from socket import *
import sys

host=sys.argv[1]
service={‘21‘:‘FTP‘,‘23‘:‘Telnet‘,‘25‘:‘SMTP‘,‘53‘:‘DNS‘,‘69‘:‘TFTP‘,‘80‘:‘HTTP‘,
‘135‘:‘RPC‘,‘137‘:‘NetBIOS‘,‘139‘:‘Samba‘,‘443‘:‘HTTPS‘,‘1080‘:‘SOCKS‘,‘1521‘:‘Oracle‘,‘1433‘:‘SQL_Server‘,
‘3306‘:‘MySQL‘,‘3389‘:‘Remote_Destop‘,}

print (‘Please waiting...\n‘)
for p in service:
try:
tcpClisock=socket(AF_INET,SOCK_STREAM)
tcpClisock.connect((host,int(p)))
print(service[p]+‘:‘+p+‘--->oppend,‘)
except error:
print(service[p]+‘:‘+p+‘--->not oppen‘)
finally:
tcpClisock.close()
del tcpClisock

Python常用端口扫描