Back to the Basics #7: OS Security

The security of your operating system can be very complex. It is a large collection of software that has direct access to your hardware. Therefore, it is crucial to maintain an ongoing security policy for protecting your server’s OS.
The following items should be at the top of your server OS security list:

Kernel updates – The […]

Unix Server Permission Safety

Unix and Unix-like servers share a common permissions-based system for users and files.  This allows the system administrator (root) to determine which users are allowed access to specified files and what type of access they get.  Whether your server is running FreeBSD, Debian, Red Hat Enterprise Linux, Solaris, Mac OS X or any other Unix-like […]

Understanding Linux File Ownership

When configuring your dedicated server’s file permissions, it is important not to overlook file ownership. In Linux and other Unix-like operating systems, every file is assigned an owner, and that owner belongs to a group. A file can have generally liberal permissions but only for a particular user or group. Similarly, a […]

Understanding Linux User Permissions

On dedicated servers running Linux or Unix-like operating systems, the default user account has limited permissions. This is a security measure that prevents an average user from wreaking havoc on an otherwise properly functioning server.
In order to perform administrative tasks, a user needs to login as root. On most servers, it is common […]