RE: cookie sharing

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:[email protected]
303.473.4400 x 11


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-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of Steve Reeling
Sent: Wednesday, February 18, 2004 6:26 AM
To: '[email protected]'
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.