Python套接字不接受外部连接

Question

I have a python socket that is supposed to be listening to all incoming sockets on port 2022 and I have port forwarding enabled as well as a dynamic DNS service. When I am connected to the same network and I try to connect to my pc using the pc's IP address it works like a charm but when I try to use the public IP of my network it won't work although I have done proper port forwarding. Here is my code, it stucks on the last line and doesn't accept any connections outside the network:

  IPC= '0.0.0.0'
  PORTC =2022
  client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  client_socket.bind((IPC,PORTC))
  client_socket.listen(5)
  connection =client_socket.accept()[0].makefile('wb')

Answer 1

If you can connect from a different PC inside your private network, then there's nothing wrong with your Python code. It's almost certain that there's something wrong with your router or the port forwarding config.

Make sure that you've re-reviewed your port forwarding settings and perhaps try restarting the router (be careful to verify your internally assigned IP addresses haven't changed if you go this route).