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Tests
RSTPacketDetection
RSTPacketDetection
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Jun 15, 2020
by
Alexander Færøy
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'''What it detects'''
*
Detects the presence of a DPI device that sends TCP RST packets when it detects an offending connection
'''Inputs'''
*
A list of IP:port pairs to be tested.
'''Experiment'''
*
A TCP Connect scan is made to the remote IP:PORT
'''Control'''
*
If for the TCP connect we get back a RST packet then there is a DPI device injecting RST packets.
'''Output'''
*
What IP:ports are being blocked using this technique.
'''Notes'''
This is the kind of censorship that is happening in china as illustrated in this paper: http://www.cl.cam.ac.uk/~rnc1/ignoring.pdf