Abstract: The invention comprises a system and method for facilitating a transfer of a data file over a communication network. In one embodiment, a first workstation having a data file stored thereon identifies a receiver of the data file, and transmits to the receiver an invitation to receive the data file. The receiver, a second workstation, uses the invitation to communicate to a web server an address for receiving the data file. The information processor securely receives packets of the data file and modifies header information in the packets before forwarding the packets of the data file to the second workstation. In an alternative embodiment, the receiver workstation invites a sender workstation to transmit a file.