![]() Two-factor authentication (2FA) greatly improves the security of user access by requiring a password and second token before users can log on to the server. Alternatively, you can assign these permissions to an existing user in order to ensure a secure server login. The process of disabling the root account varies depending upon which distribution of Linux you are using – you must first create a new user account and assign elevated (sudo) permissions, so that you will still have a way of installing packages and performing other admin actions on the server. To strengthen your server security, you must disable this login. Keeping root login enabled can present a security risk and diminish the safety of small business cloud resources hosted on the server, as hackers can exploit this credential to access the server. Linux distributions include a superuser called ‘root’ that contains elevated administrative permissions. Keep installed packages to a reasonable minimum and periodically eliminate what isn’t needed. However, the more packages you install, particularly from third-party repositories, the more vulnerabilities you could be introducing into the system. Packages can be drawn from official repositories or by adding PPAs (Personal Package Archives), repositories created by Linux users, to gain access to a wider selection of programs. You can also add further packages through the default package management system. During installation, users can opt to install additional packages, including an Open SSH server, a DNS server, a LAMP stack, and a print server. Linux server distributions come with a variety of common packages already installed, such as adduser and base-passwd. You should only install the packages that your business needs to run in order to protect the functionality of your server. Whether your Linux server is running Ubuntu, Debian, or some other distribution, follow these steps to strengthen your Linux server’s default configuration. ![]() ![]() However, you must still adopt best practices to keep your servers running safely and effectively. Linux security is considered good, based on the operating system’s strong default permissions structure. ![]() It is a key requirement for most system administrators and cybersecurity teams. Server security describes the software, tools, and processes used to protect a business’ server from unauthorized access and other cyberthreats. Learn how to secure your Linux server and protect data from hackers ![]()
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