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发表于 2010-4-11 02:58 · 上海
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NAT
When multiple devices share a single Internet connection (a PC and an Xbox 360 console, for instance), the networked devices typically rely on Network Address Translation (NAT) to prevent information traffic jams.
NAT types
Xbox LIVE defines three categories of NAT: open, moderate, and strict. Devices that perform strict or moderate NAT can limit the ability of gamers to find each other, participate in multiplayer sessions, or hear each other on Xbox LIVE. The classification system boils down to something called a port-assignment policy:
* Open NAT means that either the port-assignment policy is minimal or the device has a fully compliant version of UPnP (Universal Plug and Play) enabled by default.
* Moderate NAT means that the port-assignment policy is minimal, but the device is filtering addresses or ports.
* Strict NAT means that the port-assignment policy is aggressive. |
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