rem vs em Units in CSS
A brief look at perhaps the two most popular relative units in CSS: em and rem. From this post you’ll finally grasp what the exact difference is between them.
SLES 15 — libksba8 — multiple vulnerabilities (5 CVEs) — patch and remediation guide
🔴 Critical ⏱ 15–90 min Last verified: 19 March 2023 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE advisory SUSE-CU-2022:2627-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-3515 CVE-2022-47629 CVE-2014-9087 CVE-2016-4574 CVE-2016-4579 Upstream summary: A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The […]
How to Configure Network Load Balancing (NLB) on Windows Server 2022
Introduction to Network Load Balancing on Windows Server 2022 Network Load Balancing (NLB) is a built-in Windows Server feature that distributes incoming TCP/IP traffic across multiple servers in a cluster. Unlike Windows Server Failover Clustering (WSFC), which provides high availability by moving a service from a failed node to a healthy one, NLB distributes load […]
Como Instalar o WordPress com um Banco de Dados Gerenciado no Ubuntu 18.04
Uma versão anterior deste tutorial foi escrita por Justin Ellingwood O WordPress é o CMS (sistema de gerenciamento de conteúdo) mais popular da Internet. É uma ótima opção para colocar um…
Oracle Linux 9 — nss — security and stability fixes — required update (ELSA-2023-1368)
🟠 High ⏱ 15–60 min Last verified: 18 March 2023 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2023-1368 Related CVEs: CVE-2023-0767 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
RHEL 7 Legacy service Script Conflicts with systemctl Unit
🟡 Medium ⏱ 5–30 min Last verified: 18 March 2023 Affected versions: RHEL 7 📖 ~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 & […]
How to Configure PAM (Pluggable Authentication Modules) on RHEL 9
PAM (Pluggable Authentication Modules) is the framework that sits between Linux applications and the underlying authentication mechanisms. Almost every program that authenticates users on RHEL 9 — SSH, su, sudo, login, and graphical sessions — goes through PAM. By configuring PAM you can enforce password complexity requirements, lock accounts after failed login attempts, set resource […]
AlmaLinux 9 — perl-HTTP-Tiny — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read • Source: AlmaLinux ALSA ALSA-2023:6542 Related CVEs: CVE-2023-31486 Upstream summary: HTTP::Tiny is a small and simple HTTP/1.1 client written in Perl. Security Fix(es): * http-tiny: insecure TLS cert default (CVE-2023-31486) For more details about the security […]
How to Install Apache on Oracle Linux 9
Introduction Oracle Linux 9 ships with a stable, security-hardened base that makes deploying install apache on oracle linux 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Apache on Oracle Linux 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]
Windows Server 2022 — KB5025277 — multiple vulnerabilities (20 CVEs) — patch and remediation guide
🔴 Critical ⏱ 15–90 min Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read • Source: Microsoft KB5025277 • MSRC update-guide entry Related CVEs: CVE-2023-21554 CVE-2023-28219 CVE-2023-28220 CVE-2023-28231 CVE-2023-28232 CVE-2023-28250 CVE-2023-21769 CVE-2023-21729 +12 more Affected components: Windows Server 2022 Table of contents Symptom & Impact Environment & Reproduction Root […]
