June 2020 - Page 39 of 66

How to Install Kibana on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Kibana on Debian 9

Introduction This guide explains how to Install Kibana 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 repositories […]

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Common Problems 113930

RHEL 10 – subscription-manager shows unknown repository status after registration – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: RHEL 10.0 RHEL 10.1 đź“– ~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 […]

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FreeBSD 12 — hadoop — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — hadoop — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 đź“– ~4 min read  â€˘  Source: FreeBSD VuXML VuXML topic: hadoop2 — unauthorized disclosure of data vulnerability Related CVEs: CVE-2014-0230 CVE-2014-7810 CVE-2015-1776 Upstream summary: Arun Suresh reports: RPC traffic from clients, potentially including authentication credentials, may be intercepted by a […]

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Ubuntu 16.04 — mqtt-client — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — mqtt-client — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) đź“– ~4 min read  â€˘  Source: Ubuntu Security Notice USN-6685-1 Related CVEs: CVE-2019-0222 Upstream summary: It was discovered that mqtt-client incorrectly handled memory while parsing malformed MQTT frames. An attacker could possibly use this issue to cause a crash, […]

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Python JSONPath Examples — step-by-step Python tutorial on Progressive Robot

Python JSONPath Examples

URL: https://www.progressiverobot.com/python-jsonpath-examples/ What is JSONPath? JSONPath is an expression language to parse JSON data. It's very similar to the XPath expression language to parse XML data. The idea is to parse the JSON data and get the value you want. This is more memory efficient because we don't need to read the complete JSON data. […]

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How to Set Up VLAN Tagging on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up VLAN Tagging on Debian 10

Introduction How to Set Up VLAN Tagging on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster 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 10. […]

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Ubuntu 18.04 — pam-python — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — pam-python — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) đź“– ~4 min read  â€˘  Source: Ubuntu Security Notice USN-4552-3 Related CVEs: CVE-2019-16729 Upstream summary: USN-4552-1 and USN-4552-2 fixed a vulnerability in Pam-python. The update introduced a regression which prevented PAM modules written in Python from importing python modules […]

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