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If so, what authentication method is possible?

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Pretty sure all the browsers can do the auth. – Sathya Oct 3 '10 at 3:37
up vote 0 down vote accepted

The browsers don't do the authentication very well. I use tsocks or proxychains to do the proxy functions and authentication. Anything supported by the server is probably supported by proxychains - username/password certificates symmetric encryption...there are ways to do it all. I like to abstract it so the browser doesn't even know it's being proxied though.

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Could you clarify "very well", is there any support for authentication in the common browsers? I didn't see any. – davidparks21 Oct 3 '10 at 3:35
I haven't played with it in a seems like IE used to support some form of auth in proxy settings. it might have only been username password though. check here:… they note where to find ntlm auth configurations. IE does ntlm auth by default now. all in all the builtin auth is pretty automatic and pretty weak – RobotHumans Oct 3 '10 at 4:18

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