How to Configure tmux on a Cloud Server
tmux is a terminal multiplexer that allows you to access a tmux terminal using multiple virtual terminals. Learn how to configure it properly here.
Making Sense of Gradient Boosting in Classification: A Clear Guide
Learn how Gradient Boosting works in classification tasks. This guide breaks down the algorithm, making it more interpretable and less of a black box.
RHEL 7 sshd Fails Start Due To StrictModes Permissions
🟠 High ⏱ 5–30 min Last verified: 7 January 2020 Affected versions: RHEL 7 📖 ~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 & […]
How to Configure NPS for 802.1X Authentication on Windows Server 2012 R2
How to Configure NPS for 802.1X Authentication on Windows Server 2012 R2 Network Policy Server (NPS) is the Microsoft implementation of RADIUS (Remote Authentication Dial-In User Service) on Windows Server 2012 R2. When combined with 802.1X-capable network switches and wireless access points, NPS enables port-based network access control: devices can only connect to the network […]
Windows Server 2016 – RunAs fails with logon type 2 not granted – Fix & Prevention
🟡 Medium ⏱ 5–30 min Last verified: 7 January 2020 Affected versions: Windows Server 2016 📖 ~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 […]
Alpine Linux edge — pango — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.44.1-r0 📖 ~4 min read • Source: Alpine secdb entry — pango 1.44.1-r0 Related CVEs: CVE-2019-1010238 Upstream summary: Alpine main repository for vedge ships pango 1.44.1-r0 which addresses CVE-2019-1010238. Table of contents Symptom & Impact Environment […]
How to Convert String to Float in Python: Complete Guide with Examples
Learn how to convert strings to floats in Python using float(). Includes syntax, examples, error handling tips, and real-world use cases for data parsing.
FreeBSD 12 — php55-ftp — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 7 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: php5 — multiple vulnerabilities Related CVEs: CVE-2015-4643 CVE-2015-4644 Upstream summary: The PHP project reports: DOM and GD: Fixed bug #69719 (Incorrect handling of paths with NULs). FTP: Improved fix for […]
How to Configure Windows Server 2019 with Ansible
Introduction to Ansible for Windows Server 2019 Ansible is an open-source IT automation platform developed by Red Hat that enables infrastructure as code for provisioning, configuration management, application deployment, and orchestration. While Ansible was originally designed for Linux management using SSH, it fully supports Windows Server 2019 management using WinRM (Windows Remote Management) as the […]
openSUSE Tumbleweed — libXi6 — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory SUSE-SU-2013:1103-1 (see also SUSE bugzilla) Related CVEs: CVE-2013-1984 CVE-2013-1995 CVE-2013-1998 Upstream summary: Multiple integer overflows in X.org libXi 1.7.1 and earlier allow X servers to trigger allocation of insufficient memory and a […]