用python写的简单端口扫描器

直接放代码

此代码只支持扫描域名，要扫描IP请自己修改

from socket import *
from threading import Thread
import optparse
Port = [80,21,23,22,25,110,443,1080,3306,3389,1521,1433]
Server = ['HTTP','FTP','TELNET','SSH','SMTP','POP3','HTTPS','SOCKS','MYSQL','Misrosoft RDP','Oracle','Sql Server']
def Scan(tghost,tgport,Server):
    try:
        s=socket()
        s.connect((tghost,tgport))
        print(tghost+'____>'+str(tgport)+' open',end='||||| ')
        print(str(tgport)+'---->'+Server)
        s.close()
    except:
        print(str(tgport)+'----> '+'not open')

def hostToaddr(host):#将域名转成ip
    try:
        return gethostbyname(host)
    except:
        return 
def main():
    parser=optparse.OptionParser()
    parser.add_option('-t', dest='dname')
    #parser.add_option('-p',dest='pname')
    (options,args)=parser.parse_args()


    if(options.dname==None):
        print('[-] You must specify a target host and port')
        exit(0)
    else:
        tgname=options.dname
    ip=hostToaddr(tgname)
    #Scan(ip)
    for i,j in zip(Port,Server):#用线程提高速度
        t=Thread(target=Scan,args=(ip,i,j))
        t.start()
    input()#cmd界面如果快速闪退，请加入这条代码
if __name__=='__main__':
    main()

运行代码

代码执行结果

因为代码过于简单，这里我就不具体解释了