Detect Rogue IPs from Your Netstat Output

Published: June 16, 2025

Have you ever wondered which IPs your Windows machine is silently talking to? This lightweight web tool helps you identify connections to unknown or potentially rogue IP addresses by analyzing the output of your netstat command.

Using Microsoft’s official list of service IPs, the app can distinguish between trusted system connections and unexpected or suspicious ones — all in your browser.

📌 How to Use

1. Open Command Prompt on Windows
2. Run: netstat -ano > netstat.txt
3. Upload that netstat.txt file here
4. Review results: ✅ legit vs 🚨 rogue IPs

Everything runs in your browser — nothing is uploaded or shared. Stay safe, stay aware. 🛡️

🎯 Why This Matters

Every time your system communicates with the internet, there's potential for good or bad actors to be involved. While most connections are legitimate (Windows Update, browser traffic, cloud sync), some might be unexpected — or even malicious.

This tool helps you quickly spot external IPs that aren't part of known Microsoft infrastructure. It puts awareness and control back in your hands, especially if you're running unknown apps, cracked software, or connecting over insecure networks.

🛠️ Use Cases

• 👨‍💻 Developers verifying clean environments
• 🏫 Students learning about networking and system internals
• 🔒 Security-conscious users reviewing unknown connections
• 🧪 Pentesters doing fast reconnaissance without deep packet inspection

⚠️ What Happens If You're Careless

Ignoring rogue IP connections may leave your system vulnerable to:

• 📥 Data exfiltration (your sensitive data being silently sent to unknown servers)
• 🔗 Persistent remote access (backdoors using ports you don’t monitor)
• 🎯 Targeted malware using legitimate-looking channels
• 🧱 Firewall or antivirus getting bypassed by stealth traffic

While this tool doesn't replace a full security suite, it's a powerful, lightweight step toward digital hygiene and visibility.