12. 怎样通过asp的手段来检查来访者是否用了代理<% if Request.Server<I>var</I>iables("HTTP_X_FORWARDED_FOR")<>"" then response.write "<font color=#FF0000>您通过了代理服务器,"& _ "真实的IP为"&Request.Server<I>var</I>iables("HTTP_X_FORWARDED_FOR") end if%>