REQUEST | Multiple URLs ?

Hi

I'm asking if there is a method to get 2 valid URL for Ghost.

Like i wanna 2 URL for Ghost because :

http://172.16.1.31:2368 - Use for the reverse proxy in my LAN.

https://blog.ovst.fr - Use for to authorize the access from internet, without that some links don't work (because it's redirect to the LAN link).

Somebody have an idea for adding two links ?