使用python进行端口扫描

import socket

def net(ip,port):
    try:
        socket.setdefaulttimeout(1)
        s =socket.socket()
        s.connect((ip,port))
        print("%s:%s is open"%(ip,port))
    except:
        print("%s:%s is close"%(ip,port))

def main():
    for ips in range(1,4):
        ip = "192.168.12."+str(ips)
        for ports in ["80","7788","9999"]:
            port = int(ports)
            net(ip,port)

if __name__ == ‘__main__‘:
    main()

import socket
 
def net(ip,port):
    try: 
        socket.setdefaulttimeout(3)
        s =socket.socket()
        s.connect((ip,port))
        print("%s:%s is open"%(ip,port))
    except:
        print("%s:%s is close"%(ip,port))

def main():
    for ip1 in range(12,14):
        for ip2 in range(3,6):
            for port in ["80","443"]:
                ip = "192.168." +str(ip1) +"." +str(ip2)
                net(ip,port)

if __name__ == ‘__main__‘:
    main()