Jack Wallen

Learn how to obfuscate SSH login with port knocking.

With CentOS 8 out, the installation of Kubernetes has changed. Learn how to make this happen.

Learn how to install a LAMP stack on Ubuntu Server 19.10.

The default package manager for CentOS 8 has migrated from yum to dnf. Find out how this tool is used.

Learn how to quickly set a Linux hostname without having to reboot the server.

Android 10 includes a mode that lives somewhere between the default theme and dark mode. Find out how to enable the grayscale option.

Help your Android home screen help you with even more At A Glance information displayed.

Empower your Gmail searches to make it easier to find the needle in the proverbial haystack.

Find out how to work some SSH magic, by transferring a file from one machine to another from a third.

Locating and blocking unwanted open ports in Linux should be a task every network admin knows how to do.

Is it possible to configure SSH to listen for connections on both internal and external interfaces, using different ports? Jack Wallen says “yes.”

If you’d prefer the latest version of docker-ce (as well as a functioning upgrade), use this method of installation on CentOS 8.