Dns

Introduction This guide explains how to configure Let’s Encrypt certificates using CertManager in a Kubernetes cluster managed with GitOps using Flux. We’ll use Cloudflare for DNS validation. By the end, you’ll have automated certificate issuance and management, improving security and ease of use. Prerequisites Before proceeding, ensure you have the following: Kubernetes Cluster: A running cluster. Flux: Installed and configured for GitOps. Cloudflare Account: Access with API token privileges. Overview of Steps Set up the namespace and Helm repository for cert-manager. Configure Cloudflare API tokens. Create staging and production issuers. Deploy certificates. Verify and troubleshoot the setup. Here is the repository tree that you likely have at this moment with - new files to deploy in orange - files to update in green ...

Introduction DNS leaks are commonly discussed as a privacy concern when using VPNs or other privacy tools. However, the real danger lies in data exfiltration from protected environments, even those with external access locked down in and out. The critical vulnerability is this: even if your DNS query goes to your private DNS resolver first, it eventually reaches the public internet to resolve unknown domains. If an attacker crafts a domain with a specifically configured DNS server, they can log these queries and extract sensitive data that was embedded in the subdomain. ...