How to Use nftables
nftablesreplaces the successful iptablesand its related frameworks built on Netfilter. With nftables come improvements to performance and usability, but also significant changes to syntax and usage.
How to Secure MySQL Server
MySQL MySQL is an open-source relational database management system. This guide will show you how to secure and audit a MySQL server.
Anti-Virus and Rootkit Protection with ClamAV and rkhunter
Anti-virus and Rootkit Detection This guide teaches you how to use ClamAV, ClamTK, and rkhunter for anti-virus and rootkit detection to secure your server.
Linode’s Cloud Firewall is a robust cloud-based firewall solution available at no additional charge for Linode customers.
How to Install SELinux on Debian 10
Ubuntu has a Mandatory Access Control (MAC) system similar to SELinux, named AppArmor. Both SELinux and AppArmor provide a set of tools to isolate applications from each other to protect the host system from being compromised.
How to Configure a Firewall with UFW
What is UFW? UFW, or uncomplicated firewall, is a frontend for managing firewall rules in Arch Linux, Debian, or Ubuntu.
How to Use Fail2ban to Secure Your Server (A Tutorial)
What is Fail2Ban Fail2ban is a log-parsing application that monitors system logs for symptoms of an automated attack on your Linode.
How to Set Up and Secure a Linode Compute Instance
After you have successfully created a Compute Instance, there are a few initial configuration steps you should perform within your new Linux system.
Creating an SSH Key Pair and Configuring Public Key Authentication
Password authentication is the default method most SSH (Secure Shell) clients use to authenticate with remote servers, but it suffers from potential security vulnerabilities like brute-force login attempts.
Controlling Network Traffic with iptables - A Tutorial
iptables is an application that allows users to configure specific rules that will be enforced by the kernel’s netfilter framework.
Modify File Permissions with chmod
Modify File Permissions with chmod The chmod command allows users to change read and write permissions in Unix systems.
Linux Users and Groups
If you are new to Linux/Unix, then the concept of permissions may be confusing. This guide provides you with an explanation of what permissions are, how they work, and how to manage them.