Method and device for efficiently using IPv4 public address

Abstract

The embodiment of the invention discloses a method and device for efficiently using an IPv4 public address, which are applied to a core translator deployed between an IPv4 internet and an IPv6 network. The method comprises the steps of: according to a transport layer protocol port range for an IPv6 server in the IPv6 network to use, mapping the IPv4 public address into a first-category IPv6 address with a first-category prefix, so that the IPv6 server uses the first-category IPv6 address to implement communication with a client in the IPv4 internet; and according to a transport layer protocolport range for a client in the IPv6 network to use, mapping the IPv4 public address into a second-category IPv6 address with a second-category prefix, so that the client in the IPv6 network uses the second-category IPv6 address to implement communication with an IPv4 server in the IPv4 internet. According to the embodiment of the invention, the IPv6 server and the client in the IPv6 network can use the same IPv4 public address to provide different services, so that a scarce IPv4 public address resource is used to the greatest extent.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of computer network communication, and in particular to a method and device for efficiently using IPv4 public addresses. Background technique [0002] Over the past 20 years, with the rapid development of the Internet, the IPv4 protocol has achieved great success. Currently, there are more than 3 billion IPv4 users in the world, accounting for more than 50% of the total population. However, the rapid growth of network scale also highlights a series of serious problems of IPv4, including insufficient address space, routing scalability problems, etc. The IPv6 protocol is the next-generation Internet protocol and is used to replace IPv4. IPv6 has a huge address space (2^128), hierarchical addressing and routing mechanisms, better end-to-end features, better security and mobility support and other features. [0003] However, IPv6 is not compatible with IPv4. In order to make the new IPv6...

AI Technical Summary

Problems solved by technology

For clients, assigning IPv4 private addresses and using transport layer ports to multiplex IPv4 public addresses is a mature technology, but for servers, this technology cannot be used because servers must use IPv4 public addresses and specify specific transport layer ports. Therefore, each IPv4 public address can only have a specific transport layer port (service port), and cannot be reused

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