| 摘要 |
A system for Distibuted Network Address Translation ("DNAT"). DNAT is used with small office/home office ("SOHO") networks or other legacy local networks that have multiple network devices using a common external network address to communicate with an external network. The system includes a port allocation protocol to allocate globally unique ports to network devices on a local network. Individual network devices on a SOHO networks replace local source ports with the globally unique ports. The globally unique ports are used in a combination network address with a common external network address such as an Internet Protocol ("IP") address, to identify multiple network devices on a local network to an external network such as the Internet, an intranet, etc. DNAT helps overcome the large computation burdens encountered when network address translation is done by a router and helps extend the life of older versions IP using 32-bit addressing.
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