Troubleshooting

How to Use lsdev and lscfg for Device Inventory on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Use lsdev and lscfg for Device Inventory on IBM AIX 7.1

Introduction IBM AIX 7.1 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 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use lsdev and lscfg for device inventory on ibm […]

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How to Use smit fastpath Shortcuts on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use smit fastpath Shortcuts 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 smit fastpath shortcuts on ibm aix 7.2 on […]

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FreeBSD 12 — nettle — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — nettle — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: nettle 3.7.2 — fix serious ECDSA signature verify bug Upstream summary: Niels Möller reports: I've prepared a new bug-fix release of Nettle, a low-level cryptographics library, to fix a serious […]

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How to Configure PHP-FPM with Nginx on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure PHP-FPM with Nginx on FreeBSD 12

Introduction How to Configure PHP-FPM with Nginx on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet […]

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How to Configure Hyper-V Network Virtualisation on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Hyper-V Network Virtualisation on Windows Server 2012 R2

How to Configure Hyper-V Network Virtualisation on Windows Server 2012 R2 Hyper-V Network Virtualisation (HNV) in Windows Server 2012 R2 allows multiple virtual networks to share the same physical network infrastructure while remaining logically isolated from each other. This enables multi-tenant environments, simplifies VM mobility across different physical subnets, and is the network foundation for […]

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FreeBSD 12 — bftpd — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — bftpd — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: bftpd — Multiple vulnerabilities Upstream summary: Bftpd project reports: Bftpd is vulnerable to out of bounds memory access, file descriptor leak and a potential buffer overflow. Table of contents Symptom […]

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Amazon Linux 2 — evolution-ews — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — evolution-ews — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2020-1475 Related CVEs: CVE-2019-3890 Upstream summary: It was discovered evolution-ews before 3.31.3 does not check the validity of SSL certificates. An attacker could abuse this flaw to get confidential information […]

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How to Configure Podman Compose on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Podman Compose on RHEL 7

How to Configure Podman Compose on RHEL 7 Podman Compose is a Python script that implements the Docker Compose file specification against the Podman container engine. It allows you to use your existing docker-compose.yml files with Podman, either with the rootless model for increased security or as root on systems where Docker is not installed. […]

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FreeBSD 12 — oops — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — oops — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: oops — format string vulnerability Related CVEs: CVE-2005-1121 Upstream summary: A RST/GHC Advisory reports that there is an format string vulnerability in oops. The vulnerability can be found in the […]

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How to Install Elasticsearch on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Elasticsearch on RHEL 7

How to Install Elasticsearch on RHEL 7 Elasticsearch is a distributed, RESTful search and analytics engine built on Apache Lucene. It is widely used for full-text search, log aggregation, and real-time data analysis. This guide walks you through installing and configuring Elasticsearch on Red Hat Enterprise Linux 7, including repository setup, basic cluster configuration, JVM […]

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