System skills: a detailed understanding of vista protection mode

        I don't know how many users are using Vista? Vista's protection model In recent days, IE has found a new development under the embrace of Vista, with a protection model. (internet option -> security -> enable protection mode) This mode uses my understanding that IE forms with different "security levels" are not allowed in an IE process. Here first explain what is called a different "security level", maybe everyone's understanding is different - for example, trust sites and ordinary sites are not a security level. Cause a problem 呃... What's the problem with that? A domain that joins a trusted site, such as a.site.com. A normal site b.site.com. Open b.site.com after opening an IE process. At this time, enter a.site.com in the URL (or have a link chain to a.site.com), you may not be able to open a.site.com normally. Or the prompt about:protectedmodeoff appears. Solution? Encountered such a problem, the solution is to first add a.site.com and b.site.com to the same security level. However, the standard is not a standard, unless you are using the internal network, if it is used on the Internet, it is not feasible. The server relay~ solution example is not written much.