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I am using TorBrowser. However one of the websites I am connecting to seems to require that the exit IP address stay consistent across multiple requests. Is there a way to constrain torbrowser to use the same relay for a given domain(*.something.com). Part of the issue might be that the sub domains are changing between requests.

It's also possible there is some other issue with torbrowser and cookies that is unrelated.

Concretely what I observe is that the website works in a normal browser and I am able to login, but on torbrowser, I am sent back to the login screen.

marked as duplicate by Jens Kubieziel Mar 21 '17 at 10:32

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • sub-domains aren't isolated, for example foo.example.com and bar.example.com would both be isolated under the same example.com circuit. so if the resources are all on the same domain then it shouldn't be related to the circuit isolation. – cacahuatl Mar 20 '17 at 21:50
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This is unlikely to be related to your IP address. The Tor Browser chooses one circuit per domain. This means that one.com and another.com are likely to have different exit IP addresses. However, those circuits are kept for some time, certainly longer than you need to login. The Tor Broswer's design document (section 4.5) has some more details about it.

In my experience, logins fail mostly because:

  1. JavaScript is disabled but is required to log in. You can enable it via NoScript button (blue S) in the toolbar.

  2. Login via Tor isn't allowed (exit node IPs are blocked). Many pages just show you something as simple as "login failed" with no details. There isn't anything you can do about it.

You should be aware that if you login to an account via Tor that you have logged in via clearnet (without Tor) before, the information from the clearnet logins may be used to deanonymize you.

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