Automate Windows Patch Deployment with PowerShell
Hands-on guide for sysadmins to automate Windows patching with PSWindowsUpdate, scheduled scripts, reboot control, logging, and optional WSUS integration.
Optimize Windows 11 Boot: Services, Drivers, Fast Startup
Step by step guide for sysadmins to reduce Windows 11 boot time: analyze with Event Viewer and WPT, trim startups, fix drivers, and configure Fast Startup.
Manage Windows Firewall with PowerShell DSC at Scale
Practical guide to author, deploy, test, rollback, and audit Windows Firewall configurations across fleets using Windows Firewall PowerShell DSC.
Forward Windows Event Logs to Elastic Stack with Winlogbeat
Step by step guide for sysadmins to install and configure Winlogbeat on Windows and forward event logs to Elastic Stack securely and at scale.
Kubernetes API Server Hardening: Practical Security Checklist
Step-by-step Kubernetes API Server hardening checklist for Cybersecurity pros, with exact flags, audit policies, RBAC examples, TLS and network controls.
Linux SSH Hardening Guide: Keys, Rate Limits, Audit
Hands on Linux SSH hardening: enforce key based auth, disable password and root login, tune sshd_config, apply rate limits with nftables or iptables, add Fail2Ban.
Tune Linux vm.swappiness for Server Performance
Hands-on Linux server guide to measure swap, benchmark latency and throughput, tune vm.swappiness, enable zswap/zram, and make safe persistent changes.
Speed Up Linux Boot: Diagnose and Fix Boot Delays
Practical Linux troubleshooting to speed up Linux boot times, using systemd-analyze, journalctl, bootchart, service masking, initramfs and kernel tuning.
Limit systemd-journald Disk Usage on Linux Servers
Practical guide to control systemd-journald disk usage on Linux servers, including limits, vacuuming, compression, relocation, and monitoring to prevent full disks.
Linux Disk I/O Optimization and Tuning with fio
Step-by-step, command-focused guide to diagnose and optimize Linux disk I/O using fio, iostat, blktrace, sysctl tweaks, scheduler and filesystem tuning.