What do you conclude from the nmap results below?
Staring nmap V. 3.10ALPHA0 (www.insecure.org/map/)
(The 1592 ports scanned but not shown below are in state: closed)
PortStateService
21/tcpopenftp
25/tcpopensmtp
80/tcpopenhttp
443/tcpopenhttps
Remote operating system guess: Too many signatures match the reliability guess the OS. Nmap run completed 1 IP address (1 host up) scanned in 91.66 seconds
A.
The system is a Windows Domain Controller.
B.
The system is not firewalled.
C.
The system is not running Linux or Solaris.
D.
The system is not properly patched.
Explanation:
There is no reports of any ports being filtered.