Need an advice how to publish full and mobile version of one site

Good day.

Have one domain "domain.com"

Simple publish using HTTP content routing and FortiWeb portal for authentication works excellent.

But also "domain.com"  has mobile version "domain.com/mobile" which uses same resources as "domain.com" but has additional modules in "/mobile" for authentication and render. Also mobile version has client for mobile phones which incompatible with FortiWeb portal.

So I need to publish "domain.com/mobile" without authentication and do it compatible with "domain.com" publication which uses FortiWeb portal.

How to do it right?