Systems and methods for communicating data between client and server are provided. Method includes facilitating creation of connection comprising tunnel with channels between client side logical interface and server side logical interface. Each channel is associated with port forward of the client side logical interface and the server side logical interface. Client side logical interface and server side logical interface reside on opposite sides of firewall. Client side logical interface is for client protocol interfaces. Server side logical interface is for server protocol interfaces. Method includes receiving data unit for transmission between one of plural clients of client side logical interface and one of plural servers of server side logical interface via connection comprising tunnel. Data unit is associated with OSI model stack identifying source or destination of data unit. Client or server side logical interface provides access to protocols for modifying identified source or destination of data unit.