Network Scanner Simulator
Master the fundamentals of network discovery and port scanning in a safe, sandbox.
What is the Network Scanner Simulator?
The Network Scanner Simulator is an educational browser tool that demonstrates how network port scanning works without performing any actual network requests. It simulates the process of discovering open ports on a given IP address or hostname, showing you what a real port scan output looks like. All results are generated locally — no network packets are sent, no real hosts are contacted.
This tool is ideal for students, developers, and IT learners who want to understand port scanning concepts in a safe, controlled environment without needing command-line tools like Nmap.
How to Use the Network Scanner Simulator
Running a simulated scan involves these steps:
- Enter a target IP address or hostname (e.g., 192.168.1.1 or example.com) in the Target field.
- Select the port range to scan — Common Ports, Extended, or Custom range.
- Choose a scan type: TCP Connect, SYN Scan, or UDP Scan.
- Click "Start Scan" to run the simulation. The tool generates realistic port status results.
- Review the table of port numbers, service names, and Open/Closed/Filtered status in the results panel.
- Export the results as a text report if needed for documentation.
Key Features
- Port Status Simulation: Generates realistic Open, Closed, and Filtered results for common ports.
- Service Name Mapping: Shows the standard service name (HTTP, SSH, FTP, etc.) for each scanned port.
- Multiple Scan Types: Demonstrates TCP Connect, SYN, and UDP scanning methodologies.
- Zero Network Activity: Completely simulated — no actual network requests are made to any host.
Common Use Cases
This tool is helpful for the following tasks:
- Cybersecurity Education: Learning how port scanning works as part of ethical hacking or CompTIA Security+ studies.
- Network Administration Training: Understanding which ports are commonly open on routers, servers, and firewalls.
- CTF Practice: Preparing for Capture the Flag challenges by familiarizing yourself with port scan output formats.
Frequently Asked Questions
Does this tool actually scan real networks?
No. This is a purely local simulation. No network packets are sent. All results are generated by the browser's JavaScript engine for educational purposes.
Is port scanning legal?
Port scanning systems you do not own or have explicit permission to test may be illegal in many jurisdictions. This simulator helps you learn the concept without any legal risk.
What are the most common ports to know?
Port 80 (HTTP), 443 (HTTPS), 22 (SSH), 21 (FTP), 25 (SMTP), 3306 (MySQL), and 3389 (RDP) are among the most commonly scanned ports in security assessments.
Can I export the scan results?
Yes. The tool includes an export button that saves the scan results as a plain text report for documentation or study notes.
Privacy & Data Note
This tool is fully local. No IP addresses, hostnames, or scan results are transmitted to any server. All simulation logic runs in your browser's JavaScript engine with zero external network contact.
Frequently Asked Questions
No. This is a purely local simulation. No network packets are sent and no real hosts are contacted. All results are generated by the browser's JavaScript engine for educational purposes only.
Scanning systems you don't own or have explicit permission to test may be illegal in many jurisdictions. This simulator lets you learn port scanning concepts without any legal risk.
Key ports include: 80 (HTTP), 443 (HTTPS), 22 (SSH), 21 (FTP), 25 (SMTP), 3306 (MySQL), and 3389 (RDP). These appear in most security assessments and certification exams.
🔒 Educational Simulator Only. No real network contact. Zero data transmitted. Last updated: April 10, 2026.