Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

January 2024

Troubleshooting DNS issues in Kubernetes: Investigate and reduce NXDOMAIN (domain does not exist) responses

NXDOMAIN, indicating the non-existence of a queried domain, poses significant challenges within Kubernetes, impacting application functionality, service communication, and overall cluster stability. Investigating NXDOMAIN responses in Kubernetes is vital for sustaining the reliability, performance, and security in a containerized environment.

Calico Egress Gateway: How to provide a stable public network identity for EKS workloads to securely connect with approved SaaS

Many organizations have adopted IP address allowlisting for their corporate cloud applications as an added layer of security. Many sanctioned cloud applications and web services enforce access restrictions based on the source IP address of incoming traffic. To establish a connection with these remote SaaS services, your traffic must originate from a particular IP address that is pre-registered. Any traffic originating from different IP addresses will be denied access by these remote applications.

Deploy multi-tenant Red Hat OpenShift clusters with Calico's namespace and workload isolation

As you are using OpenShift or are planning to use it for your containerized applications, ensuring robust security is crucial. As you dive deeper and your workloads become more complex, the need for advanced security measures becomes apparent. This is where Calico’s microsegmentation capability helps to achieve tenant and workload isolation. Let’s explore how Calico can be a game-changer in strengthening the security posture of your OpenShift environment.