From containers and VPNs to VLANs and firewalls, Linux networking has become the backbone of modern home labs and servers. But no matter how advanced the setup, the same core commands keep showing up ...

The most important networking command in Linux might be ping. This command lets you check if a remote machine is responding to your requests. You can use ping to check if your internet connection is ...

Click for a PDF with this and four other essential Linux articles. And, if you’ve ever heard anyone say that for Unix, everything is a file, you might not be too surprised to learn that lsof works ...

Back when I worked in the Network Operations department at one of my previous jobs, we used to chuckle when a customer would call us reporting that “the Internet is down.” Now, I realize that there ...

This column is the third in a series dedicated to one of my favorite subjects: troubleshooting. Because my column generally is aimed more at tips and tricks and less on philosophy and design, I don't ...