Reading Time: 8 minutes
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.
Continue reading “How to Stop Outgoing Email Spam”
Reading Time: 4 minutes
What is ApacheTop?
ApacheTop is an uncomplicated command line (CLI) utility that is used to monitor http traffic in real-time. It achieves this task by analyzing the incoming apache logs and based on that data presents understandable output to our screen. It can be configured to output X number of hits, or output X number of hits within X seconds.
Continue reading “How to Install and Use ApacheTop”
Reading Time: 12 minutes
In this article, we will review the Nmap software program and multiple commands. Nmap is an open-source mainstream tool used by network administrators to scan ports and map networks. Nmap commands are primarily used to identify which ports certain software is running on our system. It is also used to discover available hosts and what services they are offering and detecting potential security risks. Using Nmap, you can check a single host or a complete network. In this tutorial, we will cover several basic as well as advanced Nmap commands in the “Pro Tips and Tricks” section of the article.
Continue reading “Using Nmap: Pro Tips and Tricks”
Reading Time: 4 minutes
Today, we will be reviewing how to configure Apache virtual hosts on a CentOS 7 VPS server or Dedicated server. If you host websites, chances are you are hosting more than one. If so, knowing how and why these virtual hosts work should allow you to better understand why they are needed. By default, Apache can host only one document root for all requests, which likely isn’t what you want to happen.
We can use VirtualHost blocks to translate named domains into their appropriate document roots, with new settings per-block as needed. But, what goes into a valid VirtualHost? Where should it be stored?
Continue reading “How to Configure Apache Virtual Hosts on CentOS 7”