Python port scanning simple program, python port scanning

Python port scanning simple program, python port scanning

This example shares the Python Port Scan implementation code for your reference. The details are as follows:

Obtain the IP address and port number of the local machine:

import socket  def get_my_ip():   try:     csock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)     csock.connect(('8.8.8.8', 80))     (addr, port) = csock.getsockname()     csock.close()     return addr,port   except socket.error:     return "127.0.0.1"  def int_to_ip(int_ip):   return socket.inet_ntoa(struct.pack('I', socket.htonl(int_ip)))   def ip_to_int(ip):   return socket.ntohl(struct.unpack("I", socket.inet_aton(str(ip)))[0])  (ip,port)=get_my_ip() print "ip=%s port=%d" %(ip,port) 

PortScan. py

#!/usr/bin/python # -*- coding: utf-8 -*-  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('ViolentPython\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 %prog '+\    '-H <target host> -p <target port>')   parser.add_option('-H', dest='tgtHost', type='string',\    help='specify target host')   parser.add_option('-p', dest='tgtPort', type='string',\    help='specify target port[s] separated by comma')    (options, args) = parser.parse_args()    tgtHost = options.tgtHost   tgtPorts = str(options.tgtPort).split(',')    if (tgtHost == None) | (tgtPorts[0] == None):   print parser.usage     exit(0)    portScan(tgtHost, tgtPorts)   if __name__ == '__main__':   main() 

The above is all the content of this article. I hope it will be helpful for your learning and support for helping customers.