July 2019 - Page 7 of 61

Common Problems 119146

Ubuntu 14.04 LTS – UFW rules disappear after reboot – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 28 July 2019 Affected versions: Ubuntu 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 Set Up Graylog on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up Graylog on SLES 15

Introduction This tutorial covers How to Set Up Graylog 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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Common Problems 118628

Ubuntu 16.04 LTS – apt repositories moved to old-releases after EOL – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 July 2019 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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openSUSE Tumbleweed — monerod — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — monerod — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2017-8798 Upstream summary: Integer signedness error in MiniUPnP MiniUPnPc v1.4.20101221 through v2.0 allows remote attackers to cause a denial of service or possibly have unspecified […]

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FreeBSD 12 — linux_base-f — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — linux_base-f — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 July 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: glibc — getaddrinfo stack-based buffer overflow Related CVEs: CVE-2015-0235 CVE-2015-7547 Upstream summary: Fabio Olive Leite reports: A stack-based buffer overflow was found in libresolv when invoked from nss_dns, allowing specially […]

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How To Write End-to-End Tests in Node.js Using Puppeteer and Jest — step-by-step Javascript tutorial on Progressive Robot

How To Write End-to-End Tests in Node.js Using Puppeteer and Jest

End-to-end testing (e2e for short) is a process in which the entire lifecycle of an application is tested from a user’s perspective in a production-like scenario. In this tutorial, you will write an e2e test in Node.js that validates that the account creation and login features of a sample web page, using Puppeteer to crawl the site and Jest to make unit tests.

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How to Configure Windows Server 2019 Firewall — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Windows Server 2019 Firewall

How to Configure Windows Server 2019 Firewall Windows Defender Firewall with Advanced Security (WFAS) on Windows Server 2019 is a host-based stateful packet filter that protects the server from unauthorized network access. It supports inbound and outbound filtering, connection security rules using IPsec, and profile-based policies for Domain, Private, and Public network locations. Properly configuring […]

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Alpine Linux edge — postfixadmin — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — postfixadmin — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 3.0.2-r0 📖 ~4 min read  •  Source: Alpine secdb entry — postfixadmin 3.0.2-r0 Related CVEs: CVE-2017-5930 Upstream summary: Alpine community repository for vedge ships postfixadmin 3.0.2-r0 which addresses CVE-2017-5930. Table of contents Symptom & Impact Environment […]

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