You are having problems while retrieving results after performing port scanning during internal testing. You verify that there are no security devices between you and the target system. When both…

You are having problems while retrieving results after performing port scanning during internal testing. You verify that there are no security devices between you and the target system. When both stealth and connect scanning do not work, you decide to perform a NULL scan with NMAP. The first few systems scanned shows all ports open. Which one of the following statements is probably true?