How to Install and Configure Uncomplicated Firewall on Ubuntu 20.04

Posted on by Isaac Noboa | Updated:
Category: Tutorials | Tags: , , , , , , , , , , , , , , , , , , , , , ,
Reading Time: 7 minutes

Introduction

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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.

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What is Systemctl? An In-Depth Overview

Posted on by Dane Kevin | Updated:
Category: Tutorials | Tags: , , , , , , , , , , , , , , , , , , , , , , , , , ,
Reading Time: 8 minutes
systemctl.073020

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.

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How to Set Up A Firewall Using Iptables on Ubuntu 16.04

Posted on by Noti Peppas | Updated:
Category: Getting Started | Tags: , , , , , , , , , ,
Reading Time: 5 minutesThis 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. Continue reading “How to Set Up A Firewall Using Iptables on Ubuntu 16.04” →

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Enabling Let’s Encrypt for AutoSSL on WHM based Servers

Posted on by Helpful Humans of Liquid Web | Updated:
Category: Tutorials | Tags: , , , , , ,
Reading Time: 2 minutesWith 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. Initially this feature was released with support provided for only cPanel (powered by Comodo) based SSL certificates, with the plans to support more providers as things progressed. As of now, cPanel & WHM servers running version 58.0.17, and above, can now also use Let’s Encrypt as an SSL provider. Continue reading “Enabling Let’s Encrypt for AutoSSL on WHM based Servers” →

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Best Practices for Firewall Rules

Posted on by David Richards | Updated:
Category: Getting Started | Tags: , , , , , , , , , ,
Reading Time: 4 minutes

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.

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Managing a Linux Server with Systemd

Posted on by J. Mays | Updated:
Category: Technical Support | Tags: , , , , , , , ,
Reading Time: 2 minutes
What is systemd?
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). Though there is some debate regarding the benefits of systemd, the advantages do include: Service Reporting (failed? suspended? error?), Process Monitoring (kills user processes at logout), and Parallel Processes (multiple services are able to start at same time, improving boot times). Continue reading “Managing a Linux Server with Systemd” →

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