Yes, it is possible to programmatically change the exit node IP of the Tor network. Tor allows users to request a new circuit (and thus a new exit node IP) by sending a signal to the Tor control port. This can be done using tools like stem (a Python library for interacting with Tor) or by sending a direct command to the Tor control socket.

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How to Change Tor's Exit Node IP Programmatically

1. Using stem (Python Library)

The stem library allows you to interact with Tor's control port. Here’s a simple example:

python
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from stem.control import Controller

# Connect to the Tor control port (default: 9051)
with Controller.from_port(port=9051) as controller:
    # Authenticate (default password: empty or set in torrc)
    controller.authenticate()

    # Request a new circuit (new exit node IP)
    controller.signal("NEWNYM")
    print("New Tor circuit created. Exit node IP changed.")

Prerequisites:

• Tor must be running with a control port enabled (default: 9051).
• The control port must allow connections (check torrc for ControlPort and HashedControlPassword settings).

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2. Using curl or socat (Direct Control Port Access)

If you don’t want to use Python, you can send a NEWNYM signal directly to Tor’s control port using tools like curl or socat:

bash
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# Example using socat (replace "yourpassword" if authentication is required)
echo -e "AUTHENTICATE \"yourpassword\"\r\nSIGNAL NEWNYM\r\n" | socat - TCP:127.0.0.1:9051

Note:

• If authentication is enabled, you must provide the correct password (hashed in torrc).
• The NEWNYM signal forces Tor to close all existing circuits and create new ones, effectively changing the exit node IP.

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3. Using Tor Browser (Manual or Automated)

If you’re using Tor Browser, you can:

• Click the "New Identity" button in the browser (manual method).
• Automate this via Selenium or PyAutoGUI (not recommended for security reasons).

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Important Notes

1. Rate Limiting: Tor enforces a 10-second delay between NEWNYM signals to prevent abuse.
2. Security: Changing the exit node IP frequently may trigger rate limits or suspicion.
3. Anonymity: While this changes your exit node, it does not guarantee full anonymity. Other factors (e.g., browser fingerprinting) still apply.
4. Legal/Ethical Use: Ensure compliance with Tor’s terms of service and local laws.

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Example Workflow

1. Start Tor with control port enabled:

   bash
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   tor --control-port 9051 --hashed-control-password "yourhashedpassword"

2. Run the Python script or socat command to send NEWNYM.
3. Verify the new IP (e.g., via curl ifconfig.me).

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Would you like a step-by-step guide for a specific use case (e.g., automation, testing, or privacy)?