🟡 Medium ⏱ 5–30 min Last verified: 9 June 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~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 […]
Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying use network-bound disk encryption (nbde) both straightforward and auditable. This tutorial covers the complete procedure for how to Use Network-Bound Disk Encryption (NBDE) on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]
Introduction Setting up configure vlan interfaces on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure VLAN Interfaces on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and how to validate the […]
🟡 Medium ⏱ 5–30 min Last verified: 8 June 2026 Affected versions: Ubuntu 26.04 LTS Ubuntu 26.04 Ubuntu 26.04.1 📖 ~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 ⏱ 5–30 min Last verified: 8 June 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~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 […]
🟢 Low ⏱ 5–15 min Last verified: 8 June 2026 Affected versions: Debian 13 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2015-3206 Upstream summary: The checkPassword function in python-kerberos does not authenticate the KDC it attempts to communicate with, which allows remote attackers to cause a denial of service (bad […]
rkhunter (Rootkit Hunter) is a security tool that scans for rootkits, backdoors, and local exploits on Linux systems. It checks for known malware, suspicious file attributes, hidden files, and unusual system configurations. This guide installs and configures rkhunter on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS A user […]
🟡 Medium ⏱ 5–30 min Last verified: 8 June 2026 Affected versions: Ubuntu 26.04 LTS Ubuntu 26.04 Ubuntu 26.04.1 📖 ~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 […]
AppArmor (Application Armor) is a Linux kernel security module that restricts program capabilities using per-program profiles. It is enabled by default on Ubuntu and provides Mandatory Access Control (MAC) to contain the blast radius of exploited applications. This guide manages AppArmor profiles on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu […]
The ELK Stack (Elasticsearch, Logstash, Kibana) is a powerful log management and analytics platform. Elasticsearch stores and indexes logs, Logstash collects and transforms them, and Kibana provides visualisation dashboards. This guide installs the ELK stack on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with at least 4 GB […]
