Firewall

How to Configure netstat and netpmon on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure netstat and netpmon on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure netstat and netpmon on ibm aix 7.2 on […]

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How to Use AIX Volume Groups and Logical Volumes on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use AIX Volume Groups and Logical Volumes on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use aix volume groups and logical volumes on ibm […]

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How to Use Resource Monitor on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Use Resource Monitor on Windows Server 2016

How to Configure Windows Server 2016 Resource Monitor Resource Monitor is a built-in diagnostic tool in Windows Server 2016 that provides a detailed, real-time view of how CPU, memory, disk, and network resources are being consumed by individual processes. Unlike Performance Monitor, which focuses on counter-based historical trends, Resource Monitor excels at pinpointing exactly which […]

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How to Monitor Nginx with Prometheus on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Monitor Nginx with Prometheus on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up monitor nginx with prometheus on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux […]

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How to Set Up Nagios on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Nagios on Debian 9

Introduction This guide explains how to Set Up Nagios on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the standard […]

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How to Configure OpenSSH Server on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure OpenSSH Server on Windows Server 2019

OpenSSH Server on Windows Server 2019 Windows Server 2019 ships with OpenSSH as an optional Windows capability. Installing the OpenSSH Server component provides a native SSH daemon (sshd) that allows Linux administrators, developers, and automation tools to manage Windows servers using the same SSH workflow they use for Linux—including key-based authentication, SFTP file transfer, and […]

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How to Configure Nginx with ModSecurity WAF on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Nginx with ModSecurity WAF on RHEL 7

How to Configure Nginx with ModSecurity WAF on RHEL 7 While ModSecurity is most commonly associated with Apache, it also runs as a dynamic module for Nginx through the ModSecurity-nginx connector. On RHEL 7, the official Nginx packages do not ship with ModSecurity built in, so you have two practical paths: compile Nginx and ModSecurity […]

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How to Configure SCOM Monitoring for Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure SCOM Monitoring for Windows Server 2016

How to Set Up System Center Operations Manager (SCOM) on Windows Server 2016 System Center Operations Manager (SCOM) is Microsoft’s enterprise-grade monitoring platform that provides comprehensive health monitoring, alerting, and performance tracking for Windows Server 2016, Linux servers, network devices, and cloud workloads. SCOM uses Management Packs (MPs) to define what to monitor and how […]

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Common Problems 112952

Windows Server 2016 — PXE clients fail to obtain boot options from DHCP policy classes on Server 2019 — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 31 October 2019 Affected versions: Windows Server 2016 📖 ~2 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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Common Problems 115524

LVM Logical Volume Full Causing Service Outages

🟡 Medium   ⏱ 5–30 min  Last verified: 30 October 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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