Linux

How to Set Up IPv6 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up IPv6 on Debian 9

Introduction This guide explains how to Set Up IPv6 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 […]

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How To Set Up Buildbot on FreeBSD — step-by-step Linux tutorial on Progressive Robot

How To Set Up Buildbot on FreeBSD

Buildbot is a job scheduling system commonly used for the purpose of continuous integration, a software development practice that typically comprises automatically building and testing your software on a regular basis and for every change. In this guide, we will cover the basics behind Buildbot’s components and install them on a FreeBSD system.

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How to Install Checkmk on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install Checkmk on Debian 10

Introduction This guide explains how to Install Checkmk on Debian 10 on Debian 10 Buster. Debian Buster 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 10 install with the standard repositories […]

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How To Install and Use Radamsa to Fuzz Test Programs and Network Services on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Use Radamsa to Fuzz Test Programs and Network Services on Ubuntu 18.04

Radamsa is an open-source fuzzing tool that can generate test-cases based on user-specified input data. Radamsa is fully scriptable, and so far has been successful in finding vulnerabilities in real-world applications, such as Gzip. In this tutorial, you will install and use Radamsa to fuzz test command-line and network-based applications using your own test cases.

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Oracle Linux 8 — .NET Core — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET Core — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 5 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2143 Related CVEs: CVE-2020-1108 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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Common Problems 121599

Debian 9 Disk Full in /var Causes Service Outages

🔴 Critical   ⏱ 5–30 min  Last verified: 4 September 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 121085

Debian 10 sudo Command Not Found or Permission Denied

🟠 High   ⏱ 5–30 min  Last verified: 4 September 2020 Affected versions: Debian 10 📖 ~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 118443

Ubuntu 16.04 LTS – SSH login hangs after authentication – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 4 September 2020 Affected versions: Ubuntu 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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