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Determine The Exit You're Using
===============================
.. image:: /_static/buttons/back.png
:target: ../double_double_toil_and_trouble.html
Lets say you're using Tor and one day you run into something odd. Maybe a
misconfigured relay, or maybe one that's being malicious. How can you figure
out what exit you're using?
Here's a simple script that prints information about the exits used to service
the requests going through Tor...
::
import functools
from stem import StreamStatus
from stem.control import EventType, Controller
def main():
print "Tracking requests for tor exits. Press 'enter' to end."
print
with Controller.from_port() as controller:
controller.authenticate()
stream_listener = functools.partial(stream_event, controller)
controller.add_event_listener(stream_listener, EventType.STREAM)
raw_input() # wait for user to press enter
def stream_event(controller, event):
if event.status == StreamStatus.SUCCEEDED:
circ = controller.get_circuit(event.circ_id)
exit_fingerprint = circ.path[-1][0]
exit_relay = controller.get_network_status(exit_fingerprint)
print "Exit relay for our connection to %s" % (event.target)
print " address: %s:%i" % (exit_relay.address, exit_relay.or_port)
print " fingerprint: %s" % exit_relay.fingerprint
print " nickname: %s" % exit_relay.nickname
print " locale: %s" % controller.get_info("ip-to-country/%s" % exit_relay.address, 'unknown')
print
if __name__ == '__main__':
main()
Now if you make a request over Tor...
::
% curl --socks4a 127.0.0.1:9050 google.com
<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
<TITLE>301 Moved</TITLE></HEAD><BODY>
<H1>301 Moved</H1>
The document has moved
<A HREF="http://www.google.com/">here</A>.
</BODY></HTML>
... this script will tell you about the exit...
::
% python exit_used.py
Tracking requests for tor exits. Press 'enter' to end.
Exit relay for our connection to 64.15.112.44:80
address: 31.172.30.2:443
fingerprint: A59E1E7C7EAEE083D756EE1FF6EC31CA3D8651D7
nickname: chaoscomputerclub19
locale: unknown
|
