You apply a filter: tcp.port == 443 (HTTPS traffic). You see your browser talking to Google. Safe. Then you see a rogue UDP stream from a downloaded screensaver app. You uninstall it immediately.
Start with Windows 11’s built-in tools. If you need evidence for later (e.g., "prove to my ISP that I'm not using 2TB a month"), install GlassWire. For security investigations, learn Wireshark. But never guess—monitor.
End of story.
It was a typical Tuesday. You’re trying to join a Zoom call, but your video is a pixelated mess. Your game pings spike to 300ms. You check your internet plan—1 Gigabit, plenty. The problem isn’t your provider. It’s your PC.
There it is. is chugging 15 Mbps. Windows is secretly uploading updates to other PCs on the internet (a feature called peer-to-peer updates). You right-click, end the task temporarily, and your Zoom clears up. monitor network traffic windows 11
Task Manager is great for catching obvious offenders, but it lacks history. What happened 10 minutes ago? It can’t tell you.
You want rules . You install NetBalancer. You set Chrome to "Limit to 5 Mbps download" and Steam to "Lowest priority." Your video call never stutters again, even while downloading a game. You apply a filter: tcp
You install GlassWire (free version). Within 2 minutes, you get a timeline graph of your last 24 hours of traffic. You see a massive blue spike at 3:00 AM—that’s your PC waking from sleep to download Windows updates.