Disable Firewall

To disable the system firewall,

  1. systemctl stop firewalld.service
  2. systemctl disable firewalld.service

Conversely, to enable the system firewall,

  1. systemctl enable firewalld.service
  2. systemctl start firewalld.service

 

Disable SELinux

SELinux is a security extension for the linux operating system. With it, you can provide a more robust security policy allowing for granular access to system resources.

Here, I will show you how to disable this wonderful feature, which, i bet, is done by most linux admins, for better or worse.

  1. Logon to your system as root.
  2. edit the /etc/selinux/config file
  3. Replace the line, SELINUX=enforcing with SELINUX=disabled
  4. Save the file
  5. Reboot