Networking & Content Delivery

Tag: Route 53 Resolver

How to optimize DNS for dual-stack networks

Public IPv4 addresses have been a scarce resource going all the way back to 2011, when the Internet Assigned Numbers Authority (IANA) distributed the last block of unallocated public IPv4 addresses. Alongside, the private IPv4 range carved out by RFC1918 has also been too small for large networks and deployments, like containers that consume a […]

Integrating your Directory Service’s DNS resolution with Amazon Route 53 Resolvers

There are times when your client systems must resolve a Microsoft Active Directory’s Fully Qualified Domain Name (FQDN) before they can join a domain. Each VPC in your AWS environment is provisioned with a DNS resolver powered by Amazon Route 53. We call this an AmazonProvidedDNS. This resolver runs on the second IPv4 address from […]

Secure your Amazon VPC DNS resolution with Amazon Route 53 Resolver DNS Firewall

Introduction There are many services that help you configure network security within your Amazon Virtual Private Cloud (VPC), including security groups (SGs), network access control lists (network ACLs), and the AWS Network Firewall. These services inspect and filter network traffic, but they do not apply to DNS queries provided by Route 53 Resolver, potentially allowing […]

How to automatically parse Route 53 Resolver query logs

September 8, 2021: Amazon Elasticsearch Service has been renamed to Amazon OpenSearch Service. See details. Introduction For the majority of applications, DNS resolution is an essential requirement, whether they’re running on premises or in the cloud. Inside each of your Amazon VPCs, name resolution is provided by the Route 53 Resolver service. Being the center […]