主要是在實習當中用到的IP埠掃描的一個操作，python語言，輸出到txt文件中，同時顯示在dos輸出視窗上。

程式碼：

檔名：port_scan.py

#!/usr/bin/env python

import socket

def check_port(address,port):
    s=socket.socket()
    try:
        s.connect((address,port))
        return True
    except socket.error,e:
        return False

def check_server(address, start_port, end_port):
    port = start_port
    while(port<=end_port):
        check = check_port(address, port)
        if (check):
            f1.write('Server %s Port %d is on' % (address, port)+"\n")
            print 'Server %s Port %d is on' % (address, port)
        port=port+1

if __name__=='__main__':
    f1 = open("C:\Users\Administrator\Desktop\saomiao/xxx.txt", "a")
    from optparse import OptionParser
    parser=OptionParser()
    parser.add_option("-a","--address",dest="address",default='localhost',help="Address for server",metavar="ADDRESS")
    parser.add_option("-f","--file",dest="file",default='',help="Address list",metavar="LIST")
    parser.add_option("-s","--start",dest="start_port",type="int",default=80,help="start port",metavar="SPORT")
    parser.add_option("-e","--end",dest="end_port",type="int",default=80,help="end port",metavar="EPORT")
    (options,args)=parser.parse_args()
    print 'options: %s, args: %s' % (options, args)
    port=options.start_port
    if (options.file == ''):
		check_server(options.address, options.start_port, options.end_port)
    else:
		f = open(options.file,'r')  
		currentServer = f.readline().strip()
		while(currentServer):
			#print 'server %s' % currentServer
			check_server(currentServer, options.start_port, options.end_port)
			currentServer = f.readline().strip()
		f.close()
    f1.close()
	
 

使用方法：

1.dos中進入port_scan.py路徑，用cd（空格）路徑名稱

2.輸入命令python port_scan.py -f ip.txt        (ip.txt是你需要掃描的ip清單)

3.靜靜等待就可以了，會顯示出開放的埠，如掃8080，只要把上面的80都改成8080即可