Exposing FIORI Applicaitions over internet

Here is the requirement,

We connect to client network using VPN Client and access the SAP Systems. For Fiori to be available as a mobile application this is what I proposed

1. Get the mobile devices to connect to VPN and Fiori would just run fine in a HTML5 supported brower like Safari

2. Get Webdispatcher to do the talking between Internet and the Gateway.

Now I know option 1 is a straightforward option but I would like to know how can option 2 be achieved ? I would like to sit with the basis guy to make him understand how it can be done. Does it involve the corporate networking team too in getting this done ?

Any help is deeply appreciated.

Thanks

Sunny