Method and device for NAT (Network Address Translation) traversal of SIP (Session Initiation Protocol) message in Genesys environment

Abstract

The invention provides a method and a device for NAT (Network Address Translation) traversal of an SIP (Session Initiation Protocol) message in a Genesys environment. NAT traversal of the SIP message can be realized without special authentication of Genesys, the work efficacy of the Genesys can be sufficiently utilized, and the cost is saved. The method for NAT traversal of the SIP message in the Genesys environment comprises the steps of loading a module which is responsible for NAT traversal of the SIP message in an SIP proxy server; performing parameter setting on the module; and forwarding an SIP message request going through the parameter setting.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to a method and device for NAT traversal of SIP messages in Genesys environment. Background technique [0002] With the development of computer network technology, the internal network of some enterprises' private addresses can use NAT (Network Address Translation, Network Address Translation) to convert the private address into a legal public IP address when sending data packets through a router. . In this way, a local area network only needs to use a small number of public network addresses to meet the communication requirements of all computers in the private address network and the Internet. At the same time, it can also hide the private network internal hosts and protect the security of the internal network. [0003] When NAT converts a private address into a legal public IP address, it will automatically modify the source IP address and destination IP address of the...

AI Technical Summary

Problems solved by technology

[0010] However, VPN or SBC-based NAT / firewall traversal depends on a specific VPN or SBC server and related software, and needs to be certified by the Genesys manufacturer

However, the existing solutions such as STUN, TURN, ICE, uPnP and other solutions for SIP traversal through NAT usually either need to modify the configuration of the existing NAT / firewall, or require the support of SIP phones or SIPServer, which often cost a lot

[0011] During use, it is found that the blocking of SIP by NAT / firewall is mainly manifested in: the source IP address: port pair in the Via and Contact header fields of the SIP protocol is not changed when passing through the NAT device, resulting in incorrect response messages or subsequent requests routing

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