Network address translation method and device, gateway equipment and storage medium

Abstract

The invention discloses a destination address conversion method and device, gateway equipment and a storage medium, and relates to the computer network technology. The specific implementation scheme is as follows: receiving an IP access data packet sent by public network equipment; determining an IP address and a port number of a cloud server in a virtual private cloud VPC corresponding to the IPaccess data packet according to an elastic public network internet protocol address EIP instance pre-bound by the management server and a pre-created network address translation rule corresponding toeach EIP instance; converting a destination IP address in the IP access data packet into an IP address of a cloud server; converting a destination port number in the IP access data packet into a portnumber of a cloud server; and sending the converted IP access data packet to a cloud server. According to the embodiment of the invention, the gateway device can support the destination network address translation, so that the public network IP can be mapped to the cloud computing instance in the cloud server for use.

Description

technical field [0001] The present application relates to the field of computer application technology, and further relates to computer network technology, especially a network address translation method, device, gateway device and storage medium. Background technique [0002] Network Address Translation (NAT for short) gateways provide access to the Internet for private networks, allowing multiple cloud servers to share public network IP resources to access the Internet. Specifically, the NAT gateway can be bound to an Elastic IP Address (EIP for short) instance and shared bandwidth to implement many-to-one or many-to-many connections from internal network addresses to public network addresses for cloud servers. Address translation service. That is, when the internal network address wants to access the service on the public network address (such as web page access), the internal address will actively initiate a connection, and the gateway on the router or firewall will per...

AI Technical Summary

Problems solved by technology

However, the existing NAT gateway does not support destination network address translation, and cannot map the public network IP on the NAT gateway to the cloud computing instance in the cloud server in the VPC (Virtual Private Cloud, referred to as a virtual private cloud). If the cloud computing instance can provide Internet services, it is necessary to purchase additional load balancing products to realize this scenario

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