A Network That Networks — Part 2: Deployment Usage and Expansion


The previous article explored technological options to achieve contactless access systems in the workplace to replace smartcards or key type entry. An application was developed to achieve this feat using Alibaba Cloud solutions at the infrastructure level.

Infrastructure Requirement

A Virtual Private Cloud (VPC) needs to be set up at the workplace and has to be connected to the organization’s on-premises data center where its member information is stored. This adds another layer of complexity to the infrastructure and provides a secure and robust connection to maintain a high level of service.

VPN Gateway

Alibaba Cloud VPN Gateway service can be deployed to establish a connection between the organization’s VPC and its on-premise data center.

NAT Gateway

An organization has to ensure that its applications are running at low latency and low-cost, even when the users increase. Service stability has to be ensured even with constant fluctuation.

  • Easy Usage: The Alibaba Cloud NAT Gateway provides SNAT and DNAT functions, which cuts down the need to build your own SNAT gateway for your servers. SNAT allows ECS instances without public IP addresses in a VPC to access the Internet. SNAT also offers a firewall functionality that prevents unwanted access to backend servers. After you configure SNAT entries to allow backend servers to initiate connections with specific external terminals, only these external terminals will be able to access the backend servers.

A Network That Networks: Part 3

The next part of this article series will discuss expansion scenarios for your organization to multi-zone and then from multi-zone to global expansion. To achieve this, Alibaba Cloud products and solutions can be leveraged for a more stable and reliable infrastructure.

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