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Re: [tor-bugs] #16926 [Tor Browser]: Multiple OS: Tor Browser leaks domains to system DNS management.
#16926: Multiple OS: Tor Browser leaks domains to system DNS management.
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Reporter: DrMikeTwiddle | Owner: tbb-team
Type: defect | Status: new
Priority: critical | Milestone:
Component: Tor Browser | Version: Tor: unspecified
Resolution: | Keywords:
Actual Points: | Parent ID:
Points: |
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Comment (by someone_else):
The application using Tor needs to avoid doing DNS queries. TBBs Firefox
has the setting 'Remote DNS' enabled. Firefox has a DNS manager built in
that is at least theoretically used for all DNS queries.
If 'Remote DNS' is enabled, that DNS manager will not do any DNS queries.
Firefox will not do any DNS at all, it will just hand the host names to
the socks proxy (Tor). The Tor client itself will not use DNS either, the
exit node will resolve the host name.
Most applications don't properly handle socks and perform local DNS
lookups when configured to use socks - Firefox is an exception.
Your network monitoring application may very well trigger DNS lookups.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16926#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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