Audit question

deep_logic

Hi all, 
I'm going to take the Sec+ exam next month...I swear this time. I'm going thru my second exam and a question that veteran security folks might know the answer to. 

Q. A security administrator is performing an audit of a

server farm, and has obtained this information:

Server: cloudflare-nginx

Date: Mon, 19 May 2014 16:53:57 GMT

Content-Type: text/html; charset=UTF-8

Connection: close

Set-Cookie: __cfduid=d0437368; expires=23:50:00 GMT;

Cache-Control: max-age=15

Expires: Mon, 19 May 2014 16:54:12 GMT

CF-RAY: 12d1d045a3880a12-ATL

Which of these would describe this output?

❍❍ A. Password cracking

❍❍ B. Results of the nbtstat command

❍❍ C. Banner grabbing

❍❍ D. Exploit log

I got the answer, Banner grab. But, how does one get a log like this? Is this OS dependent? Or are Security Admins using proprietary software?

Thanks for any help

cyberguypr

Here's a concise explanation with examples: https://securitytrails.com/blog/banner-grabbing

deep_logic

@cyberguypr many thx!