問題：
I have two websites, let's say they're example.com and anotherexample.net . 我有兩個網站，假設他們是example.com和anotherexample.net 。 On anotherexample.net/page.html , I have an IFRAME SRC="http://example.com/someform.asp" . 在anotherexample.net/page.html ，我有一個IFRAME SRC="http://example.com/someform.asp" 。 That IFRAME displays a form for the user to fill out and submit to http://example.com/process.asp . IFRAME顯示一個表單供用戶填寫並提交到http://example.com/process.asp 。 When I open the form (" someform.asp ") in its own browser window, all works well. 當我在自己的瀏覽器窗口中打開表單（“ someform.asp ”）時，一切正常。 However, when I load someform.asp as an IFRAME in IE 6 or IE 7, the cookies for example.com are not saved. 但是， 當我在IE 6或IE 7 someform.asp加載爲IFRAME時，example.com的cookie不會保存。 In Firefox this problem doesn't appear. 在Firefox中，此問題不會出現。
For testing purposes, I've created a similar setup on http://newmoon.wz.cz/test/page.php . 出於測試目的，我在http://newmoon.wz.cz/test/page.php上創建了類似的設置。
example.com uses cookie-based sessions (and there's nothing I can do about that), so without cookies, process.asp won't execute. example.com使用基於cookie的會話（我無能爲力），所以沒有cookie， process.asp將不會執行。 How do I force IE to save those cookies? 如何強制IE保存這些cookie？
Results of sniffing the HTTP traffic: on GET /someform.asp response, there's a valid per-session Set-Cookie header (eg Set-Cookie: ASPKSJIUIUGF=JKHJUHVGFYTTYFY ), but on POST /process.asp request, there is no Cookie header at all. 嗅探HTTP流量的結果：在GET /someform.asp響應中，有一個有效的每會話Set-Cookie頭（例如Set-Cookie: ASPKSJIUIUGF=JKHJUHVGFYTTYFY ），但在POST /process.asp請求中，沒有Cookie頭一點都不
Edit3: some AJAX+serverside scripting is apparently capable to sidestep the problem, but that looks very much like a bug, plus it opens a whole new set of security holes . Edit3：一些AJAX +服務器端腳本顯然能夠迴避這個問題，但這看起來非常像一個bug，而且還會打開一組全新的安全漏洞 。 I don't want my applications to use a combination of bug+security hole just because it's easy. 我不希望我的應用程序使用bug +安全漏洞的組合只是因爲它很容易。
Edit: the P3P policy was the root cause , full explanation below. 編輯： P3P政策是根本原因 ，下面有完整的解釋。
解決方案：
參考一： https://en.stackoom.com/question/1dJY參考二： https://stackoom.com/question/1dJY