Introduction How to Install Telegraf on RHEL 10 on RHEL 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible and production-safe. […]
Set up Apache virtual hosts on Ubuntu is one of the most powerful and commonly used features of the Apache HTTP Server, allowing a single server to host multiple websites or domains with completely separate content, configurations, and document roots.
In 2025–2026, installing and securing Redis on Ubuntu is a critical task for developers and sysadmins using Redis as a fast in-memory cache, session store, message broker, or real-time data engine. By default, Redis listens on all interfaces without authentication—leaving it vulnerable if port 6379 is exposed. This step-by-step guide shows you exactly how to install and secure Redis on Ubuntu (22.04 LTS, 24.04 LTS, and later), including binding to localhost, setting a strong password (or ACLs), renaming/disabling dangerous commands, and verifying everything works.
In 2025-2026, understanding how to open a port on Linux is essential for running services like web servers, databases, or custom apps. Ports act as communication endpoints: well-known ports (0-1023) are reserved for standard services (e.g., SSH 22, HTTP 80, HTTPS 443), while higher ports (1024+) suit user-defined applications.
In today’s digital landscape, implementing robust Linux server security best practices is crucial to protect against evolving threats like brute-force attacks, vulnerabilities, and data breaches. Neglecting server hardening during setup can expose your infrastructure to risks, leading to costly downtime or compromises.
🟠 High ⏱ 5–30 min Last verified: 4 February 2026 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~1 min read Table of contents Problem Summary Symptoms Diagnostics Root Cause Primary Fix Verification Prevention Rollback Automation Command Reference Escalation Related Notes Problem Summary podman pull from private registry fails with x509 errors. Symptoms Error says […]
Configuring logging in Nginx on Ubuntu is essential for monitoring server performance, troubleshooting errors, and ensuring security. Whether you’re dealing with high-traffic websites or simple applications, knowing how to configure Nginx logging Ubuntu setups allows you to capture critical data without overwhelming your system. This comprehensive tutorial walks you through setting up access and error logs, implementing log rotation to manage disk space, and applying advanced configurations for optimal observability.
🟠 High ⏱ 5–30 min Last verified: 3 February 2026 Affected versions: RHEL 10 RHEL 10.0 RHEL 10.1 📖 ~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 & […]
🟠 High ⏱ 15–60 min Last verified: 3 February 2026 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: DNSdist — vulnerabilities Related CVEs: CVE-2016-7069 CVE-2017-7557 CVE-2024-25581 CVE-2025-30187 CVE-2026-0396 CVE-2026-0397 CVE-2026-24028 CVE-2026-24029 +3 more Upstream summary: https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html reports: CVE-2026-0396: HTML injection in the web dashboard CVE-2026-0397: Information disclosure via […]
🟢 Low ⏱ 5–15 min Last verified: 3 February 2026 Affected versions: Debian 13 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2017-9430 Upstream summary: Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a command […]
