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[tor-talk] Blocking STUN Requests at Firewall?



Hi all,

I've setup a Tor transparent proxy, as per the instructions here https://trac.torproject.org/projects/tor/wiki/doc/TransparentProxy (I'm aware of the security risks of not using the Tor Browser)

It's working well except it is vulnerable to STUN requests (as per http://ipleak.net/). Does anyone have experience of blocking these requests? Based on the spec they can be TCP or UDP, so just blocking non DNS UDP doesn't seem to help. Maybe it could be achieved using DPI? Not much info on the net.

Thanks,

Bill


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