System of soft exchange network passing through firewall based on ALG+MP and its method

A soft switch and firewall technology, applied in the field of network communication, can solve problems such as the inability to establish communication, the difficulty of business for enterprise users and broadband users, etc.

Inactive Publication Date: 2006-06-28
武汉市中光通信公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The untranslated private network address cannot be routed on the public network, so communication cannot be established
Therefore, it is very difficult for enterpri

Method used

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  • System of soft exchange network passing through firewall based on ALG+MP and its method
  • System of soft exchange network passing through firewall based on ALG+MP and its method
  • System of soft exchange network passing through firewall based on ALG+MP and its method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0076] Further illustrate below in conjunction with accompanying drawing and embodiment:

[0077] 1. System

[0078] image 3 It is a typical ALG networking scheme diagram.

[0079] The network connected to the first private network C1 and the A network card 10 of the first ALG1.1 is located in the same network segment,

[0080] The network connected to the second private network C2 and the A network card 10 of the second ALG1.2 is located in the same network segment, ...,

[0081] The network connected to the nth private network Cn and the A network card 10 of the nth ALG1.n is located in the same network segment;

[0082] Multiple ALG1s communicate with one set of MGC5; MGC5 is either in a private network or in a public network;

[0083] Each ALG1 communicating with the MGC5 interconnects the networks of the two network segments through the A network card 10 and the B network card 9 .

[0084] There can only be directly registered terminals on MGC5. If you want to have ...

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Abstract

This invention discloses a system and a method for passing through fire walls based on the ALG+MP soft exchange network composed of an ALG1, MP2, LAN exchanger3, FW4, MGC5, IAD6, an ordinary phone set 7 and SPY 8, in which, the ordinary phone set is accessed into LAN exchanger3 then to IP by IAD6 to call controlled by MGC5 and matches with MGC5 to finish the penetration of FW4 by ALG1 and MP2, ALG1 sets up the communication connection between terminals and MP2 to realize communication among terminals by the forward of medium flows of MP2.

Description

technical field [0001] The invention relates to a method for a softswitch network to pass through a firewall in the field of network communication, in particular to an application layer gateway (ALG) program and a media proxy server (MP) program. Background technique [0002] Network Address Translation (NAT) is a standard method for mapping one address domain, such as a corporate intranet, to another address domain, such as the Internet; it allows hosts in a private network to use private addresses to connect to the public domain It can relieve the exhaustion of 32-bit long IPv4 (referring to the network based on the fourth version of IP) address resource. On the other hand, in order to improve network security, most enterprises deploy a firewall (Firewall, FW for short) at the egress. Most applications integrate the address translation function and firewall on one device to ensure the security of the private network, provide security policies, and prevent external attacks...

Claims

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Application Information

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IPC IPC(8): H04L12/70H04L29/06
Inventor 刘会松毕海
Owner 武汉市中光通信公司
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