How can you do ping sweep on your virtual network? Give command(s). How many hosts are up? Show using nmap screenshot. (Hint: it is not TCP full connect scan). 2) Equipped with previous step, put the live host ip addresses in a file and use the file to probe using nmap. Which ports are open and which services are running? Give commands. Show using nmap screenshot. 3) Find out the versions of services these are running and find out the operating systems. Show using nmap screenshot. 4) Can you create an executable script that will use nmap scans at varying intervals to scan 10 well known ports and print the status of the ports in easy readable manner? Show the script code and show the results using screenshot. 5) Can you think of any defense mechanism against the nmap probes using iptables firewall? Explain your defense mechanism clearly. Show evidence by implementing it. 6) Using iptables firewall, can you design a mechanism so that even if a port is open, the attacker probing the port with stealth scanning will get the impression of the port is closed?