Cloud gateway, cloud gateway management device, and method thereof

A cloud gateway management device comprising:

• a storage device configured to store a plurality of modules which are collections of instructions;
• and
• at least one processor configured to execute the plurality of modules which are collections of instructions, the modules comprising:
• a request receiving module configured to receive a creation request for creating a cloud gateway from a user;
• a creation module configured to create a cloud gateway when the request receiving module receives the creation request, wherein the cloud gateway is a virtual machine;
• a network card generating module configured to generate a plurality of virtual network cards in the cloud gateway, each virtual network card being used to connect to a corresponding network;
• a network address assignment module configured to assign a corresponding network address for each virtual network card;
• and
• a configuration module configured to configure the cloud gateway according to network configuration information including the network address of each virtual network card.