Debian 9

Debian 9 — coturn — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — coturn — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 February 2021 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-4056 CVE-2020-4067 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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How to Configure Logwatch Log Analyzer on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Logwatch Log Analyzer on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure logwatch log analyzer on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully and […]

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Common Problems 121614

Debian 9 – high CPU and disk I/O from systemd-journald

🟡 Medium   ⏱ 5–30 min  Last verified: 19 February 2021 Affected versions: Debian 9 📖 ~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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How To Install Apache Tomcat 9 on Debian 9 — step-by-step Linux tutorial on Progressive Robot

How To Install Apache Tomcat 9 on Debian 9

Apache Tomcat is a web server and servlet container that is used to serve Java applications. Tomcat is an open source implementation of the Java Servlet and JavaServer Pages technologies, released by the Apache Software Foundation. This tutorial covers the basic installation and some configuration of the latest release of Tomcat 9 on your Debian 9 server.

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How to Set Up Dovecot IMAP Server on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Dovecot IMAP Server on Debian 9

Introduction How to Set Up Dovecot IMAP Server on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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How to Enable AppArmor on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Enable AppArmor on Debian 9

Introduction Deploying enable apparmor on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before you begin, ensure […]

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How To Install and Configure GitLab on Debian 9 — step-by-step Linux tutorial on Progressive Robot

How To Install and Configure GitLab on Debian 9

GitLab CE, or Community Edition, is an open-source application primarily used to host Git repositories, with additional development-related features like issue tracking. It is designed to be hosted using your own infrastructure, and…

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Debian 9 — mysql-connector-java — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — mysql-connector-java — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 February 2021 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-2875 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Mount NFS Shares at Boot on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Mount NFS Shares at Boot on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up mount nfs shares at boot on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully […]

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Common Problems 121633

Debian 9: Fail2ban blocks internal monitoring IPs

🟡 Medium   ⏱ 5–30 min  Last verified: 26 January 2021 Affected versions: Debian 9 📖 ~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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