Introduction This tutorial demonstrates how to Set Up CentOS Stream 9 in AWS on CentOS Stream 9. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered CentOS Stream 9 system with the default […]
Introduction This guide explains how to Automate Backups with rsync on FreeBSD 13 on FreeBSD 13. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained […]
How to Configure Nginx WebSocket Proxying on RHEL 7 WebSockets provide a full-duplex communication channel over a single TCP connection, enabling real-time features such as live chat, push notifications, collaborative editing, and live dashboards. Unlike traditional HTTP requests, a WebSocket connection is established through an HTTP upgrade handshake and then kept open indefinitely. Nginx can […]
Defense in depth for SSH with Fail2Ban, nftables, and the cloud provider Cloud Firewalls. Harden Ubuntu and block brute-force attacks via a bastion.
Introduction Setting up set up samba file sharing on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Samba File Sharing on CentOS Stream 9, with all the commands you need, the SELinux and firewalld […]
Introduction Deploying install nagios core on freebsd 13 on a FreeBSD 13 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base […]
Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying automate centos stream 9 with ansible both straightforward and auditable. This tutorial covers the complete procedure for how to Automate CentOS Stream 9 with Ansible, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]
Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install rabbitmq on freebsd 13 on FreeBSD 13 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. This […]
How to Set Up Windows Server 2016 Group Policy Modelling Group Policy Modelling (also known as RSoP Planning Mode) is a what-if analysis tool built into the Group Policy Management Console on Windows Server 2016. It allows administrators to simulate the Resultant Set of Policy for a user or computer before making changes, answering questions […]
Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying configure resource limits in kubernetes on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Resource Limits in Kubernetes on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the […]
