http://0.0.0.0:4000/ Through my blog, I would like to share my insights, experiences, and tutorials on a wide range of topics, from coding and networking to cybersecurity and virtualization. With a knack for breaking down complex concepts into digestible pieces, I empower my readers to master the intricacies of technology and stay ahead in an ever-changing digital landscape. Whether you're a seasoned developer or a tech enthusiast, Jorani's blog is a valuable resource for anyone looking to expand their knowledge and skills in the world of technology. 2026-06-13T11:26:09-05:00 Ahmed Aljorani http://0.0.0.0:4000/ Jekyll © 2026 Ahmed Aljorani /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2025-12-25T08:30:00-06:00 2025-12-25T08:30:00-06:00 http://0.0.0.0:4000/posts/mininet-hands-on-emulation-sdn-controllers-and-custom-topologies/ Ahmed Aljorani

Mininet is network emulation software that lets you launch a virtual network — switches, hosts, and an SDN controller — all with a single command on one Linux machine. It is the fastest way to start learning about SDN and OpenFlow, test controller logic, and prototype topologies without owning a single piece of physical hardware. This guide is structured as three progressive hands-on labs, eac...

2025-12-18T08:30:00-06:00 2025-12-18T08:30:00-06:00 http://0.0.0.0:4000/posts/mininet-network-emulation-and-sdn-testing/ Ahmed Aljorani

Mininet is an open-source network emulator that creates a realistic virtual network — hosts, switches, routers, links — on a single Linux machine in seconds. Each host runs in a lightweight Linux network namespace with its own interfaces, routing table, and process space. Switches are real Open vSwitch (OVS) or Linux bridge instances. Links are virtual Ethernet pairs with configurable bandwidth...

2025-12-11T08:30:00-06:00 2025-12-11T08:30:00-06:00 http://0.0.0.0:4000/posts/vyos-installation-configuration-and-usage/ Ahmed Aljorani

VyOS is an open-source network operating system built on Debian Linux. It provides the routing, firewall, VPN, and traffic-management capabilities of enterprise routers — Cisco IOS, Juniper JunOS — in a freely available, fully scriptable platform that runs on commodity hardware, virtual machines, and public cloud instances. Unlike GUI-driven firewalls such as OPNsense or pfSense, VyOS is entir...

2025-12-04T08:30:00-06:00 2025-12-04T08:30:00-06:00 http://0.0.0.0:4000/posts/opnsense-installation-configuration-and-usage/ Ahmed Aljorani

OPNsense is an open-source, FreeBSD-based firewall and routing platform forked from pfSense in 2015. It combines enterprise-grade security features — stateful packet inspection, intrusion detection, VPN, traffic shaping, and high availability — with a clean, modern web interface and a weekly release cadence that keeps it ahead of most commercial alternatives. OPNsense runs on commodity hardwar...

2025-11-27T08:30:00-06:00 2025-11-27T08:30:00-06:00 http://0.0.0.0:4000/posts/open-vswitch-installation-configuration-and-usage/ Ahmed Aljorani

Open vSwitch (OVS) is a production-quality, open-source multilayer virtual switch designed to enable network automation through programmatic extension while supporting standard management interfaces and protocols such as NetFlow, sFlow, IPFIX, RSPAN, CLI, LACP, and 802.1ag. It is the default virtual switch in many hypervisors, cloud platforms (OpenStack, oVirt), and container networking solutio...