In a nutshell
The core of the Linux firewall is the netfilter kernel module. To add or remove firewall rules you need the "iptables" application (should already be installed).  where is the  [ ... ]

This article describes how to set up a very simple Windows share on Linux (Fedora). 1. Install samba (you have to run this commands with root privileges)  [root@blackmod ~]# yum install sam [ ... ]