如何使用localhost测试来自我们公司域的cookie ?

I am working on an asp.net intranet, that looks for a cookie from our main domain. The cookies domain value is set to "mydomain.com". Now I can easily access this cookie if I am on the same sub domain (https://test.mydomain.com). However is there a way for me to test this from I am working on an asp.net intranet, that looks