portscan2.py

#! /usr/bin/env python

import optparse
from socket import *
def connScan(tgtHost, tgtPort):
    try:
        connSkt = socket(AF_INET, SOCK_STREAM)
        connSkt.connect((tgtHost, tgtPort))
        print '[+]%d/tcp open'% tgtPort
        connSkt.close()
    except:
        print '[-]%d/tcp closed'% tgtPort
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:
        print 'Scanning port ' + tgtPort
        connScan(tgtHost, int(tgtPort))