python socket

import socket
import threading


class WebServer():
    def __init__(self):

        tcp_server  = socket.socket(socket.AF_INET,socket.SOCK_STREAM)

        tcp_server.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,True)

        tcp_server.bind(("",6768))

        tcp_server.listen(1024)

        self.tcp_server = tcp_server

    def main(self):

        while True:

            new_socket,ip_port = self.tcp_server.accept()
            print(new_socket,ip_port)
            print("ip端口号: " , ip_port)

            sub_thread = threading.Thread(target=self.handle_client_request,args=(new_socket,))

            sub_thread.setDaemon(True)

            sub_thread.start()

    def handle_client_request(self,new_socke):

        while True:

            recv_data = new_socke.recv(1024)

            if len(recv_data) == 0:
                new_socke.close()
                return

            recv_data = recv_data.decode('utf-8')
            print(recv_data)

            if recv_data =="0001":
                break


if __name__ == '__main__':
    a =  WebServer()
    a.main()

问的是外网联不到服务器的那个问题？
我觉得应该是路由器NAT配置的问题。