目 录
1、NAT 原理......................................................................................................................................4
1.1、概述....................................................................................................................................4
1.2、分类....................................................................................................................................4
1.2.1、传统 NAT................................................................................................................5
1.2.2、双向 NAT................................................................................................................5
1.2.3、两次 NAT................................................................................................................5
1.2.4、多宿主 NAT............................................................................................................6
1.3、工作机理............................................................................................................................6
1.3.1、Full Cone NAT........................................................................................................6
1.3.2、Restricted Cone NAT..............................................................................................7
1.3.3、Port Restricted Cone NAT......................................................................................7
1.3.4、Symmetric NAT......................................................................................................7
1.3.5、抽象原理.................................................................................................................8
1.4、应用....................................................................................................................................8
2、穿越 NAT 的障碍..........................................................................................................................9
3、现有穿越 NAT 的方法...............................................................................................................10
3.1、外网服务器法..................................................................................................................10
3.2、协议扩展法......................................................................................................................10
3.3、DNS-ALG........................................................................................................................11
3.4、隧道法..............................................................................................................................11
3.5、ALG..................................................................................................................................12
3.6、MIDCOM.........................................................................................................................13
3.7、STUN（Simple Traversal of UDP Through Network Address Translators）................13
3.8、TURN（Traversal Using Relay NAT）..........................................................................14
3.9、Full Proxy.........................................................................................................................14
3.10、UPnP...............................................................................................................................15
3.11、UDP 封装法...................................................................................................................15
3.12、穿越 NAT 的方法的比较..............................................................................................15
4、UPnP 原理...................................................................................................................................17
4.1、概述..................................................................................................................................17
4.2、UPnP 网络中的部件........................................................................................................17
4.3、UPnP 技术使用的协议....................................................................................................18
4.4、UPnP 网络工作步骤........................................................................................................19
4.4.0、寻址（Addressing）............................................................................................19
4.4.1、发现（Discovery）..............................................................................................19
4.4.2、描述（Description）............................................................................................19
4.4.3、控制（Control）..................................................................................................20
4.4.4、事件（Eventing）................................................................................................20
4.4.5、展示（Presentation）...........................................................................................20
5、基于 UPnP 穿越 NAT 的技术....................................................................................................20
5.1、概述..................................................................................................................................20
5.2、IGD 技术的特点..............................................................................................................20
5.3、基于 UPnP 穿越 NAT 的原理.........................................................................................21
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2013-05-08
18:04:56
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hik_zxw2017-01-02upnp应用的一个例子
jdyouh2015-05-09该方法很好，谢谢。。。。
