Relational databases are the cornerstone of data organization for a multitude of needs. They power everything from online shopping to rocket launches. A database that is both venerable but very much still in the game is PostgreSQL. PostgreSQL follows most of the SQL standard, has ACID transactions, has support for foreign keys and views, and is still in active development.
Accurate time keeping is critical for almost any service or software. Emails, loggers, event systems and schedulers, user authentication mechanisms, and services running on distributed platforms all need accurate timestamps to record events in chronological order. These…
In this tutorial, you will set up an internal DNS server using two Ubuntu 20.04 servers. You will use the BIND name server software (BIND9) to resolve private hostnames and private IP addresses. This provides a central way to manage your internal hostnames and private IP addresses, which is indispensable when your environment expands to more than a few hosts.
See how to easily define a routing hierarchy using child routes with the Angular router.
🟠 High ⏱ 15–60 min Last verified: 22 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2023-5360 Related CVEs: CVE-2022-25883 CVE-2023-32559 CVE-2023-32002 CVE-2023-32006 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]
Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying implement mandatory access control on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Implement Mandatory Access Control on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory openSUSE-SU-2020:1049-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-10749 Upstream summary: A vulnerability was found in all versions of containernetworking/plugins before version 0.8.6, that allows malicious containers in Kubernetes clusters to perform man-in-the-middle […]
🟠 High ⏱ 5–30 min Last verified: 22 September 2020 Affected versions: Windows Server 2012 R2 📖 ~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 […]
Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use nmon for performance monitoring on ibm aix 7.2 […]
This talk is intended to help jumpstart anyone with an interest in Web or Internet communications on the exciting new protocols QUIC and HTTP/3. It attempts to shed light on the sometimes-confusing world of Internet standards development, hopefully revealing that the tools and processes that are strikingly familiar to typical software development. Familiarity with networking principles such as TCP, UDP and TLS will be beneficial but is not a requirement for understanding.
