W3C home > Mailing lists > Public > www-p3p-dev@w3.org > February 2004

RE: cookie sharing

From: Jeff Finkelstein <jeff@customerparadigm.com>
Date: Wed, 18 Feb 2004 07:38:47 -0700
To: <www-p3p-dev@w3.org>
Message-ID: <CCELIKGIHOOKJHJKKCGDMEOKCIAA.jeff@customerparadigm.com>

Steve--

In order to have a cookie work across multiple subdomains, you need to make
sure that there is a site-wide P3P privacy policy and compact privacy
policy... otherwise your cookies from sales.acme.com will be blocked as '3rd
party cookies' if a user is on the marketing.acme.com site.

On a linux / apache server this can be accomplished by modifying the
server's main httpd.conf file; on a windows server you can specify in the
customer headers field.

-- jeff


Jeff Finkelstein
Customer Paradigm
mailto:jeff@customerparadigm.com
303.473.4400 x 11


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-----Original Message-----
From: www-p3p-dev-request@w3.org [mailto:www-p3p-dev-request@w3.org]On
Behalf Of Steve Reeling
Sent: Wednesday, February 18, 2004 6:26 AM
To: 'www-p3p-dev@w3.org'
Subject: cookie sharing



Is there anything in P3P that prevents the sharing of the same cookie across
subdomains?  example:  sales.acme.com and marketing.acme.com use the same
cookie and policy.

I have searched through a lot of the documentation and cannot find anything,
yet I have been told by a number of other developers that cookie sharing is
(or will be) prohibited by P3P.

Any help on this is greatly appreciated.
Received on Wednesday, 18 February 2004 09:37:03 GMT

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