Method, system and apparatus for realizing communication between nodes

Abstract

The invention discloses a method, system and apparatus for realizing communication between nodes and belongs to the computer technical field. The method is applied to a system providing Internet services. The methods includes the following steps that: an inner network node transmits a connection establishment request to a proxy node through an NAT gateway; the proxy node establishes a first communication connection with the inner network node according to the connection establishment request; a public network node transmits a first information message to the proxy node through a second communication connection established between the public network node and the proxy node; and when a first target node corresponding to the first information message belongs to the inner network node, the proxy node forwards the first information message to the first target node through a first communication connection established between the proxy node and the first target node. According to the method, system and apparatus of the invention, a characteristic that the NAT gateway does not limits the inner network node to initiatively initiates a connection is utilized to realize the proxy node, and the proxy node forwards an information message which is transmitted to the inner network node by the public network node, and communication between the public network node and the inner network node can be realized.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a method, system and device for realizing inter-node communication. Background technique [0002] NAT (Network Address Translation, Network Address Translation) technology is a technology that isolates the internal network from the public network and converts private IP (Internet Protocol, Internet Protocol) addresses into legal and effective public network IP addresses. [0003] NAT technology allows multiple intranet nodes in the intranet to share a public IP address to access the public network. However, since the NAT technology only allows the internal network node to initiate a connection request to the public network node, the connection request initiated by the public network node to the internal network node will be rejected. Therefore, under the NAT networking, public network nodes cannot actively establish communication connections with internal network nodes...

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Problems solved by technology

However, since NAT technology only allows internal network nodes to initiate connection requests to public network nodes, connection requests initiated by public network nodes to internal network nodes will be rejected

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