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DNS

Getting started with DNS attacks

Whenever an online service goes down, you're likely to hear three words: "it was DNS!" Blaming DNS might be a running joke among network admins and engineers, but it's one rooted in experience. DNS problems are known for causing massive, Internet-wide outages such as the 2021 Akamai outage that temporarily made the websites for Delta Air Lines, American Express, Airbnb, and others unreachable.

The Power of Shipa CNAMEs

As a software engineer, I admit I am not the best at networking. Can’t connect to your app for some reason, one going joke is to “always blame DNS” e.g the Domain Name System. My personal DNS experience is usually editing a few records for my personal blog and connecting a few tools and that is it. Thanks to distributed systems, had to learn all about SRV records and some more DNS concepts.

Securing DNS: interrupting attacks as early as possible

While MSPs have been making significant investments in security and offering services, it is a challenge to keep up with the frequency and evolving sophistication of today’s cybersecurity threats. Defense in Depth (DiD) is the foundation on which most MSPs have built a layered security approach for dealing with them.

Kubernetes Tips: How to find the Port of a Service with a DNS request

Last week I created a guide for our users to set up an NGINX service as an API Gateway with Qovery. The API gateway must redirect the incoming traffic to the appropriate service with the correct port. My problem is that the API Gateway does not know the ports exposed for every service. In this post, I will show you a quick tip on finding the port of a Kubernetes service with a single DNS request. Let's go!

How to Troubleshoot Your Network Using Traceroute

Anyone who has investigated the cause behind a network issue knows how daunting it can be to pinpoint the problem. With so many different variables, the answer can be elusive. In our last blog, we explained how you could test your DNS speeds in PerfOps. Today, we’ll be showing you how to use our Traceroute tool to troubleshoot network issues and improve DNS speeds.

Automatically Manage DNS for Kubernetes with ExternalDNS and Tanzu Mission Control Catalog

If you have ever deployed Kubernetes services, you understand the pain of having to maintain DNS records for an ever-growing number of internal and external services. ExternalDNS helps address this pain and reduces the amount of toil required for manual record keeping by programmatically updating DNS servers. Before we get into the details of how that works, let’s quickly review what functionality the ExternalDNS package provides.