This document provides an overview and summary of key information about CentOS 7, including:
- CentOS is a Linux distribution derived from Red Hat Enterprise Linux (RHEL) and provides a free, community-supported version of RHEL.
- Details on how CentOS 7 is based on and compatible with RHEL 7 and supports common server configurations like LAMP stacks.
- Information on installing and deploying CentOS 7 virtually using tools like VirtualBox and Vagrant.
- An introduction to new technologies in CentOS 7 like the systemd init system.
This document provides information about Linux security using SSH, virtualization using VirtualBox and Vagrant, and SSH access. It includes:
- An overview of securing Linux systems using SSH and preventing root login over SSH.
- Instructions for installing and configuring VirtualBox and Vagrant to set up a CentOS virtual machine.
- Details on accessing the CentOS VM using SSH from the host computer.
- Tips for securing SSH further, such as changing the SSH port number.
The document provides concise steps and explanations for setting up a secure SSH environment for a Linux virtual machine using common virtualization and SSH tools.