Security Hardening

How to Configure InfluxDB and Grafana on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure InfluxDB and Grafana on Debian 9

Introduction Deploying configure influxdb and grafana on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before you […]

Read more
Ubuntu 14.04 — python-rsa — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — python-rsa — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 March 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4478-1 Related CVEs: CVE-2020-13757 Upstream summary: It was discovered that Python-RSA incorrectly handled certain ciphertexts. An attacker could possibly use this issue to obtain sensitive information. Table of contents Symptom […]

Read more
Ubuntu 18.04 — speex — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — speex — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 March 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5280-1 Related CVEs: CVE-2020-23903 Upstream summary: It was discovered that Speex incorrectly handled certain WAV files. An attacker could possibly use this issue to cause a denial of service. Table […]

Read more
Oracle Linux 8 — nginx:1.14 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — nginx:1.14 — vulnerability — patch and remediation guide (ELSA-2019-2799)

🟠 High   ⏱ 15–60 min  Last verified: 20 March 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-2799 Related CVEs: CVE-2019-9513 CVE-2019-9511 CVE-2019-9516 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

Read more
How to Configure Zabbix Agent on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Zabbix Agent on Debian 10

Introduction How to Configure Zabbix Agent 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. This […]

Read more
Debian 9 — wireshark — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — wireshark — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-11408 CVE-2018-7334 CVE-2018-12086 CVE-2018-16056 CVE-2018-5334 CVE-2019-5716 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

Read more
Debian 10 — netqmail — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — netqmail — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 March 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-1513 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Common Problems 121668

Rsync Backup Jobs Timing Out Over SSH

🟡 Medium   ⏱ 5–30 min  Last verified: 19 March 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 & […]

Read more
Alpine Linux edge — perl-convert-asn1 — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — perl-convert-asn1 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.29-r0 📖 ~4 min read  •  Source: Alpine secdb entry — perl-convert-asn1 0.29-r0 Related CVEs: CVE-2013-7488 Upstream summary: Alpine main repository for vedge ships perl-convert-asn1 0.29-r0 which addresses CVE-2013-7488. Table of contents Symptom & Impact Environment […]

Read more
How to Configure AIX Fast Connect (SMB) on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure AIX Fast Connect (SMB) on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure aix fast connect (smb) on ibm aix 7.1 […]

Read more
CHAT