Introduction to SMB File Shares and NTFS Permissions on Windows Server 2019 SMB (Server Message Block) file sharing is the foundation of Windows file services. Windows Server 2019 uses SMB 3.1.1 — the latest protocol version — which includes AES-128-GCM encryption, pre-authentication integrity checking, and improved performance. Combined with NTFS permissions (the access control system […]
How to Configure Network QoS with tc on RHEL 7 Quality of Service (QoS) is the practice of managing network traffic to ensure that critical applications receive the bandwidth and latency guarantees they need. Linux provides a sophisticated traffic control subsystem accessible through the tc (traffic control) command, part of the iproute2 package. With tc, […]
How to Sync Time with Chrony on RHEL 7 Accurate system time is critical for nearly every networked service on a Linux server. Log correlation, SSL certificate validation, Kerberos authentication, database replication, and distributed systems all depend on clocks that are closely synchronized across machines. Red Hat Enterprise Linux 7 ships with Chrony as the […]
Role-Based Access Control (RBAC) is the primary authorization mechanism in Kubernetes, allowing you to define exactly which users and service accounts can perform which actions on which resources. On RHEL 8 clusters this is especially important when multiple teams share the same cluster or when you need to grant applications only the permissions they need […]
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 set up npiv virtual fibre channel on ibm aix […]
Introduction Deploying configure docker overlay networking 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 Ensure Debian […]
🟡 Medium ⏱ 5–30 min Last verified: 25 December 2019 📖 ~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 […]
Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up install and configure influxdb on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully and […]
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 set up aix system resource controller (src) subsystems on […]
How to Harden PHP on RHEL 7 PHP is one of the most widely deployed server-side languages in the world, and its default configuration is designed for convenience rather than security. On a production RHEL 7 server, leaving PHP at its defaults exposes your system to information disclosure, remote file inclusion, code injection, and privilege […]
