Help with a Sonicwall and Asus Router

Hi guys, I have a sonicwall located at my office which works fine, now the problem is if i am at home and go to load the web interface of my sonicwall i will enter the address such as https://ipofoffice:4443

The page then will just simply not load it stays white and the page header will show as Dell sonicwwall so it must get to the sonicwall however nothing loads

like this



i get no boxes to log in and the page times out...

Help with a Sonicwall and Asus Router