Cade ran a scan on a system and could not identify the operating system. There does seem to be a webserver running though. How can that fact help Cade figure out the rest of the system?
A) Telnet to the open port an grab a banner
B) Use a browser to view the web page
C) Use an FTP client to connect to port 80 and observe the error messages
D) View the source code of the index.html page

Question

Quizplus · Accepted Answer

Banner grabbing is a basic activity on a pentest. Each protocol requires different commands, therefore this is also a good way to verify services on the open ports.

Cade Ran a Scan on a System and Could Not