Kernel-based Virtual Machine (KVM) is an open source virtualization technology built into Linux®. Specifically, KVM lets you turn Linux into a hypervisor that allows a host machine to run multiple, isolated virtual environments called guests or virtual machines (VMs).
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Root user is the one that have the license to do anything in your system. What if some one got access to the root user account?! Lets disable direct root login by following the below steps.
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/etc/passwd file stores essential information, which required during login. In other words, it stores user account information. The /etc/passwd is a plain text file. It contains a list of the system’s accounts, giving for each account some useful information like user ID, group ID, home directory, shell, and more
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FTP is always the favourite back-door of hacker and there are a million ways to hack an FTP account. May be you are not that familiar with SSH and disabling FTP may put you in trouble. I have an alternative option. If you are some one that want the simplicity of FTP with the security features of SSH, you can use SFTP. It is not a big deal. Any users that have SSH access to your system can use SFTP.
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By default, client/user/browser see information about your PHP and web server version. If you forgot to update your PHP version, an attacker can use version information to attack or find vulnerabilities in your PHP version., it is not good to expose your PHP information to the public.
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Virtuozzo is a bare-metal virtualization solution that includes container virtualization, KVM-based virtual machines, software-defined storage along with enterprise features and production support. It runs on top of Virtuozzo Linux, a RHEL-based Linux distribution.
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