RHEL/CentOS 7: How to Apply SELinux Policies

Let's see how to apply your newly created SELinux policies. In order to apply a policy, we need a policy package file (pp). This can be obtained by parsing AVC denials to audit2allow or compiling...

RHEL/CentOS 7: Creating SELinux Policies

In some cases, you'll need to create a new SELinux policy—for instance, when installing a piece of software from source. Although I do not recommend installing software from source on enterprise systems,...

RHEL/CentOS 7: Configuring SELinux port definitions

SELinux also controls access to your TCP/IP ports. If your application is confined by SELinux, it will also deny access to your ports when starting up the application. Let's see how to...

RHEL/CentOS 7: Configuring Booleans in SELinux

SELinux booleans allow you to change the SELinux policy at runtime without the need to write additional policies. This allows you to change the policy without the need for recompilation, such...

RHEL/CentOS 7: How to Change File Contexts in SELinux

SELinux is a Linux kernel module that allows supporting mandatory access control (MAC) security policies. The Red Hat implementation of SELinux combines role-based access control (RBAC) with type enforcement (TE). Optionally,...

RHEL/CentOS 7: Configuring Boot Environment

GRUB2 is the default boot loader for RHEL 7. By default, it doesn't use any fancy configuration options, but it is wise to at least secure your grub boot loader. There are...

RHEL/CentOS 7 : Managing Time

RHEL 7 comes preinstalled with Chrony. While everybody knows Ntpd, Chrony is a newcomer to the game of timekeeping. Chrony is a set of programs that maintains the time on your computer...

RHEL/CentOS 7 : Configuring Logrotate

The logrotate tool allows you to rotate the logs that are generated by applications and scripts It keeps your log directories clutter-free and minimizes disk usage when correctly configured. The logrotate tool is...
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