Category: Tutorials
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What are the Five Criteria Of a Cloud Platform?
Cloud computing is a model for empowering users to access a useful, network-accessible, shared pool of resources that allows for quick changes to settings and configurations with minimal intervention from a service provider in an easy-to-maneuver self-service management interface.
Intrusion Detection Systems: Behind the Firewall
What is an Intrusion Detection System?
An intrusion detection system (or IDS) is a hardware device or software program that observers a network or system for security policy violations or malicious activity. Typically, any activity or intrusion violation is reported to either an administrator or is collected and logged in a central location using a security information and event management system (or SIEM) system. This system is a security-based technology developed initially for detecting exploits and vulnerabilities used against a computer or other target applications.
How to Troubleshoot SMTP Errors: Part 2
In part one of How to Troubleshoot SMTP Errors, we reviewed email status codes, internal reasons for email issues, and troubleshooting steps to address those issues. In part two of this series, we will examine some of the external reasons for email issues.
How to Troubleshoot SMTP Errors: Part 1
What is SMTP?
The Simple Mail Transfer Protocol (SMTP) is a communication protocol used to transmit email between corresponding email servers. Using an email client like Mac Mail, Outlook, Thunderbird, or web clients like Gmail or Windows Live, SMTP can send messages to an email server. Although SMTP was initially designed as an email transport and delivery system, it later encompassed the email submission protocols that are now in use by both the Post Office Protocol (POP) and the Internet Message Access Protocol (IMAP). The above-noted email clients use these protocols to retrieve email from an email server. When this system fails, it provides the means to identify and resolve SMTP errors.
How to Install ESXi in VMware
Introduction
In this tutorial, we will learn how to install and configure VMware ESXi. The majority of VMware cloud product installations are targeting experienced Linux or Windows administrators. However, we will try to simplify the process as much as possible. If you are new to hypervisors like ESXi or VMware vSphere, this guide might be right for you! Let’s start by reviewing what ESXi is.
A pipe is a form of redirection in Linux used to connect the STDOUT of one command into the STDIN of a second command. It allows us to narrow the output of a string of commands until we have an easily digestible amount of data. The pipe character is the | symbol and is placed between any two commands. Pipes are one of the most used command-line features that Linux has. Every article showing Linux commands will almost inevitably include pipes.
What is a Time Series Database?
Introduction
We might be unaware of this fact, but we use time series databases all the time. They will become even more relevant as the Internet of Things (IoT) and other revolutionary technologies continue to develop. In this article, we will review what a time series database is, what its purpose, and their impact on our daily lives.
How to Install and Configure the Rust Programming Language
What is Rust?
The Rust programming language is an open-source language used for systems that emphasize parallelism, speed, and memory safety. Mozilla developed it in 2010 and saw its initial 1.0 release in 2015.
Is GPG Still Useful In Today’s Insecure World?
Introduction - WPSiteSync
In this article, we will be exploring GnuPG or GPG as it is more commonly known. We will discuss if this software platform is still needed, if it will still be useful in the future, and how to install and utilize it.
How to Stop Outgoing Email Spam
Introduction
The most effective method to protect a server from sending spam is to prevent it in the first place. In this article, we provide several techniques to use to keep the server from sending out unwanted spam or junk mail. Typically, unwanted, and unsolicited spam email is usually bulk sent out to an indiscriminate list of recipients. Spam is often used for commercial purposes but can be sent out in massive volume by a botnet or a network of infected computers.
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