If you are still using Ubuntu version 16.04, you may want to consider updating to the latest Long Term Support release, version 18.04. In this post, we will cover what a Long Term Support release is and why you would want to use it. You will also learn the significant changes between 16.04 and 18.04. Last, but not least, you will also learn how to upgrade your dedicated server from Ubuntu 16.04 to Ubuntu 18.04.Continue reading “How to Upgrade Ubuntu 16.04 to Ubuntu 18.04”
A virtual machine is a simulated computer system which runs on a physical computer. In other words, a virtual machine is a computer inside a computer. Virtual machines allocate memory, a virtual CPU, disk storage space, and a network interface. This means that we can have a Windows computer that runs multiple virtual machines composed of Ubuntu Linux, macOS, Windows 10, Solaris, and CentOS, and they will all be completely separate from our parent Windows operating system.Continue reading “What is a Virtual Machine? A Tutorial”
A Fast, Modern and Secure VPN Tunnel
In this tutorial we will learn what Wireguard is, what it is used for, how to install and configure it, and lastly, how to use it to it wisely.
What is Wireguard?
Wireguard is an open-source, dependable, advanced, VPN tunneling software you can install and use right now to create a secure, point-to-point connection to a server.Continue reading “How to Install Wireguard on Ubuntu 18”
In this tutorial, we will learn how to install the latest kernel version on multiple Linux distributions.
What Is A Kernel
First, let’s define what a kernel is defined as. The Linux kernel is basically the brain of your hardware. Its main purpose is to facilitate communications between your hardware and software. As an example, if an application needs to make a change (say switching the screen resolution of your monitor), the software submits a request to the kernel, and the kernel uses the available video driver options to modify the resolution.Continue reading “How To Install The Latest Kernel Version”
What Is A Kernel?
The kernel is a piece of software that is at the core of an operating system. It usually has complete control over all of the server systems. It is normally the first program loaded after the bootloader has completed its tasks. The kernel then handles the rest of the start-up tasks as well as i/o requests from the system’s software. It then translates those requests into hardware instructions for the CPU (central processing unit).Continue reading “How to Simplify Working With Kernels”
In this article, we will learn how to switch a Linux firewall from IPtables to nftables on Ubuntu. IPtables, which is based on the Linux kernel Netfilter module, is currently the default firewall for many Linux distributions. It protects against multiple threat vectors and allows your server to block unwanted traffic based on a specific ruleset.Continue reading “How To Install nftables In Ubuntu”
Reading Time: 2 minutesIn this article and related video, we will be discussing how to check the kernel version in both Ubuntu and CentOS Linux. The following command works with all Linux distributions, such as Red Hat, CentOS, Debian, and Ubuntu. It also works on other UNIX-like operating systems such as HPUX, FreeBSD, OpenBSD, Solaris, etc. Use the following command to check which kernel version your server is currently running:
Continue reading “How To Check the Kernel Version in Linux / Ubuntu / CentOS”
Reading Time: 6 minutesOur last article on Ubuntu security suggestions touched on the importance of passwords, user roles, console security, and firewalls. We continue with our last article and while the recommendations below are not unique to Ubuntu specifically (nearly all discussed are considered best practice for any Linux VPS server or dedicated server) but they should be an important consideration in securing your server. Continue reading “How Do I Secure My Linux Server?”
Reading Time: 2 minutesOne of the most important things you can do to ensure the security and stability of your Linux dedicated server is to keep the kernel updated. Some Kernel updates patch security vulnerabilities and other issues. Kernel patches are released as issues are discovered.
Reading Time: 2 minutesThe concept of ‘Kernel hotpatching’, sometimes called live patching, was introduced to the Linux community around 2008. Soon after groups began developing differing implementations of the concept. KernelCare, one of the more popular implementations, was originally released in March 2014 by Cloud Linux, Inc. Continue reading “What Is KernelCare?”