Networking & Content Delivery

Category: Technical How-to

Preserving client IP address with Proxy protocol v2 and Network Load Balancer

When a load balancer or proxy cannot preserve the client’s original IP address, it may rewrite the IP address or use its own IP address for routing purposes. In this scenario, common practices such as inserting the original IP address into the request headers (for example, X-Forwarded-For) or utilizing Proxy protocol are widely used to […]

How to identify website performance bottlenecks by measuring time to first byte latency and using Server-Timing header

While website performance issues are a common occurrence, pinpointing their root causes can be a challenging task. In this post, you will learn how to simplify the performance troubleshooting process by unlocking the potential of the Server-Timing header. This header allows backend components to communicate timing metrics and other insights relevant to performance monitoring in […]

Protect against bots with AWS WAF Challenge and CAPTCHA actions

Protecting against bot threats requires insights into the client environment beyond what is available through network-level characteristics of a request, such as TCP or HTTP payload signatures. AWS WAF uses CAPTCHA and Challenge actions to undertake a client-side interaction, whether on a mobile device or browser, to understand this client environment before they can be […]

Introducing dual-stack without public IPv4 Application Load Balancer

In May 2024, Amazon Web Services (AWS) launched a new feature for internet-facing Application Load Balancers. This enhancement allows you to provision an internet-facing Application Load Balancer without needing public IPv4 addresses, enabling clients to connect using only IPv6 addresses. To connect, clients resolve the AAAA DNS records assigned to the Application Load Balancer. The […]

How to use Amazon Athena queries to analyze AWS WAF logs and provide the visibility needed for threat detection

Web application security is an ongoing process. AWS WAF enables real-time monitoring and blocking of potentially harmful web requests. Bot Control and Fraud Control use machine learning (ML) to detect and prevent sophisticated threats. Bot traffic can make up anywhere from 30% to 50% or even more of total web traffic. After enabling AWS WAF, […]

IPv6 deployment models for AWS Network Firewall

AWS Network Firewall is a managed, stateful network firewall and intrusion protection service that allows you to implement firewalls rules for fine grained control over your network traffic. If you’re new to AWS Network Firewall, and want to understand its features and use cases, we recommend you review the blog post AWS Network Firewall – […]

How to seamlessly migrate traffic between Direct Connect gateways

In this blog post, we explore a scenario in which Goldman Sachs, wanted to transfer ownership of several of its key network components between teams in a controlled and seamless manner. Specifically, we take a deep dive on migrating traffic between Direct Connect gateways while maintaining end-to-end connectivity. As a multinational investment bank and financial […]

How to monitor internet traffic to CloudFront edge in one click with Amazon CloudWatch Internet Monitor

Amazon Web Services (AWS) offers a streamlined solution for you to monitor internet traffic to your CloudFront distribution with simple integration for Amazon CloudWatch Internet Monitor in the Amazon CloudFront console. Ensuring optimal performance and availability is paramount for internet applications. With this integration, you can easily gain more insights into internet health and your users’ experience for an application that you’ve set up with a CloudFront distribution.

How to share IP address ranges across accounts with AWS Global Accelerator

Maintaining ownership of IP addresses while deploying resources in multiple accounts can lead to underutilized IP address ranges. AWS Global Accelerator supports cross-account sharing for bring your own IP addresses (BYOIP), which enables you to share IP address ranges with multiple AWS accounts. After you provision an IP address range with Global Accelerator using BYOIP, […]

Using Amazon Route 53 Profiles for scalable multi-account AWS environments

Amazon Web Services (AWS) customers implement multi-account strategies so that multiple teams can deploy workloads in separate organizational units (OUs) and AWS accounts. Cloud administrators are using this practice through offerings such as AWS Control Tower and AWS Organizations. These services help them get things done using individual accounts while maintaining centralized control for governance […]