Sometimes users run into problems once they begin issuing queries on their data. In some database systems, including MySQL, query statements in must end in a semicolon (;) for the query to complete, as in the following example…
This article will go over how to enable SSH authentication using an OATH-TOTP app in addition to an SSH key. Logging into your server via SSH will then require two factors across two channels, thereby making it more secure than a password or SSH key alone.
🟡 Medium ⏱ 5–30 min Last verified: 27 January 2020 📖 ~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 […]
fail2ban provides a way to automatically protect virtual servers from malicious behavior. This tutorial shows you how to install Fail2Ban, copy the Configuration File, configure the fail2ban defaults, and find out how to configure the ssh defaults. This tutorial describes the required steps to set up fail2ban on Ubuntu.
🟢 Low ⏱ 5–15 min Last verified: 26 January 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4457-2 Related CVEs: CVE-2020-15709 Upstream summary: USN-4457-1 fixed a vulnerability in Software. This update provides the corresponding update for Ubuntu 14.04 ESM. Original advisory details: Jason A. Donenfeld discovered that […]
🟢 Low ⏱ 5–15 min Last verified: 26 January 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5173-1 Related CVEs: CVE-2019-14462 CVE-2019-14463 Upstream summary: It was discovered that libmodbus incorrectly handled inputs. An attacker could possibly use this issue to cause a denial of service or other […]
![Como criar um novo usuário com sudo no Ubuntu 18.04 [Guia de Início Rápido] — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/how-to-create-a-new-sudo-enabled-user-on-ubuntu-18-04-quickstart-pt-77268-featured.png "Como criar um novo usuário com sudo no Ubuntu 18.04 [Guia de Início Rápido] 7")
O comando sudo fornece um mecanismo para a concessão de privilégios de administrador (normalmente, apenas disponível para o usuário root) para usuários normais. Este guia mostrará como criar um novo usuário com acesso sudo no Ubuntu 18.04, sem precisar modificar o…
🟡 Medium ⏱ 5–30 min Last verified: 24 January 2020 📖 ~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 […]
One way to increase the effectiveness of your Logstash setup is to collect important application logs and structure the log data by employing filters. In this guide, we will focus primarily on how to add filters for various common application logs.
🟡 Medium ⏱ 5–30 min Last verified: 23 January 2020 Affected versions: 16.04 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 & […]
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