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In the news: GitGuardian Introduces NHI Governance; IBM Launches LinuxONE 5; OpenSSF Offers Free Course to Help Navigate EU Cyber Resilience Act; Rapid7 Announces MDR for Enterprise; Infoblox and Google Cloud Partner on DNS Security Solutions; IBM z17 Mainframe Engineered for AI; 2025 Open Source Job Survey Report; GitHub Launches Free Secret Risk Assessment Tool; Sonatype Offers End-to-End AI Software Composition Analysis; and Unmanaged Open Source Components Pose Serious Risks, Says Black Duck Report.

Self-Worth  

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Exploring my worth as a system administrator.

Weathering the Storm  

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The Kopia open source system for automating the creation and transfer of backups supports a wide range of remote storage devices, making it particularly useful as a backup tool in cloud environments. The convenient GUI for Windows installations holds its own against commercial products, despite its short development history.

Inspector  

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Learn how to develop a simple yet effective port scanner to analyze network security.

Phone Booth  

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FreePBX is a first-class replacement for commercial phone systems, even in complex setups.

Baseline  

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Puppet lets you enforce consistent, secure workstation configurations by emphasizing the use of declarative infrastructure and system-level protections such as chattr and systemd to prevent unauthorized changes and support a resilient security posture.

One Step Ahead  

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Nmap and Nessus can help you search for vulnerabilities on Active Directory domain controllers and shut them down. We show you how to use Nmap scans, set up Nessus, and test a DC.

Blocked  

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We assess the effectiveness of SELinux in protecting AI model deployments on RHEL 9, demonstrating its ability to block unauthorized access, modification, and resource exploitation through mandatory access control.

Blueprint for Success  

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The Kanister tool is an extensible open source framework for application-level data management and backups in Kubernetes.

Conductor  

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PipeCD is a lean CI/CD orchestrator for Kubernetes and other target platforms. We look at how it works in detail and what people migrating from ArgoCD can expect.

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