摘要： NAT穿越技术是基于分组的多媒体传输技术中一个重要的研究课题。STUN方案可以较好地解决大多数情况下的NAT穿越问题,但是无法实现对对称型NAT的穿越。在STUN的基础上,提出了一种基于预测的解决方案P-STUN,可以实现对对称型NAT的穿越。经过测试,P-STUN方案较好地达到了设计要求。

关键词: 网络地址转换, STUN, P-STUN, 命中率, 临界时间

Abstract: Network access translator (NAT) traversal solution is an important research project in packet-based transportation technology of multimedia. In most cases, STUN (simple traversal of UDP through network address translators) can afford successful solutions for NAT traversal. But in symmetric NAT case, STUN can not accomplish NAT traversal. A prediction-based method named P-STUN is put forward to resolve the problem. The experiment shows that P-STUN can work well for symmetric NAT traversal.

中图分类号: 

• TN919.8