January 2020 - Page 41 of 69

How to Install Keepalived for High Availability on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Keepalived for High Availability on Debian 9

Introduction This guide explains how to Install Keepalived for High Availability 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 […]

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How to Set Up OpenMPI on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Set Up OpenMPI 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 set up openmpi on ibm aix 7.1 on IBM […]

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Using Event Emitters in Node.js — step-by-step Javascript tutorial on Progressive Robot

Using Event Emitters in Node.js

Event emitters are objects in Node.js that trigger an event by sending a message to signal that an action was completed. In this article, you will create an event listener for a TicketManager JavaScript class that allows a user to buy tickets. You will set up listeners for the buy event, which will trigger every time a ticket is bought. This process will also teach you how to manage erroneous events from the emitter and how to manage event subscribers.

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FreeBSD 12 — libtiff — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libtiff — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libtiff — Improper Input Validation Related CVEs: CVE-2017-13726 CVE-2017-13727 Upstream summary: libtiff developers report: There is a reachable assertion abort in the function TIFFWriteDirectoryTagSubifd() in LibTIFF 4.0.8, related to tif_dirwrite.c […]

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How to Configure Bonding Network Interfaces on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Bonding Network Interfaces on Debian 10

Introduction Deploying configure bonding network interfaces on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will […]

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FreeBSD 12 — py34-notebook — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py34-notebook — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Jupyter Notebook — vulnerability Related CVEs: CVE-2018-8768 Upstream summary: MITRE reports: In Jupyter Notebook before 5.4.1, a maliciously forged notebook file can bypass sanitization to execute JavaScript in the notebook […]

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

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

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: uudeview buffer overflows Upstream summary: The authors of UUDeview report repairing two buffer overflows in their software. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick […]

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