Skip to content

Tech

Technical guides from real engineering practice: installation, integration, automation, troubleshooting and production operation of modern Linux and open-source platforms. The articles connect concrete configuration with architecture, security, lifecycle, monitoring and operations.

  • freeipa logo.
    Identity & Access

    FreeIPA Enterprise Architecture

    11 minutes read

    How to separate FreeIPA, DNS, PKI, HBAC, sudo, Keycloak and automation cleanly in larger Linux environments.

    : FreeIPA Enterprise Architecture
  • freeipa logo.
    Identity & Access

    Installing FreeIPA

    11 minutes read

    Step by step from an empty Linux server to a working FreeIPA lab with Kerberos, Web UI, first user, group and enrolled client.

    : Installing FreeIPA
  • Abstract Kubernetes cluster topology with security review and policy layers
    Security & Penetration Testing,  Kubernetes & Container Security

    Kubernetes Security Audit in Practice: Reviewing RBAC, Pod Security, NetworkPolicies and CIS

    13 minutes read

    Defensive Kubernetes security audit covering RBAC, ServiceAccounts, Pod Security, NetworkPolicies, Secrets, images, CIS, remediation and verification.

    : Kubernetes Security Audit in Practice: Reviewing RBAC, Pod Security, NetworkPolicies and CIS
  • Ansible logo.
    Ansible & Automation

    Install Ansible and create your first playbooks

    14 minutes read

    From installation through inventory and playbooks to a reusable Chrony role.

    : Install Ansible and create your first playbooks
  • Abstract decision matrix for security assessment, vulnerability scan and penetration testing
    Security & Penetration Testing

    Professional penetration testing for open-source and Kubernetes environments

    5 minutes read

    Differences between vulnerability scan, configuration review, security assessment and penetration test for modern open-source and Kubernetes platforms.

    : Professional penetration testing for open-source and Kubernetes environments