How To Set Up and Configure an OpenVPN Server on CentOS 8
OpenVPN is an open-source Virtual Private Network (VPN) application that lets you create and join a private network securely over the public Internet.
Oracle Linux 9 — GraalVM — vulnerability — patch and remediation guide (ELSA-2023-12316)
🟠 High ⏱ 15–60 min Last verified: 23 October 2022 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2023-12316 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 […]
How to Configure GitHub Actions Self-Hosted Runner on Debian 11
Introduction Deploying configure github actions self-hosted runner on debian 11 on a Debian 11 Bullseye 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 You […]
How To Install Apache Kafka on Ubuntu 14.04
Apache Kafka is a popular distributed message broker designed to handle large volumes of real-time data efficiently. A Kafka cluster is not only highly scalable and fault-tolerant, but it also has a much higher throughput compared to other message brokers such as ActiveMQ and RabbitMQ. Though it is generally used as a pub/sub messaging system, a lot of organizations also use it for log aggregation because it offers persistent storage for published messages.
Ubuntu 16.04 Kernel Panic on Boot After HWE Upgrade
🟡 Medium ⏱ 5–30 min Last verified: 22 October 2022 📖 ~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 […]
Debian 11 — geomview — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 22 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2017-17530 Upstream summary: common/help.c in Geomview 1.9.5 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct […]
Ubuntu 22.04 LTS – SSH connection refused after reboot – Fix & Prevention
🟠 High ⏱ 5–30 min Last verified: 22 October 2022 Affected versions: Ubuntu 22.04 LTS (Jammy) 📖 ~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 […]
Postfix Cannot Send Mail Due To DNS Or Relay Policy
🟡 Medium ⏱ 5–30 min Last verified: 22 October 2022 📖 ~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 […]
Debian 11 — zziplib — multiple vulnerabilities (20 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 22 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2007-1614 CVE-2017-5974 CVE-2017-5975 CVE-2017-5976 CVE-2017-5977 CVE-2017-5978 CVE-2017-5979 CVE-2017-5980 +12 more Upstream summary: Stack-based buffer overflow in the zzip_open_shared_io function in zzip/file.c in ZZIPlib Library before 0.13.49 allows user-assisted […]
How to Use IBM Tivoli Access Manager on IBM AIX 7.3
Introduction IBM AIX 7.3 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 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use ibm tivoli access manager on IBM AIX 7.3 […]
