DNS

How to Configure Blackbox Exporter for Endpoint Monitoring on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Blackbox Exporter for Endpoint Monitoring on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up configure blackbox exporter for endpoint monitoring on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each step […]

Read more
Common Problems 120545

Debian 11 Failed to Fetch Due to Proxy Misconfiguration

🟡 Medium   ⏱ 5–30 min  Last verified: 11 March 2022 Affected versions: Debian 11 📖 ~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 & […]

Read more
Debian 10 — bind9 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — bind9 — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 March 2022 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-8616 CVE-2020-8619 CVE-2020-8625 CVE-2021-25214 CVE-2021-25219 CVE-2021-25220 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

Read more
How to Set Up Sensu Monitoring on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Sensu Monitoring on Debian 9

Introduction How to Set Up Sensu Monitoring 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. […]

Read more
Gentoo Linux — net-dns/unbound — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-dns/unbound — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202212-02 Related CVEs: CVE-2022-3204 CVE-2022-30698 CVE-2022-30699 Upstream summary: Multiple vulnerabilities have been discovered in Unbound. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & […]

Read more
How to Configure OSPF with FRRouting on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure OSPF with FRRouting on Debian 11

Introduction Deploying configure ospf with frrouting on debian 11 on a Debian 11 Bullseye 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 You will […]

Read more
How to Perform an Active Directory Health Check on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Perform an Active Directory Health Check on Windows Server 2016

How to Configure Windows Server 2016 Active Directory Health Check Maintaining a healthy Active Directory environment on Windows Server 2016 is essential for reliable authentication, Group Policy application, and resource access across the organisation. A proactive health check routine helps identify replication failures, DNS misconfigurations, lingering objects, and SYSVOL inconsistencies before they escalate into user-impacting […]

Read more
How to Configure Network Bridging on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Network Bridging on Debian 11

Introduction How to Configure Network Bridging on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye 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 11. This […]

Read more
Common Problems 120511

Debian 11 – Network Interface Rename Breaks Connectivity – Persistent Naming Fix

🟠 High   ⏱ 5–30 min  Last verified: 9 March 2022 Affected versions: Debian 11 📖 ~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 & […]

Read more
How to Set Up NFS Server and Client on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up NFS Server and Client on Debian 11

Introduction This guide explains how to Set Up NFS Server and Client on Debian 11 on Debian 11 Bullseye. Debian Bullseye 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 11 install […]

Read more
CHAT