Apart from a few exceptions (see Use Case Exceptions), VPNs do not provide additional privacy - it is still possible for adversaries to tap your connection, except at a different point (where traffic leaves the VPN server).This includes: the hardened network configuration fingerprint, the list of installed packages and those fetched from repositories, the amount of traffic going to one IP address daily (guard nodes), and examination of dropped (invalid) versus non-dropped packets when the firewall is probed. Certain variables make it likely Whonix ™ / Tor users can be identified.VPN traffic is sensitive to Deep Packet Inspection (DPI) and Website Traffic Fingerprinting, so it is ineffective in hiding use of Whonix ™ and Tor from the ISP or skilled adversaries.In the User → VPN → Internet configuration or User → Tor → VPN → Internet configuration the use of shared IP addresses does not confuse modern surveillance systems which have a host of additional fingerprinting methods (like user agents) to identify persons of interest.In the User → VPN → Internet configuration or User → VPN → Tor → Internet configuration, anonymous payments with Bitcoin, cash and other methods does not improve anonymity because a user is still connecting to the service from their own IP address (which can be logged).In this case, all anonymous activities conducted with tunnel-chain 2 would be linked with the user's ISP-assigned IP address.Īs noted in the introduction, whether or not VPNs materially improve security and/or anonymity is a hotly debated topic, and a configuration that is frequently raised in the Whonix ™ forums. The previous example also holds true if the tunnel-link is first used with tunnel-chain 2 and then reused in tunnel-chain 1.
#USE TOR VPN SOFTWARE#
It is not recommended to run the tunnel software from within a Template. If this advice is ignored, any anonymous identities associated with the tunnel-link might be tied to the user's ISP-assigned IP address. Individual tunnel-links should only be used for a single configuration and never reused in any other tunnel-link chains. To mitigate any potential risks refer to the background information below, draw your own conclusions and take preventative steps where necessary. Warnings Tunnel Link Risks Īnonymity can be negatively affected under some circumstances by using an additional tunnel, such as a VPN, proxy or SSH. See also: Anonymity Bibliography, Selected Papers in Anonymity. While VPNs are frequently discussed, related privacy issues receive much less attention, including: browser fingerprinting, website traffic fingerprinting, TCP Initial Sequence Numbers Randomization ( tirdad ) Keystroke Deanonymization ( kloak ) guard discovery and related traffic analysis attacks ( vanguards) Time Attacks ( sdwdate) and Advanced Deanonymization Attacks. The law of triviality / bikeshedding applies to VPNs. The potential positive or negative effects on anonymity are being controversially debated. In order to circumvent state-level censorship of the Tor network, Bridges or other alternative circumvention tools will probably be required. Tor blocks by destination servers can usually be bypassed using simple proxies, rather than adding an additional tunnel to Tor.
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