#red hat server

Webmin is a free and open-source control panel for administering Unix/Linux servers. This tutorial will be showing you how to install Webmin on CentOS 8/RHEL 8 server. Webmin provides users with a graphical web-based user interface to configure common system tasks and settings. If you don’t like the idea of using the command line to…

This tutorial will show you how to set up SSH two-factor authentication on CentOS/RHEL server using the well-known Google Authenticator. It will greatly improve the security of SSH service on your CentOS/RHEL server. How Two-Factor Authentication Works Usually you only need to enter a password or use SSH key to log in to your remote…

This tutorial explains how to set up SSH public key authentication on a CentOS/RHEL desktop. There’re basically two ways of authenticating user login with OpenSSH server: password authentication and public key authentication. The latter is also known as passwordless SSH login because you don’t need to enter your password. Step 1: Generate SSH Public/Private Key…

In this tutorial, we’re going to learn how to install and configure a samba server on CentOS 8/RHEL8 to share files on the local network. Samba is a free and open-source SMB/CIFS protocol implementation for Unix and Linux that allows for file and print sharing between Linux, Windows and macOS machines in a local area…

Previously I showed you how to set up SPF and DKIM on CentOS/RHEL mail server. Two common pieces of software that can do DKIM signing and verification on Linux are OpenDKIM and Amavis. In that tutorial I used Amavis, because at the time OpenDKIM isn’t included in any CentOS 8/RHEL 8 repository. As of now,…

Roundcube is a free and open source webmail client written in PHP. A webmail is a mail client in your browser, which means instead of reading and sending emails from a desktop mail client like Mozilla Thunderbird, you can access your email from a web browser. Roundcube functionality includes MIME support, address book, folder management,…

This tutorial is going to show you how to install CentOS 8 on a VPS (virtual private server) in VNC mode. This is useful when your hosting provider doesn’t offer CentOS 8 in one-click install, or you want to customize the installation, such as encrypting the disk. VNC (Virtual Network Computing) allows you to manage…

This tutorial is going to show you how to run your own VPN server by installing OpenConnect VPN server on CentOS 8/RHEL 8. OpenConnect VPN server, aka ocserv, is an open-source implementation of the Cisco AnyConnnect VPN protocol, which is widely-used in businesses and universities. AnyConnect is a SSL-based VPN protocol that allows individual users…