File banner
Download: http://nmap.org/svn/scripts/banner.nse
User Summary
A simple banner grabber which connects to an open TCP port and prints out anything sent by the listening service within five seconds.
The banner will be truncated to fit into a single line, but an extra line may be printed for every increase in the level of verbosity requested on the command line.
Example Usage
nmap -sV --script=banner <target>
Script Output
21/tcp open ftp |_ banner: 220 FTP version 1.0\x0D\x0A
Requires
Author: jah
License: Same as Nmap--See http://nmap.org/book/man-legal.html