#-------------------------------------------------------------------------------  # Name:        PortScan  # Purpose:     扫描目标主机的端口开放情况  #  # Author:      xxh  #  # Created:     05-12-2011  # Copyright:   (c) xxh 2011  # Licence:     <your licence>  #-------------------------------------------------------------------------------  #!/usr/bin/env python     import socket     def main():      sk = socket.socket(socket.AF_INET, socket.SOCK_STREAM)      sk.settimeout(1000)      ip=input('请输入目标主机：(默认:127.0.0.1)')      if ip=='':          ip='127.0.0.1'               s=input('请输入目标主机开始端口：(默认:80)')      if s=='':          startport=80      else:          startport=int(s)         s=input('请输入目标主机结束端口：(默认:80)')      if s=='':          endport=80      else:          endport=int(s)         for port in range(startport,endport+1):          print('正在扫描端口：%d' % port)          try:              sk.connect((ip,port))              print('Server %s port %d OK!' % (ip,port))          except Exception:              print('Server %s port %d is not connected!' % (ip,port))      sk.close()        if __name__ == '__main__':      main()