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).

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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.

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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. 

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“Password is Forbidden” PhpMyAdmin Login Error Solved

Reading Time: 2 minutes

Once in a while, perhaps on a Development server, MySQL will not be set up with a root password. The aforementioned configuration is generally thought of as against best practices, however, if it is what you’re dealing with, then it could also interfere with PhpMyAdmin.

This error relates to logging into phpMyAdmin, an open source tool used for the administration of MySQL.

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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.

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How to Set Up and Manage Sudo Permissions

Reading Time: 7 minutes

What Is Sudo?

sudo-sudoers

credit to: XKCD

Sudo is a Linux program meant to allow a user to use root privileges for a limited timeframe to users and log root activity.  The basic thought is to give as few privileges as possible to a user while allowing  the user to accomplish a task. The term “Sudo” means substitute user, and do. It is a program used for managing of user permission based on a system configuration file. It allows users to run programs with the privileges of another user, by default, the superuser. The program is supplied for most UNIX and Linux-based operating systems.

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How To Add a User and Grant Root Privileges on Ubuntu 18.04

Reading Time: 2 minutes

Adding a user and granting that user root privileges is one of the many tasks of a system admin.  Once a user has been added and granted root privileges they’ll be able to login to your Ubuntu VPS and perform vital functions for the upkeep of the system. Afterward, they’ll be able to use sudo before commands to perform elevated tasks.  In this quick tutorial, we’ll show you how to add a new user and grant root permissions.

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How to Add a User and Grant Root Privileges on Ubuntu 16.04

Reading Time: 2 minutes

Ubuntu 16.04 LTS provides you the ability to add a user for anyone who plans on accessing your server.  Creating a user is a basic setup but an important and critical one for your server security. In this tutorial, we will create a user and grant administrative access, known as root, to your trusted user.

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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.

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