Re: XP Pro SP2 Cookies and Cache

From: Kent W. England [MVP] (kwe_at_mvps.org)
Date: 09/18/04 

Date: Fri, 17 Sep 2004 21:09:23 -0700

bbford wrote on 17-Sep-2004 8:03 PM:
> I don't know if this is a problem or the way that things are supposed to
> work.
>
> When I log onto a site like yahoo.com to check my e-mail, instead of logging
> off the site, I go into: tools> internet options> and clear the cookies,
> temp internet files and history.
> Then, if I go back to yahoo.com again, yahoo still knows who I am because I
> am still logged on.
>
> Question is, if I cleared my cookies, temp internet files and history, how
> can yahoo.com still remember me?
>
> If I shut IE6 down and restart it again, then this clears everything as I
> have to log onto yahoo.com again.
>
> Is this normal??
>
>
It is possible for yahoo.com to tie your IP address and port to an
authentication token. As long as your traffic is coming from that IP
address and port, then you are still logged in. The cookie may only be
keeping your preferences or name. The cache and history have no effect.
After a time of inactivity or time passed, the session is terminated and
you have to logon again or use your cookie, if it is used as authentication. 

-- 
Kent W. England, Microsoft MVP for Windows Security

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