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 second in a series dedicated to one of my favorite subjects: troubleshooting. Because my column is generally aimed more at tips and tricks and less on philosophy and design, I'm not ...

Troubleshooting anything comes with its own set of challenges, and in the case of Linux and Unix, it’s helpful to have a practical guide to the tools available to make the job easier. This is such a ...

10 ways to check ports in Linux to help troubleshoot systems Your email has been sent System and network troubleshooting often involves checking and obtaining information about ports to ensure ...

If network troubleshooting leads you to believe there's an issue with IPv6, you may need to shut down that protocol on your Linux machines. IPv6 offers a much larger addressing scheme than IPv4, which ...