August 2019 - Page 29 of 69

How to Implement Network Segmentation on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Implement Network Segmentation on SLES 15

Introduction This tutorial covers How to Implement Network Segmentation on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: zypper refresh […]

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Debian 9 — apache2 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — apache2 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-15710 CVE-2017-3167 CVE-2017-9788 CVE-2017-9798 CVE-2018-17189 CVE-2019-9517 CVE-2019-10092 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution […]

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How to Get Started with FreeBSD — step-by-step Linux tutorial on Progressive Robot

How to Get Started with FreeBSD

FreeBSD is a secure, high performance operating system that is suitable for a variety of server roles. In this guide, we will cover some basic information about how to get started with a server running FreeBSD 11.2.

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A GraphQL SDL Reference — step-by-step DevOps tutorial on Progressive Robot

A GraphQL SDL Reference

Here’s a quick and dirty reference for the GraphQL Schema Definition Language (SDL), which gives us a succinct syntax to define your GraphQL schemas.

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How to Configure Security Compliance Baselines on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Security Compliance Baselines on Windows Server 2012 R2

How to Configure Security Compliance Baselines on Windows Server 2012 R2 Microsoft’s Security Compliance Toolkit (SCT) provides pre-built, tested Group Policy baselines for Windows Server 2012 R2 that align with both Microsoft’s own security recommendations and industry frameworks such as CIS and NIST. Rather than building a security baseline from scratch, the SCT gives you […]

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Common Problems 119160

Ubuntu 14.04 LTS repository 404 errors after end-of-life

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 📖 ~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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openSUSE Tumbleweed — libykcs11 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libykcs11 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2018:2623-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-14779 CVE-2018-14780 Upstream summary: A buffer overflow issue was discovered in the Yubico-Piv 1.5.0 smartcard driver. The file lib/ykpiv.c contains the following code in the […]

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Common Problems 119159

Ubuntu 14.04 LTS apt repositories return 404 after EOL

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: 14.04 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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How to Configure the APT Package Manager on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure the APT Package Manager on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure the apt package manager 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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