The SSH service is one of the most targeted by hackers, especially when running on the well-known default port 22. If you wish, you can also choose an alternative firewall solution that offers enhanced features, such as CSF.
Allow access only for trusted IP addresses and open only the ports required by the services that run on the server. The default firewall on CentOS systems is firewalld, you can start and enable the service with the following commands: systemctl start firewalldįirewalld configuration is outside the scope of this article, but the commands are simple and intuitive. A FREE video tutorial is also available on youtube and you can watch it at any time by click on the “VIEW YOUTUBE TUTORIAL” button below.Configuring the firewall is usually the first security task on a fresh installation, in order to allow traffic only for specific services and ports. This tutorial is a simple guide that will show you how to fix this error message so you can install CENTOS 8 successfully. However we have noticed that many CENTOS 8 users on the web have complained about the “ERROR SETTING UP BASE REPOSITORY” error message that happends when you get to the “INSTALLATION SUMMARY” stage of the CENTOS 8 installer. When installing a well maintained operating system such as CENTOS 8 you do not expect to face any challenges especially if the installation is being done on a standard desktop computer, server or virtual machine. With CENTOS 8 you can use it without having to purchase a license key and comes with no monthly software or support fees. It is an open source operating system that can be downloaded for free! and can be installed on almost any desktop or server environment. The CentOS Linux distribution is a stable, predictable, manageable and reproducible platform derived from the sources of Red Hat Enterprise Linux (RHEL).
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