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Nmap, a free and open-source network scanner, is used to discover hosts, open ports, services, and basic security issues on networks. It helps administrators and security testers in exploring the network’s running services, enabling more effective management and security. What Nmap does Scans 1 or many IPs to find which hosts are running and listening. Checks which TCP/UDP ports are open and what services/versions run on them. Attempts OS detection and run scripts to probe for known weaknesses. Syntax: nmap [options] <target> Pattern: nmap -sV -p 22,80,443 192.168.1.10 What nmap actually does Discovers live hosts on a network and maps their IP addresses, which helps build an inventory of devices. It scans TCP and UDP ports to identify open services (such as HTTP, SSH, and DNS) and often their versions. Additionally, it attempts to determine operating systems and device types using TCP/IP fingerprinting, along with basic firewall or filter behavior. Furthermore, it execute...

Hey there, tech whizzes!  PowerShell is a powerhouse for any Windows administrator. Plus, it’s great for keeping an eye on Windows network settings and services.  Windows PowerShell has truly changed the game for the Windows command line! Whether you’re managing configurations, installing software, or scripting,   Lets deep dive and explore top 10 commands which can be used to debug the network related issues. If you’re already comfortable with PowerShell, you know it’s a powerful ally for troubleshooting network hiccups. Below is a friendly rundown of the Top 10 PowerShell commands, you’ll want in your toolbox which helps in  PowerShell network troubleshooting . Each entry comes with a short description, the most useful parameters, and a real‑world example that you can copy‑paste right into your console.  Pro tip: Run these commands in an elevated PowerShell session (Run as Administrator) whenever you’re dealing with firewall rules or packet captures. 1. Test...

Top 10 Linux Commands for File and Folder Management Top 10 Linux Commands for File and Folder Management Linux file management commands are essential for anyone working with the Linux operating system. These Linux command-line tools help you navigate, organize, and maintain your filesystem efficiently. Whether you're a beginner or a Linux system administrator , mastering these commands will make your workflow faster and more reliable. 1. ls – List Directory Contents Purpose: View files/folders inside a directory using the Linux CLI basics . Common options: -l : Long listing format (permissions, owner, size, datetime) -a : Show hidden files (starting with dot) -h : Human-readable sizes (e.g., KB, MB) -R : Recursively list subdirectories Example: ls -lah /var/log Expected Output sample: drwxr-xr-x 5 root root 4.0K Nov 12 10:00 . drwxr-xr-x 14 root root 4.0K Nov 1 15:22 .. -rw-r--r-- 1 root root 1.2M Nov 12 09:...