Logging In Via Iframe Doesn't Work With Ie9?

I've got a site http://abc.com/support, which uses an iFrame that has a source pointing to https://123.sample.com My objective was to mask the domain and the iFrame accomplishes th

Solution 1:

You shouldn't put a https:// iframe to log in within a page served over plain HTTP. The reasons for this have been discussed in a number of questions, for example:

• Secure popup login possible?
• Is posting from HTTP to HTTPS a bad practice? (on Security.SE)