Category: Amazon VPC

In a typical enterprise network, customers have VPCs across multiple accounts within an AWS Region to segment workloads. This segmentation can take different forms and depends on the company structure, security policy, business functions, and model. The drivers of the segmentation can vary. For example, segmentation could be driven by security and regulatory requirements, costs, […]

Update October 11, 2020 – While the implementations described in this post remain valid, it was written before Gateway Load Balancer became available. Gateway Load Balancer is designed specifically for adding firewalls and other virtual network appliances to your AWS network. If you would like to learn more, Introducing AWS Gateway Load Balancer: supported architecture […]

Direct Connect Senior Product Managers Madhura Kale and Erik Klavon contributed to this post. AWS Direct Connect (DX) has been a popular method for businesses to connect to AWS services, giving users a secure and reliable connection to an AWS Region. There are more than 100 DX locations available globally across major cities. However, you […]

As IT environments grow, they can become more complex, with additional accounts, VPCs, and the networking between them. AWS Transit Gateway is a service that addresses networking complexity by building a hub-and-spoke network to simplify your network routing and security. With Transit Gateway, you can connect your Virtual Private Clouds (VPCs) that span multiple accounts […]

If you have ever used Amazon Route 53 health checks to monitor resources, you know that monitored resources must have public IP addresses. This is because Route 53 health checkers are public and they can only monitor hosts with IP addresses that are publicly routable on the internet. You may want to monitor your resources […]

Amazon Virtual Private Cloud (Amazon VPC) provides you with the ability to create as many virtual networks as you need. It also provides different options for connecting these networks to each other and to non-AWS infrastructure, such as on-premises data centers, remote headquarters, or other offices. Most of you start this journey with a few […]

Resources in AWS rely heavily on their underlying network to deliver a service at optimal performance. For example, your databases could be fine-tuned and your front end application servers could be running on the most expensive, high-end Amazon EC2 instances available. However, if the underlying network is experiencing an issue, all of these beneficial factors […]

My first interaction with AWS was immediately after the launch of the Asia Pacific (Sydney) AWS Region, just a bit over 6 years ago. Back then, the AWS Management Console had fewer services, and I quickly found the Amazon Virtual Private Cloud (VPC). In under 10 minutes, I could define a new VPC, with subnets, […]

A public IP address is a big part of what is used to identify you on the public internet. In cases such as migration, whitelisting, or even IP address reputation, it can be important to you as the application owner, that your application’s IP address remains the same, or in the case of a migration, […]

If you have applications spread across multiple Virtual Private Clouds (VPCs) and want to expose those applications to the Internet, you can choose from different approaches. One option is to give each VPC its own dedicated connectivity to the Internet through an attached Internet gateway. Another approach is to centralize access from the Internet through […]