Who’s that knocking on my door?



You’re managing a web server, and you are interested in knowing what devices might be connecting to your server right now. What network utility would be the best choice to give you this information?

A) nslookup

B) ipconfig

C) tracert

D) netstat

E) If you listen closely, you can hear the data flowing through the wire


The answer: D) netstat

The netstat command can provide you with many details about network communication, open ports, and connected clients.

Want to know more? Watch “Network Troubleshooting Tools.”

There are many network troubleshooting tools available at the command line. In this video, you’ll learn how to use tools such as ping, tracert, nslookup, netstat, and many others.