Tag: Enable

Introduction

Just as regular visitors reach our server every day, so do others with more nefarious intentions. It is simply not reasonable to run an online service without some layer of protection. To protect against some of these attacks, Ubuntu ships with ufw (Uncomplicated Firewall). This is a tool designed to make Ubuntu firewall management as easy and user-friendly as possible. Specifically, ufw provides a cleaner interface for the core firewall tools netfilter and iptables, which, while robust, can be challenging to master.

What is Systemctl? 

The systemctl command is a utility which is responsible for examining and controlling the systemd system and service manager. It is a collection of system management libraries, utilities and daemons which function as a successor to the System V init daemon. The new systemctl commands have proven quite useful in managing a servers services. It provides detailed information about specific systemd services, and others that have server-wide utilization.

This guide will walk you through the steps for setting up a firewall using iptables in an Ubuntu VPS server. We’ll show you some common commands for manipulating the firewall, and teach you how to create your own rules.

With the recent release of cPanel & WHM version 58 there has been the addition of an AutoSSL feature, this tool can be used to automatically provide Domain Validated SSL’s for domains on your WHM & cPanel servers.

Basic Firewall Rules

In a firewall rule, the action component decides if it will permit or block traffic. It has an action on match feature. For example, if the traffic matches the components of a rule, then it will be permitted to connect to the network. It is essential to consider the potential security risks when modifying a firewall rule to avoid future issues. Following best practices for configuring firewalls can help you maximize the effectiveness of your solution.

Systemd is the System Management Daemon, which provides a standard for controlling the Linux boot process. It is named per the UNIX convention of adding ‘d’ to the end of daemon’s name. Systemd is intended as a drop-in replacement for the very common init start-up scripts for the boot process (which is also referred to as System V or SysV).