Como proteger o seu sistema Request Tracker (RT) contra as falhas de segurança — Guia definitivo

 

Aprenda a corrigir as vulnerabilidades CVE-2026-6841, CVE-2026-41073, CVE-2026-41075 e CVE-2026-41076 no Request Tracker (Debian). Guia prático com comandos reais, script de automação, mitigação alternativa com iptables e proxy reverso, e livro recomendado sobre hardening de servidores Linux.

libsoup no openSUSE: Guia Completo para Identificar e Corrigir Vulnerabilidades HTTP

 

Guia completo para identificar e corrigir vulnerabilidades no libsoup do openSUSE/SUSE Linux. Comandos reais, script de automação, mitigação com iptables/AppArmor e dicas de hardening para manter seus sistemas seguros por muito tempo após o lançamento do patch.

Como identificar e corrigir vulnerabilidades no kernel do Linux (openSUSE) – Guia prático e atemporal

Verifique, corrija e mitigue falhas no kernel do openSUSE. Script pronto, iptables, AppArmor + livro de segurança por R$49,60. Guia atemporal.

The Permanent Firefox ESR Security Hardening Guide

 

Secure your Linux system for good: Learn how to check, fix, and automate Firefox ESR security updates on Debian/Ubuntu. Includes a permanent bash script, iptables fallback, and a recommended security book. Stop chasing CVEs—build lasting defense.

Kea DHCP Stack Overflow: A Practical Guide to Checking, Patching, and Blocking (CVE-2026-3608)

 

A stack overflow in Kea DHCP (CVE-2026-3608) can crash your DHCP servers remotely. Learn to check, patch, or block it with iptables. Includes automation scripts for Ubuntu, Rocky, and SUSE. No fluff, just commands.

The Ultimate Guide to Kernel Livepatching (Without Reboots)

 

Stop rebooting your SUSE Micro servers. Learn how to apply, automate, and verify kernel livepatches for moderate CVE fixes on Ubuntu, Rocky, and SUSE. Includes a no-update mitigation script.

How to Patch openSUSE Kernel Vulnerabilities (Race Conditions & RDMA Bugs)

 

Learn to check, fix, and automate kernel patches for critical Linux vulnerabilities (CVE-2025-38234 & CVE-2026-23243) on openSUSE. Includes full bash script, iptables/AppArmor mitigations, and a custom lab setup with a Raspberry Pi kit.

Your OpenSUSE Kernel Hardening Playbook

 

A practical guide to SUSE/openSUSE kernel security updates: check your system, automate patching, and apply AppArmor/iptables mitigations. Works for any kernel CVE – not just one news cycle.

From Panic to Patching: A Long-Term Guide to Securing Apache Tomcat

 

Stop chasing zero-days. Learn to check, patch, and harden Apache Tomcat on Ubuntu, Rocky, SUSE. Includes automation scripts & iptables mitigation. Stay secure long-term.

How to Harden rust-sequoia-git on Fedora Linux

 

Discover how to secure rust-sequoia-git on Fedora Linux by fixing a broken hard revocation vulnerability. This guide offers commands to check your current version, an iptables workaround, plus a practical DNF update script to secure your Git commit signing policy permanently.

The Linux Kernel Got 8 Security Fixes: Here’s Your Permanent Action Plan

 

Stop chasing kernel CVE dates. Learn to check, patch, and mitigate Linux kernel vulnerabilities (like the 8 fixes in SUSE-SU-2026:21096-1) on Ubuntu, Rocky, and SUSE. Includes a universal bash script, iptables fallback, and a recommended security book for deep defense. 

StrongSwan no openSUSE: guia completo para verificar vulnerabilidades, aplicar correções e mitigar falhas (com script automático)

 

Aprenda a proteger seu servidor openSUSE contra vulnerabilidades no strongSwan (CVE-2026-47895). Guia completo com comandos de verificação, script de atualização automática, mitigações com iptables/AppArmor e recomendações de leitura para segurança Linux duradoura. 

Hardening Redis Against Memory Corruption and Lua Sandbox Escapes

 

Stop chasing Redis CVEs. Master Linux security with a pro's approach. Learn to check for memory corruption & Lua flaws, apply fixes via script, and lock down your server with iptables & ACLs. Includes an automation script and a pro-level book.

Critical Corosync Flaw: How to Secure Your Linux Cluster (Even If You Can’t Update Now)

 

One UDP packet crashes your Corosync cluster. Check, patch, or firewall it. Commands for Ubuntu, Rocky, SUSE + bash script .

Kerberos (krb5) Security Update: NegoEx DoS Vulnerabilities Explained

 

Learn how to protect your Fedora Linux systems from NegoEx parsing vulnerabilities (CVE-2026-40355, CVE-2026-40356) in MIT Kerberos 5 (krb5). Includes manual checks, automation scripts, and firewall-based workarounds for unpatched systems. Practical guide for system administrators.

strongSwan no SUSE: da Correção Urgente à Segurança Duradoura para sua VPN IPsec

 

Aprenda a identificar, corrigir e mitigar a vulnerabilidade double‑free no strongSwan (CVE‑2026‑47895) em distribuições SUSE. Comandos práticos, script de automação, mitigação com firewall e recomendações de leitura para aprofundar seus conhecimentos em segurança de redes.

CVE-2026-9064 no 389-ds-base: Guia Definitivo para Proteger seu Servidor LDAP no Rocky Linux

 

 A vulnerabilidade CVE-2026-9064 no 389-ds-base permite negação de serviço remota via requisições LDAP maliciosas. Aprenda a verificar, corrigir e mitigar o problema no Rocky Linux com comandos práticos, script de automação e alternativas para quando não é possível atualizar imediatamente. Proteja sua infraestrutura de autenticação agora.

Debian Asterisk DLA-4631-1: Guia Definitivo para Corrigir Buffer Overflows no Seu PBX

 

 Aprenda a identificar, corrigir e se proteger contra as vulnerabilidades CVE-2025-65102, CVE-2026-25994 e CVE-2026-26203 no Asterisk para Debian 11. Comandos práticos, script de automação e medidas de mitigação para manter seu PBX seguro agora e no futuro.

.NET on Linux: Stop Guessing About Security Patches (A Practical Guide)

 

Running .NET 9 on Linux? Unpatched runtimes expose your servers to remote code execution. This guide shows you how to check your systems, apply the fix with a universal bash script, and block attacks with iptables if you cannot reboot today. Includes automation for Ubuntu, Rocky, and SUSE.

TigerVNC Security – How to Stop Other Users from Spying on Your Remote Session

 

CVE-2026-34352 lets other users spy on your TigerVNC session. Here's how to check, patch (Ubuntu/Rocky Linux/SUSE), apply iptables workarounds, and automate the fix with a bash script.