Host connection communication system and connection method

Abstract

The invention discloses a host connection communication system and a connection method, and the system comprises a first host and a signaling server, and the first host is in communication connectionwith the signaling server; a second host is in communication connection with the signaling server; and a relay server connected as needed. Network connection security among multiple hosts can be effectively ensured on the premise that ports are not exposed.

Description

technical field [0001] The invention relates to the technical field of local area network, and more specifically relates to a communication system and a connection method for connecting a host. Background technique [0002] At present, a local area network refers to a computer group that is interconnected by multiple computers in a certain area, generally within a few kilometers; the local area network can realize file management, application software sharing, printer sharing, scheduling in the working group, email and fax communication services and other functions; the local area network is closed and can be composed of two computers in an office, or thousands of computers in a company. [0003] However, when multiple hosts belong to different LANs, the current main connection methods are as follows: [0004] (1) Using VPN [0005] The disadvantage of this solution is that the signaling must rely on the Internet service provider of the virtual private network and cannot b...

AI Technical Summary

Problems solved by technology

[0007] This solution is a relatively feasible solution at present. Start the service process on the controlled end to connect to the relay server, generate the connected external network IP address and port number, and connect the master control end to the IP address and port number to send signaling to the intermediate server , when the relay server receives the signaling, it forwards it to the local service process of the controlled end and forwards it to the designated port to achieve Unicom. The disadvantage of this solution is that the port number of the internal network is directly exposed to the external network, which threatens network security.

Images