A Distributed Network Address Translation System

A distributed network and address translation technology, applied in the field of distributed network address translation NAT systems, can solve problems such as wasted network bandwidth, insufficient network bandwidth, and low load on NAT devices.
CN104601738BInactive Publication Date: 2018-04-10NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT
Publication Date
2018-04-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a distributed network address translation system. The distributed network address translation system comprises an access layer, a multiplex layer and a control layer; middle nodes of the access layer are APs (Access Point); middle nodes of the multiplex layer are MPs (Multiplex Point); middle nodes of the control layer are CPs (Control Point); every AP is an access server; the functions of every AP comprise communicating with an internal network host, selecting public IP (Internet Protocol) resources for the internal network host, communicating with the MP owning the selected public IP resources and performing address translation; every MP is a multiplex server; the respectively owned public IP resources are maintained through every MP and meanwhile every MP is communicated with an external network through the respectively owned public IP resources; every CP comprises an IPS (IP Selector) and a CC (Control Center); every IPS is used for maintaining the public IP address resources of the MPs in the system; every CC is used for performing configuration on every layer of nodes; the APs, the MPs and the CPs are connected with each other through a tunnel which is a transmission layer connecting tunnel. The distributed network address translation system is used for performing the distributed network address translation and accordingly the utilization rate of the IP resources in the NAT (Network Address Translation) system can be improved.
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Description

technical field

[0001] The invention relates to the technical field of network communication, in particular to a distributed network address translation NAT (Network Address Translation) system. Background technique

[0002] The Internet Assigned Numbers Authority (IANA) specifies three types of private IP address space: 10.0.0.0-10.255.255.255, 172.16.0.0-172.31.255.255 and 192.168.0.0-192.168.255.255. These three types of IP addresses can only be used on the internal network and are not allowed to be used on the Internet. The network using private IP addresses is called an internal network, referred to as "intranet"; the network using public IP addresses is called an external network, referred to as "external network" or "Internet".

[0003] NAT technology is a technology that appears when IPv4 addresses are increasingly exhausted. It is mainly used to realize the function of internal network accessing external network, and was released as an RFC document in 1994. NAT pr...

Claims

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