In this lab, you will learn the basics of networking by using your '''Virtual Machines'''. You will first set up a '''virtual private network (VPN)''' among those machines. In addition, you will learn to set up '''network names''' (to associate with server's IP Addresses), '''associate network services with port numbers''' for troubleshooting purposes, and use shell scripts with arrays to store network configuration data, and setup '''firewall policies''' via the '''iptables''' command.