test1.py

#!/usr/bin/env python

import optparse
from socket import *
from threading import *

screenLock = Semaphore(value=1)
def connScan(tgtHost, tgtPort):
	try:
		connSkt = socket(AF_INET, SOCK_STREAM)
		connSkt.connect((tgtHost, tgtPort))
		connSkt.send('HELO\r\n')
		results = connSkt.recv(100)
		screenLock.acquire()
		print '[+]&d/tcp open' % tgtPort
		print '[+] ' + str(results)
	except:
		screenLock.acquire()
		print '[-]%d/tcp closed' % tgtPort
	finally:
		screenLock.release()
		connSkt.close()

def portScan(tgtHost, tgtPorts):
	try:
		tgtIP = gethostbyname(tgtHost)
	except:
		print "[-] Cannot resolve '%s': Unknown host" %tgtHost
		return
	try:
		tgtName = gethostbyaddr(tgtIP)
		print '\n[+] Scan Results for: ' + tgtName[0]
	except:
		print '\n[+] Scan Results for: ' + tgtIP
	setdefaulttimeout(1)
	for tgtPort in tgtPorts:
		t = Thread(target=connScan, args=(tgtHost, int(tgtPort)))
		t.start()
def main():
	parser = optparse.OptionParser('usage test1.py -H <target host> -p <target port>')
	parser.add_option('-H', dest='targetHost', type='string', help='specify target host')
	parser.add_option('-p', dest='targetPort', type='string', help='specify target port[s] separated by comma')
	(options, args) = parser.parse_args()
	targetHost = options.targetHost
	targetPorts = str(options.targetPort).split(',')
	if (targetHost == None) | (targetPorts[0] == None):
		print parser.usage
		exit(0)
	try:
		portScan(targetHost, targetPorts)
	except KeyboardInterrupt:
		print '\nUser Cancelled'
		exit(0)

if __name__ == '__main__':
	main()