Acces to SAP webdynpro application outside VPN

Hello,

In my webdynpro application I am sending links with data to different users. They cant acces the links unless they are connected to the internal network or to a VPN.

My question is whether I can connect to those links outside the VPN.

I talked to a network administrator and he said it can be done with the reverse proxy from Apache or by opening the port.The opening of port is forbidden by the client so I thought about the reverse proxy. The use of a portal is out of discussion.

The problem is that I send links with variable parameters(value,number) and the network administrator said that with the reverse proxy he cant change the destination link dinamically. He said it can only work if I send a static link.

Do you have any suggestion?

Thanks,

Efren