本文深入探讨了DNS泄露的概念及其对隐私的潜在威胁。当使用匿名或隐私服务时，DNS泄露可能导致敏感信息暴露给监视者，破坏匿名网络提供的保护。文章解释了透明DNS代理的作用，并提供了防止DNS泄露的方法。
What is a DNS leak and why should I care?
When using an anonymity or privacy service, it is extremely important that all traffic originating from your computer is routed through the anonymity network. If any traffic leaks outside of the secure connection to the network, any adversary monitoring your traffic will be able to log your activity.
DNS or the domain name system is used to translate domain names such as www.privacyinternational.org into numerical IP addresses e.g. 123.123.123.123 which are required to route packets of data on the Internet. Whenever your computer needs to contact a server on the Internet, such as when you enter a URL into your browser, your computer contacts a DNS server and requests the IP address. Most Internet service providers assign their customers a DNS server which they control and use for logging and recording your Internet activities.
Under certain conditions, even when connected to the anonymity network, the operating system will continue to use its default DNS servers instead of the anonymous DNS servers assigned to your computer by the anonymity network. DNS leaks are a major privacy threat since the anonymity network may be providing a false sense of security while private data is leaking.
If you are concerned about DNS leaks, you should also understand transparent DNS proxy technology to ensure that the solution you choose will stop the dns leak.
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