The NATs caused the SIP end-to-end application to become extremely difficult. In this paper we analyzed several kinds of method of NAT traversal for SIP and their pitfalls, proposed a solution for NAT traversal based on STUN and TURN methods. Its basic idea is that for SIP signaling, it takes different methodology to traverse the NAT by the NAT type, and for the associated media it traverses the NAT by the connectivity checks to all the media addresses available. This solution can traverse all NATs in the application layer not changing the existing NAT, and avoids the pitfalls of using any of the other methods alone. |
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| Keywords: | SIP NAT STUN TURN |
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