Como instalar o Discourse no Ubuntu 18.04
O Discourse é uma plataforma de discussão de código aberto. Ele pode ser usado como uma lista de e-mail, um fórum de discussões ou uma sala de bate-papo em formato longo. Neste tutorial,…
Amazon Linux 2 — inkscape — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read • Source: Amazon Linux advisory ALAS2-2023-2043 Related CVEs: CVE-2021-42700 CVE-2021-42702 CVE-2021-42704 Upstream summary: Inkscape 0.91 is vulnerable to an out-of-bounds read, which may allow an attacker to have access to unauthorized information. (CVE-2021-42700) Inkscape version […]
How To Install DenyHosts on CentOS 6
DenyHosts is a security tool written in python that monitors server access logs to prevent brute force attacks on a virtual private server. The program works by banning IP addresses that exceed a certain number of failed login attempts. This tutorial explains how to install denyhosts, how to whitelist your IP address, and where to find the denyhosts configuration file. It is written for CentOs.
How to Compile and Run Java Program from another Java Program
Have you ever thought if it's possible to compile and run a java program from another java program? We can use Runtime.exec(String cmd) to issue commands to the underlying operating system. We will use the same approach to compile and run a java program from another java program. Compile and Run Java Program from another […]
Oracle Linux 8 — go-toolset:ol8 — security and stability fixes — required update (ELSA-2023-0446)
🟡 Medium ⏱ 10–30 min Last verified: 19 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2023-0446 Related CVEs: CVE-2022-41715 CVE-2022-2880 CVE-2022-2879 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]
Alpine Linux edge — mitmproxy — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 7.0.3-r0 📖 ~4 min read • Source: Alpine secdb entry — mitmproxy 7.0.3-r0 Related CVEs: CVE-2021-39214 Upstream summary: Alpine community repository for vedge ships mitmproxy 7.0.3-r0 which addresses CVE-2021-39214. Table of contents Symptom & Impact Environment […]
RHEL 8 NetworkManager DNS Misconfiguration Causes Intermittent Name Resolution
🟡 Medium ⏱ 5–30 min Last verified: 19 March 2021 📖 ~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 & Cross-Refs References & Further […]
How to Automate Windows Server 2016 Provisioning with PowerShell and Terraform
Introduction Automating Windows Server 2016 provisioning with PowerShell and Terraform enables fully repeatable, infrastructure-as-code server deployments. PowerShell handles operating system configuration, role installation, and application setup. Terraform manages the underlying infrastructure layer — creating virtual machines on Hyper-V, Azure, or VMware — and passes configuration data to PowerShell via user data scripts or provisioners. Together […]
How to Analyze System Errors with diag on IBM AIX 7.1
Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to analyze system errors with diag on ibm aix 7.1 […]
Oracle Linux 8 — spamassassin — vulnerability — patch and remediation guide (ELSA-2021-4315)
🟡 Medium ⏱ 10–30 min Last verified: 19 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-4315 Related CVEs: CVE-2020-1946 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
