June 2020 - Page 16 of 66

openSUSE Tumbleweed — perl-XML-Twig — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — perl-XML-Twig — vulnerability — 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-2020:1177-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-9180 Upstream summary: perl-XML-Twig: The option to `expand_external_ents`, documented as controlling external entity expansion in XML::Twig does not work. External entities are always expanded, regardless […]

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An Introduction to Mesosphere — step-by-step Docker tutorial on Progressive Robot

An Introduction to Mesosphere

Mesosphere is a software solution that expands upon the cluster management capabilities of Apache Mesos with additional components to provide a new and novel way to manage server infrastructures. In this tutorial, we will briefly explain what each key component of Mesosphere does, starting with Apache Mesos, and show how each is used in the context of Mesosphere.

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The Apache HTTP Server: Powering the Web for Decades

The Apache HTTP Server: Powering the Web for Decades

The Apache HTTP Server, commonly known as Apache, has played a vital role in the evolution of the internet. Since its inception in 1995, Apache has become the most widely used web server software, powering millions of websites worldwide. In this article, we will explore the history, features, and significance of the Apache HTTP Server, along with some valuable resources for further learning.

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Common Problems 112992

Windows Server 2016 — RRAS NAT translation table saturation causes outbound traffic drops during peak usage — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Windows Server 2016 📖 ~2 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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Alpine Linux edge — json-c — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — json-c — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.14-r1 📖 ~4 min read  •  Source: Alpine secdb entry — json-c 0.14-r1 Related CVEs: CVE-2020-12762 Upstream summary: Alpine main repository for vedge ships json-c 0.14-r1 which addresses CVE-2020-12762. Table of contents Symptom & Impact Environment […]

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Common Problems 112433

Windows Server 2019 — DNSSEC validation failures after trust anchor rollover on Windows Server 2019 resolvers — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Windows Server 2019 📖 ~2 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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What is CSS? — step-by-step DevOps tutorial on Progressive Robot

What is CSS?

CSS (Cascading Style Sheets) is a stylesheet language used to control the presentation of websites. Alongside HTML and JavaScript, CSS is one of the core technologies of the World Wide Web.

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Vectors in Python - A Quick Introduction! — step-by-step Python tutorial on Progressive Robot

Vectors in Python – A Quick Introduction!

URL: https://www.progressiverobot.com/vectors-in-python/ Hello, folks! Today, we will be having a look at one of the most unaddressed topics in Python that is, Vectors in Python. So, let us begin! First, what is a Vector? A vector in a simple term can be considered as a single-dimensional array. With respect to Python, a vector is a […]

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