Security

Setting file and directory permission properly is important in multi-user systems such as Linux. You can set permission recursively using the chmod or find command and grant privileges or restrict access in a single command.

This article is meant to assist readers in determining whether pfSense or Sophos would better fit their system's requirements. It contains a clear and brief overview of pfSense and Sophos' characteristics.

Learn when to use the su command and when to use the sudo command. While su is mostly used for account switching, sudo is utilized for executing commands that require root privileges. Find out more about SU vs. SUDO in this in-depth comparison.

This guide shows you how to secure your Nginx with Let’s Encrypt that generates SSL/TLS certificates for your domain. In addition, you will learn how to enabled Certbot to renew certificates automatically.

This article demonstrates 3 distinct methods used to port forward SSH connections. It examines the syntax of the individual commands and teaches you everything you need to know to implement SSH port forwarding successfully.

This article explains two methods of generating SSH keys on a Windows 10 system. One method uses the PuTTY tool, while the other uses the OpenSSH client utility.

This article deals with the most common causes of the "ssh_exchange_identification: read: Connection reset by peer" error. At the same time, we offer expert solutions for this error, such as managing Host-Based Access Control Lists, changing Intrusion prevention software settings, and editing the SSH daemon configuration file.

Install an SSL Certificate on NGINX to ensure a safe connection between your web server and browser. Encrypt transmitted data over the internet so that it is only visible to the intended recipient.

Once you install MariaDB, one of the first things you need to do is to create a new MariaDB user. This article explains how to create a MariaDB user, and then how to grant privileges to the newly created user.

Learn how to use iptables commands and see how iptables works. By following the instructions listed in this article, you'll get a better understanding of network packets, and can configure basic rules for your system and set up ports on the firewall to meet your security needs.