Author: jason.soto

Port Knocking is a technique used to secure connections or port access from unwanted users. Using this technique we maintain one or more previously configured ports closed and these will only be opened using a sequence of requests to a number of ports that wepreviouslyset . To give an example , if we configure port Knocking access to port 50, this port will only be open when we make requests to the ports 1000,2500,3000 in that order , doing so, once we complete the sequence correctly the firewall will open the port that was previously closed.With this we add another…

MariaDB has more features and advantages over MySQL server described here. If you are thinking to switch to MariaDB, this article will help you. Today I am going to show you how to replace MySQL with MariaDB with all you existing Data in Linux CentOS. To do This we are going to follow these steps as root. Step 1: Backup Existing Databases Firstly take a backup of all existing databases, In case we need to restore it. # mysqldump -u root -p –all-databases > BackupDBS.sql Step 2: Remove MySQL After confirming that you have all databases backup, Lets remove MySQL…

Web application security is of paramount importance to ensure the safety of users’ data and prevent unauthorized access. ModSecurity is a widely used open-source web application firewall that can be used to secure web applications hosted on an Apache web server. In addition to its default set of rules, ModSecurity can be enhanced by installing additional rules to provide protection against specific threats. In this tutorial, we will walk you through the process of installing ModSecurity rules for Apache on CentOS and RHEL to improve the security of your web applications. Step 1: Install ModSecurity The first step in installing…

If we are working as a System Administrator, Security or System auditor, our responsibilities include tasks like: Security patch installation for OS or Applications, malware scanning, File integrity checks, Security audit, configuration error checks and more. If there is a tool capable of looking for these vulnerabilities automatically it could help us a lot and we can assure we are doing our best to keep the system secure. One of this tools is Lynis. This tool is supported by multiple platforms including Linux CentOS, Debian, Fedora, FreeBSD, MacOS, Ubuntu and much more. This tool will audit the system in multiple…