I set up a VPN with PPTP to a host-server.

Is there a possibility to access this server not filtering on ip-adress, but filtering on incoming port on that host-server ?
If yes, wich are most common ports used for VPN Tunneling ?

Greetz,

If this is possibel , i should set those ports inbound trusted, i think.
I was forgotten to tell this ,

Greetz,