US Patent 7899914 Transmitting information across firewalls

A mechanism provides a layered communication stack. A connection manager manages the actual transfer of data through a single point-to-point connection crossing a respective firewall. A sessions manager multiplexes multiple sessions over the connection. A routing manager exploits the sessions manager for building a routing table dynamically. A routed sessions manager implements routed sessions between two applications at opposite ends of the system; the routed sessions manager exploits the sessions manager to let the data navigate through the firewalls, and it exploits the routing manager to address the data correctly from source to destination.