How it works:
-
Local Server: The script starts a local server that listens on LOCAL_HOST:LOCAL_PORT. This can be any IP and port that you want to use.
-
Remote Forwarding: When a client connects to the local server, the script opens a connection to the remote server (REMOTE_HOST:REMOTE_PORT) and forwards any data received from the local client to the remote server, and vice versa.
-
Multithreading: Two threads are used per connection: one for forwarding data from the client to the remote server and another for forwarding data back from the remote server to the client.
To run: Replace REMOTE_HOST with the address of the server you want to forward data to (e.g., an external IP or domain). Adjust the port numbers (LOCAL_PORT and REMOTE_PORT) as necessary. Save the script to a .py file, and run it using Python:
python pf.py
or
python3 pf.py
How to run the code :
- Edit the Code (Optional): Modify the REMOTE_HOST, REMOTE_PORT, and LOCAL_PORT values in the script according to your use case:
LOCAL_PORT: The port on your local machine that you want to listen on. REMOTE_HOST: The remote server (IP or domain name) you want to forward traffic to. REMOTE_PORT: The port on the remote server where you want to forward traffic. Example: If you want to forward traffic from your local machine's port 8080 to the remote server example.com on port 80, your variables should look like this:
LOCAL_HOST = '0.0.0.0' # Listens on all interfaces LOCAL_PORT = 8080 # Port to listen on your local machine REMOTE_HOST = 'example.com' # Remote server REMOTE_PORT = 80 # Port on the remote server
Run the Script:
Open a terminal or command prompt and navigate to the directory where the port_forwarder.py script is located.
Example: If you saved it in a folder called my_port_forwarder on your desktop:
On Windows: Open Command Prompt and run:
python3 pf.py
On macOS/Linux: Open a Terminal and run:
python3 pf.py
The script should now be running and listening on the local port (LOCAL_PORT). Any connection that hits that port will be forwarded to the remote server (REMOTE_HOST and REMOTE_PORT).
Test the Port Forwarding: To test the port forwarding, open a new terminal or command prompt and try to connect to your local server. For example, if you're forwarding to example.com on port 80, you can use a web browser or curl to connect:
Command :-->
Troubleshooting: Permission Issues: If you get an error like PermissionError: [Errno 13] Permission denied when trying to listen on ports below 1024 (like port 80), you may need to run the script with elevated privileges (admin rights). You can do this by:
Windows: Right-click on Command Prompt and choose "Run as Administrator". macOS/Linux: Use sudo:
sudo python3 pf.py
