showsmtpversion.nse

Overview是Linux,FreeBSD,UNIX,Windows下的网络扫描和嗅探工 具包,其基本功能有三个,一是探测一组主机是否在线 其次是扫描 主机端口,嗅探所提供的网络服务 还可以推断主机

id = "SMTP version"

description = "Simple script which queries and prints the version of an SMTP server."

author = "Diman Todorov <[e-mail]>"

license = "See nmaps COPYING for licence"

categories = {"demo"}

require "shortport"

portrule = shortport.port_or_service(25, "smtp")

action = function(host, port)
	
	local client = nmap.new_socket()

	client:connect(host.ip, port.number)
	
	local status, result = client:receive_lines(1);

	client:close()	

	if result ~= nil then
		result = string.gsub(result, "\n", "")
	end

	return result
end