Method for mapping dynamically inside and outside network of server based on DDNS and NAT

A dynamic mapping and server technology, applied in the direction of network connection, data exchange network, digital transmission system, etc., can solve problems such as technical incompetence, achieve the effect of facilitating communication, improving utilization rate, and increasing available resources

Inactive Publication Date: 2007-09-26
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent must first access other computers on the external network from the internal network, and if the actual application requires the external network to access the internal network server first, the technology of this patent will not be competent

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  • Method for mapping dynamically inside and outside network of server based on DDNS and NAT
  • Method for mapping dynamically inside and outside network of server based on DDNS and NAT

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Embodiment Construction

[0015] As shown in Figure 1, set up a gateway server or router that provides both DDNS and NAT services at the internal and external gateways. The DDNS service of this gateway server will be connected to the public network domain name service system to provide the domain name and IP address translation service of the server under the jurisdiction of the server to the public network, and the NAT service is used to provide public network and intranet IP address translation .

[0016] After the server in the intranet starts or changes its IP address, it will register with the DDNS service of the gateway server, so that the gateway server associates the domain name of the server with its intranet address.

[0017] When a computer on the external network needs to access a server in the internal network, it first performs domain name resolution through the public network DNS. This domain name resolution service will be forwarded to the DDNS service of the above-mentioned gateway se...

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Abstract

The dynamic mapping method for internal and external server networks based on DDNS and NAT comprises: setting a special-developed internal-external gateway server or router, storing DDNS service program and the correlated NAT conversion service program; registering internal server DN and IP address message on the gateway server by NNDS client; to the DNS request for internal network server, using the NAT program to automatic allocate a public IP address; starting the NAT conversion to return the public IP address to complete the dynamic mapping.

Description

technical field [0001] The invention belongs to computer network and communication application technology, in particular to a dynamic mapping method of internal and external network of a server based on dynamic domain name service (DDNS) and network address translation (NAT). Background technique [0002] The so-called domain name resolution is the mapping process from domain name to IP address, so that the IP address is replaced by several English letters and numbers that are easy to remember. Domain name resolution includes static domain name resolution (DNS, Domain Name System) and dynamic domain name resolution (DDNS, Dynamic Domain Name System). Static domain name resolution establishes the mapping relationship between domain name and fixed IP address, while dynamic domain name resolution establishes the mapping relationship between domain name and dynamic IP The difference between the two is that the correspondence between domain names and IPs in DNS resolution is gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/66H04L29/06H04L29/12
Inventor 鄢萍易润忠刘飞童亮王东强贺晓辉
Owner CHONGQING UNIV
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