Ref: Oracle VirtualBox User Guide: VirtualBox supports configurable virtual network cards per VM, host-only networking connects VMs with each other and the host while keeping them away from the outside network, and VirtualBox includes a DHCP server for host-only/internal networks. (VirtualBox) (VirtualBox) Introduction Oracle VirtualBox provides several networking modes for virtual machines. Each mode answers …
Category: Computer Networks
Jun 28
How to? Disable VirtualBox DHCP for host-only network
Ref: AI Tools, ChatGPT, Similar “Disable VirtualBox DHCP for host-only network” means: Why this matters In your DHCP lab, students are installing and configuring DHCP Server on Windows Server 2019. But VirtualBox host-only networks can also have their own DHCP server. If VirtualBox DHCP is enabled, then the client VM may get an IP address …
Dec 02
SMTP: Purpose, Installation, Steps, Data Format
Below is a 30–40 minute SMTP lesson plan suitable for college-level networking courses . It includes: purpose, tools, installations, commands, protocol operations, Telnet interaction, data formats, and references to typical Wireshark visuals (without reproducing copyrighted images). 📘 SMTP Lesson Plan (30–40 Minutes) Topic: Simple Mail Transfer Protocol (SMTP)Audience: Networking / IT StudentsGoal: Understand SMTP purpose, …
Nov 26
How to Run the GNS3 VM Inside Oracle VirtualBox
How to Run the GNS3 VM Inside Oracle VirtualBox Here is a clean, fully rewritten, plagiarism-free, blog-ready version that covers both the step-by-step tutorial and the architecture diagram explanation, merged into one smooth article. You can publish this as-is. How to Run the GNS3 VM Inside Oracle VirtualBox A Complete Guide GNS3 becomes far more …
Nov 26
Polished: How to Find and Import Cisco Router Images (BIN/IMAGE) Into GNS3
Polished: How to Find and Import Cisco Router Images (BIN/IMAGE) Into GNS3 (By ChatGPT) To use classic Cisco routers such as the 3725 in your GNS3 labs, you’ll need the correct IOS image files. This guide explains where to find them, where to store them, and how to import them properly into GNS3. Where to …
Nov 26
How to Configure VirtualBox Network Adapters for the GNS3 VM (with GNS3 GUI)
Here is a polished, blog-ready version — fully rewritten, original, plagiarism-free, and safe for publishing. How to Configure VirtualBox Network Adapters for the GNS3 VM (with GNS3 GUI) Setting up the GNS3 VM correctly inside VirtualBox is essential if you want the GNS3 GUI on your computer to communicate smoothly with the backend VM. This …
Nov 26
Some Details on Network Adapter Settings for GNS VM in VirtualBox
Here is a polished, blog-ready rewrite — copyright-free, plagiarism-free, and integrity-safe. How to Configure Network Adapters for the GNS3 VM in VirtualBox When running the GNS3 VM inside VirtualBox, proper network adapter configuration is essential. The GNS3 GUI on your host system relies on these adapters to communicate with the VM, manage devices, and build …
Nov 26
Polished For Blog Post: What ARP Actually Does During a Ping. Why ARP Shows a Hostname Like private_66 When You Ping a Device
Polished For Blog Post: What ARP Actually Does During a Ping. Why ARP Shows a Hostname Like private_66 When You Ping a Device Here is a clean, polished, blog-ready rewrite — copyright-free, plagiarism-free, and integrity-safe. (ChatGPT) Why ARP Shows a Hostname Like private_66 When You Ping a Device When capturing network traffic, it’s common to …
Nov 26
How to assign a Static IP address to an Ubuntu Box
How to assign a Static IP address to an Ubuntu Box sudo nano /etc/netplan/02-network-manager.yaml The file name can be different sudo nano /etc/netplan/02-network-manager-all.yaml Configure as below: #Run: sudo netplan apply Check if you have an IP ip address show
Nov 25
Using Let’s Encrypt With Apache2 (HTTPS Setup)
By ChatGPT as is: Below is a clear step-by-step guide to using Let’s Encrypt (free SSL) with Apache2.This assumes you already have a domain pointing to your server’s public IP. ✅ Using Let’s Encrypt With Apache2 (HTTPS Setup) Method: Certbot (recommended) Let’s Encrypt issues FREE SSL certificates, automated and trusted by browsers. 1. Install Certbot …
