Network Activity Monitor: Best Tools & Guide to Track Network Traffic (2025)

In today’s hyper-connected world, understanding what’s happening inside your network is more important than ever. A network activity monitor helps you view real-time traffic, identify unusual data transfers, and protect your systems from hidden threats.

Whether you manage a small home network or oversee enterprise infrastructure, knowing how to monitor your network activity gives you visibility and control over performance, bandwidth usage, and security. Tools that monitor network activity are essential for diagnosing slow connections, detecting malware, and ensuring your devices communicate efficiently.

What is a Network Activity Monitor?

A network activity monitor is a software or hardware tool designed to track the flow of data across your network. It displays how much data is being sent or received, which devices are connected, and which applications are consuming bandwidth.

By using a network monitoring tool, IT professionals and everyday users can identify suspicious traffic, locate bottlenecks, and maintain optimal network performance. These tools are often part of a wider network management system, helping you visualize all the connections between devices.

For example, in Windows 10 or Windows 11, you can view basic network activity using the built-in Task Manager or Resource Monitor, but advanced users often rely on third-party software like Wireshark, GlassWire, or SolarWinds Network Performance Monitor for deeper insights.

Why You Need a Network Activity Monitor

A network activity monitor is not just for IT professionals — it’s for anyone who values security and efficiency.

Here’s why it matters:

• Security Awareness: Detect unauthorized access, malware communication, or strange outgoing traffic.
• Bandwidth Management: Identify which applications or devices are consuming too much data.
• Troubleshooting: Fix slow internet or local network issues by spotting congestion or faulty connections.
• Performance Optimization: Ensure smooth operation for online gaming, streaming, and remote work.

For example, if your Wi-Fi feels slower than usual, a network monitor app can show if another device is downloading large files or if malware is secretly sending data.

Key Features to Look for in a Network Activity Monitor

When choosing a network activity monitoring tool, consider these important features:

1. Real-Time Monitoring – View live data usage per device or process.
2. Traffic Analysis – Understand what kind of data (e.g., HTTP, DNS, FTP) is flowing through your network.
3. Alerts & Notifications – Receive alerts when suspicious or excessive activity occurs.
4. Historical Reports – Review past network activity to identify recurring issues.
5. User-Friendly Interface – Easy navigation and clear data visualization.
6. Compatibility – Works with Windows, macOS, Linux, or mobile devices.

Some advanced tools also include packet inspection, firewall integration, and cloud-based dashboards for remote access.

Top Tools for Monitoring Network Activity

Here are some of the best network activity monitor tools you can use in 2025:

1. GlassWire

A beginner-friendly tool with visual graphs showing real-time bandwidth usage and alerts when new connections occur.

2. Wireshark

A powerful, open-source packet analyzer used by professionals to inspect data packets in detail.

3. SolarWinds Network Performance Monitor

Ideal for enterprise users — provides end-to-end monitoring, customizable alerts, and network performance tracking across large networks.

4. Paessler PRTG Network Monitor

An all-in-one monitoring system that covers traffic, devices, and bandwidth with a customizable dashboard.

5. Nagios Core

A free, open-source solution perfect for Linux environments, offering powerful alerting and network activity monitoring features.

External reference: Learn more about Wireshark or explore SolarWinds Network Performance Monitor for enterprise use.

How to Monitor Network Activity on Windows

If you’re a Windows user, you don’t need to install advanced tools right away. Here’s how to monitor network activity with built-in features:

1. Open Task Manager (Ctrl + Shift + Esc) → Go to Performance → Select Wi-Fi or Ethernet.
2. Use Resource Monitor: Type “Resource Monitor” in the Start menu → Open Network tab → See which apps are sending or receiving data.
3. Use Command Prompt: Run netstat -ano to see active connections and ports.

For deeper insights, tools like GlassWire or NetLimiter can visualize and control your bandwidth usage easily.

Read also: You can also read our guide on Top Networking Tools and Their Functions to learn about more utilities.)

Best Practices for Effective Network Monitoring

• Regularly check logs for unknown IP addresses or unauthorized connections.
• Schedule reports to identify trends in data usage.
• Use encrypted connections (VPN) to enhance privacy.
• Combine monitoring with security tools like firewalls and antivirus software.
• Always update your network tools to prevent vulnerabilities.

A network activity monitor isn’t just for troubleshooting — it’s a proactive shield that helps you maintain safety, reliability, and control over your network.

Final Thoughts

A network activity monitor is one of the most valuable tools in your digital toolkit. It empowers you to protect your data, manage your bandwidth, and ensure smooth connectivity. Whether you’re an IT admin, gamer, or everyday user, monitoring your network keeps you informed and secure.

Start with free tools like GlassWire or Wireshark, and upgrade to professional monitoring systems as your network grows. Stay aware, stay protected — and keep your digital world running smoothly.

Frequently Asked Questions (FAQs)