I’ve been using Tor for a while now, and have been tinkering with settings to try to get it work right. One of the many frustrating things is DNS leaking whereby an application resolves DNS using the host DNS and not via Tor. Consequently, since the DNS server of your PoP (Point of Presence) is usually your ISP’s DNS server, or a DNS server maintained by your ISP, they can easily eavesdrop on your surfing behaviour, by simply connecting a DNS query with a traffic stream to that same IP soon afterwards.
Using DNS via Tor is a bit of a pain, but there are various ways I’ve found that seem to work. Some better than others.
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