How to Locate Open Ports in Linux

Reading Time: 9 minutes
openports

What is a Port? 

First, let’s define what a port is. According to the IEFT, a port is: 

A logical entity for Internet communication. Ports serve two main purposes:
1. They provide a demultiplexing identifier to separate transport sessions between the same pair of endpoints
2. They may also identify the application protocol and associated service to which processes connect.

Wikipedia.com

In plain English, this simply means that a port is an endpoint through which data flows back and forth between two computers over a network. A computer has 65535 ports available to share information. These port numbers are based on a 16-bit number, which is where we derive the total number of available ports (0 to 65535).

Continue reading “How to Locate Open Ports in Linux”

How to Implement Zero Trust Security in 5 Steps

Reading Time: 6 minutes

What is Zero Trust Security?

Zero Trust security is the concept, methodology, and threat model that assumes no user, system, or service operating within a secured internal environment should be automatically trusted. It put forward that every interaction must be verified when trying to connect to a system before being granted access. This concept uses micro-segmentation, and granular edge controls based on user rights, application access levels, service usage, and relation to the location to determine whether to trust a user, machine, or application seeking to access a specific part of an organization.

Continue reading “How to Implement Zero Trust Security in 5 Steps”

How Was My Website Compromised? 

Reading Time: 7 minutes

In this tutorial, we will look at several methods that are used to compromise a website. In today’s world, websites use multiple procedures that represent the core functions of a modern business. Whether you have an eCommerce site or a business card site, a website is essential for driving business growth. We can safely state that a website is a unique image of your respective business. 

Continue reading “How Was My Website Compromised? “

How to Install and Configure OpenSSH on Windows Server 2019

Reading Time: 6 minutes

What is OpenSSH?

OpenSSH logo

OpenSSH is an open-source utility developed by The OpenBSD Project. SSH stands for “Secure SHell.” This service encrypts traffic on both ends, eliminating security risks from hackers or eavesdroppers. It can be used for remote operations like file transfers and offers key-based passwordless authentication. In this tutorial, we will demonstrate how to harness the power of SSH’s on your Windows server to send basic remote commands and transfer files using password authentication.

Continue reading “How to Install and Configure OpenSSH on Windows Server 2019”

Top 15 Server Security Practices for 2020

Reading Time: 16 minutes

In this article, we will denote the security best practices for 2020 and beyond. Because security is such a challenging subject for many, it often goes unheeded, and as such, many are caught unaware when an issue arises. By following these best practices, you can significantly lower your risk of being compromised by a malicious actor.

Continue reading “Top 15 Server Security Practices for 2020”

How to Set Up SSH Keys

Reading Time: 6 minutesThis tutorial describes the process of setting up SSH Keys for use when logging in to a remote server via SSH.
File Synchronization 101: The Basics
I. Using rsync to Transfer and Synchronize Local and Remote Systems II. How to Set up SSH Keys for Use with File Synchronization
  Continue reading “How to Set Up SSH Keys”

How Do I Secure My Linux Server?

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?”

How to Use Ansible

Reading Time: 8 minutesAnsible symbolAnsible is an easy to use automation software that can update a server, configure tasks, manage daily server functions and deploys jobs as needed on a schedule of your choosing. It is usually administered from a single location or control server and uses SSH to connect to the remote servers. Because it employs SSH to connect, it is very secure and, there is no software to install on the servers being managed. It can be run from your desktop, laptop or other platforms to assist with automating the tedious tasks which every server owner faces. Continue reading “How to Use Ansible”

Getting Started with Ubuntu 16.04 LTS

Reading Time: 5 minutesA few configuration changes are needed as part of the basic setup with a new Ubuntu 16.04 LTS server. This article will provide a comprehensive list of those basic configurations and help to improve the security and usability of your server while creating a solid foundation to build on. Continue reading “Getting Started with Ubuntu 16.04 LTS”