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.

Whonix tor bridge