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Community Blog What Is DMZ and How to Configure It on Alibaba Cloud?

What Is DMZ and How to Configure It on Alibaba Cloud?

This article introduces DMZ and steps to configure DMZ on Alibaba Cloud.

A DMZ (demilitarized zone) is a network segment that is physically or logically separated from a private internal network, but is still accessible from the Internet. It is typically used to host servers that need to be publicly accessible, such as web servers, email servers, or DNS servers. By isolating these servers from the internal network, the DMZ provides an additional layer of security and helps to protect the internal network from external attacks.

In Alibaba Cloud, you can configure a DMZ by creating a Virtual Private Cloud (VPC) network and then setting up one or more security groups to control access to the servers hosted in the DMZ.

Steps to Configure DMZ on Alibaba Cloud

  1. Create a VPC network: Log in to the Alibaba Cloud console, go to the VPC console, and click "Create VPC". Choose a VPC network type, set the CIDR block, and configure the routing table.
  2. Create a security group: In the VPC console, click "Security Groups" and then "Create Security Group". Set the security group name and description, and configure the inbound and outbound rules to control the traffic flow to and from the servers hosted in the DMZ.
  3. Create an ECS instance: In the ECS console, click "Create Instance" to create a new virtual machine instance that will be hosted in the DMZ. Choose the appropriate operating system and configuration settings.
  4. Assign an elastic IP address: To make the server accessible from the Internet, you need to assign an elastic IP address to the ECS instance. In the ECS console, go to the "Elastic IP Addresses" section and click "Allocate Elastic IP Address". Choose the appropriate VPC and availability zone, and then assign the elastic IP address to the ECS instance.
  5. Configure the DNS: To make the server accessible via a domain name, you need to configure the DNS. In the Alibaba Cloud DNS console, create a new DNS record that points to the elastic IP address of the server hosted in the DMZ.
  6. Configure the security group rules: In the security group console, configure the inbound and outbound rules to control the traffic flow to and from the server hosted in the DMZ. For example, you can allow incoming HTTP and HTTPS traffic to the web server, but block all other incoming traffic.

By following these steps, you can configure a DMZ in Alibaba Cloud and host publicly accessible servers securely.

VPC Networking IP Address Subnetting DMZ Demilitarized zone
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Dikky Ryan Pratama

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