Debian 9

Debian 9 — libvirt — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — libvirt — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 31 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-1000256 CVE-2018-1064 CVE-2019-10161 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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Common Problems 121488

SSH Access Denied After Security Hardening Changes

🔴 Critical   ⏱ 5–30 min  Last verified: 28 March 2020 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 PostgreSQL on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install PostgreSQL on Debian 9

Introduction This guide explains how to Install PostgreSQL on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the standard repositories […]

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How to Install and Configure ISC DHCP Server on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install and Configure ISC DHCP Server on Debian 9

Introduction Deploying install and configure isc dhcp server 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 […]

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Debian 9 — libapache2-mod-auth-mellon — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — libapache2-mod-auth-mellon — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-3877 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 Install Elasticsearch on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Elasticsearch on Debian 9

Introduction This guide explains how to Install Elasticsearch on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the standard repositories […]

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Debian 9 — python-django — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — python-django — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 26 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-14574 CVE-2018-7536 CVE-2019-6975 CVE-2019-14232 CVE-2019-19844 CVE-2019-3498 CVE-2020-13254 CVE-2020-7471 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix […]

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How to Configure S3FS FUSE Mount on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure S3FS FUSE Mount on Debian 9

Introduction How to Configure S3FS FUSE Mount 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 9. […]

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How To Set Up an OpenVPN Server on Debian 9 — step-by-step Linux tutorial on Progressive Robot

How To Set Up an OpenVPN Server on Debian 9

OpenVPN is a full-featured, open-source Secure Socket Layer (SSL) VPN solution that accommodates a wide range of configurations. In this tutorial, you will set up an OpenVPN server on a Debian 9 server and then configure access to it from Windows, OS X, iOS and/or Android devices. This tutorial will keep the installation and configuration steps as simple as possible for each of these setups.

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