AquaSec’s Daniel Sagi recently authored a blog post about DNS spoofing in Kubernetes. TLDR is that if you use default networking in Kubernetes you might be vulnerable to ARP spoofing which can allow pods to spoof (impersonate) the IP addresses of other pods. Since so much traffic is dialed via domain names rather than IPs, spoofing DNS can allow you to redirect lots of traffic inside the cluster for nefarious purposes.

We are excited to announce the general availability of Tigera Secure 2.5. With this release, security teams can now create and enforce security controls for Kubernetes using their existing firewall manager.

One of these problems is that Kubernetes has no login process. Ordinarily, the client software would initiate this login flow, but kubectl does not have this built in. Kubernetes leaves it up to you to design the login experience. In this post, I will explain the journey we took to get engineers logged in from the terminal and the challenges we faced along the way. The first step to SSO was to set up Dex as our Identity Provider.

Early adopter enterprises across verticals such as Retail, Manufacturing, Oil & Gas are looking to incorporate containers and Kubernetes as a way of modernizing their applications. Choosing k8s as a standard ensures that these applications can be deployed these on different data center infrastructures (bare metal/VMware/KVM on OpenStack etc) or on public clouds (AWS/Azure/GCP etc).

An emerging use case for containerized platforms has been the ability to deploy applications in what is termed as an air-gapped deployment. This deployment pattern is particularly pronounced around edge computing (more on that later in the blog series) – though there exist significant differences between edge clusters and air-gapped deployments. Air-gapped applications are those that run isolated from datacenter or internet connectivity.

In this article, we’ll explore Calico’s denial-of-service (DoS) mitigation features, including XDP-optimisation support introduced in Calico v3.7.