DNS

How to Install and Configure Samba File Server on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install and Configure Samba File Server on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up install and configure samba file server on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step […]

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Oracle Linux 8 — dnsmasq — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — dnsmasq — vulnerability — patch and remediation guide (ELSA-2021-0150)

🟠 High   ⏱ 15–60 min  Last verified: 17 July 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-0150 Related CVEs: CVE-2020-25685 CVE-2020-25681 CVE-2020-25683 CVE-2020-25684 CVE-2020-25687 CVE-2020-25682 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 121509

Debian 9 interrupted dpkg Requires Manual Configuration

🟠 High   ⏱ 5–30 min  Last verified: 16 July 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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Common Problems 115471

firewalld Zone-Interface Mismatch Causing Intermittent Access

🟡 Medium   ⏱ 5–30 min  Last verified: 16 July 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 […]

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Common Problems 115058

RHEL 8 nftables and firewalld Rules Conflict After Manual Changes

🟡 Medium   ⏱ 5–30 min  Last verified: 16 July 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 […]

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How to Configure GPG Key Management on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure GPG Key Management on Debian 9

Introduction Deploying configure gpg key management 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 […]

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How to Configure Alertmanager on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Alertmanager on Debian 10

Introduction Deploying configure alertmanager on debian 10 on a Debian 10 Buster 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 Ensure Debian 10 Buster […]

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How to Create an Intranet with OpenVPN on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How to Create an Intranet with OpenVPN on Ubuntu 16.04

Intranets are private networks created by organizations to ease communication and data transfers. In this tutorial you’ll configure services that are only available to clients who are connected to the VPN, including file shares and a web site, and you’ll learn how to manage access to those resources. When you’re done, you’ll have a basic intranet you can easily expand to meet your needs.

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Common Problems 118036

Ubuntu 18.04 LTS – SSH key authentication fails due to permission errors – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 15 July 2020 Affected versions: Ubuntu 18.04 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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