Quality of Service (QoS) with the Linux traffic control subsystem (tc) gives you precise control over bandwidth allocation, latency, and scheduling for network interfaces on RHEL 8. Using the Hierarchical Token Bucket (HTB) queuing discipline you can guarantee minimum bandwidth to critical services, cap bandwidth for bulk transfers, and prioritize interactive traffic over background workloads. […]
🟡 Medium ⏱ 10–30 min Last verified: 14 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2020-4451 Related CVEs: CVE-2019-8846 CVE-2020-3897 CVE-2020-3900 CVE-2020-9895 CVE-2019-8813 CVE-2020-9806 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
Introduction This tutorial covers How to Set Up a Static IP Address on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read • Source: Amazon Linux advisory ALAS2LYNIS-2023-001 Related CVEs: CVE-2019-13033 CVE-2020-13882 Upstream summary: In CISOfy Lynis 2.x through 2.7.5, the license key can be obtained by looking at the process list when a data upload is […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read • Source: Gentoo GLSA GLSA-202101-23 Related CVEs: CVE-2020-28948 CVE-2020-28949 CVE-2020-36193 CVE-2018-1000888 Upstream summary: Multiple vulnerabilities have been discovered in PEAR Archive_Tar. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact […]
🟡 Medium ⏱ 15–45 min Last verified: 14 March 2021 Affected versions: IBM AIX 7.1 📖 ~4 min read • Source: NVD CVE-2021-29812, IBM Support Bulletin CVE: CVE-2021-29812 NVD summary: IBM Jazz for Service Management 1.1.3.10 and IBM Tivoli Netcool/OMNIbus_GUI is vulnerable to stored cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript […]
Introduction This tutorial demonstrates how to Configure Redis Sentinel on Oracle Linux 8 on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with the default […]
🟢 Low ⏱ 5–15 min Last verified: 14 March 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5274-1 Related CVEs: CVE-2020-14409 CVE-2020-14410 Upstream summary: It was discovered that Simple DirectMedia Layer library incorrectly handled memory when parsing certain specially crafted .BMP files. An attacker could possibly use […]
Introduction How to Install Xdebug for PHP 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 […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read • Source: Gentoo GLSA GLSA-202107-14 Related CVEs: CVE-2020-28924 Upstream summary: Passwords generated with rclone were insecurely generated and are vulnerable to brute force attacks. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]
