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Editorial Team
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Asked: 2026-05-20T01:32:50+00:00

My main Site ( hostsite ) has an IFRAME with a registration site (

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My main Site (hostsite) has an IFRAME with a registration site (regsite) hosted on a different domain.

I want to host the registration on a different domain, because I feel storing the DB login information on hostsite is not safe as many people have access to the backend.

All browsers accept the login session-cookie coming from regsite – Internet Explorer 8 does not. The only way to make IE accept this cookie is by adding both sites to “Trusted Sites” which is not what i want.

Is there any way I can work around the cross-domain issue besides a local browser setting or is my only option to move the registration to hostsite (curl is not an option as it’s not static HTML I’m displaying on the registration site, but PHP files)?

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1 Answer

  1. Editorial Team

    I think this can be solved without moving anything, and little programming. Just with some DNS rules.

    For example, you can create a new subdomain called register.hostsite(.com) pointing to the ip where regsite is.

    Then re-direct the IFRAME to that new subdomain.

    It will get the same bits from the same server, but now it will be inside hostsite’s domain.

    That should (at least in theory) be enough to satisfy IE. I’m not 100% sure though, I haven’t used IFRAMES in a long time.

    If that doesn’t work, I’d suggest asking on serverfault, too.

    EDIT: I was looking for another issue and found this ‘micro-proxy’ PHP implementation by yahoo. It’s their recommended way of resolving this kind of issues:

    http://developer.yahoo.com/javascript/samples/proxy/php_proxy_simple.txt

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