| 摘要 |
<p>Data packets are prepared for transmission by a communication application, for example, an instant messaging or email application and comprise information utilized to transmit the packets. A first transmission device obtains the data packets that are prepared for transmission and calls a tunnel transmission client module in the first device that encrypts and encapsulates the data packets prepared for transmission. The encrypted and encapsulated data packets prepared for transmission are sent to a second transmission device that is identified by destination ports within the tunnel transmission client module, via a routing device. The second transmission device decrypts, decapsulates and restores the data packets prepared for transmission by calling a tunnel transmission service module that matches the tunnel transmission client module in the first transmission device. The second transmission device further transmits the restored data packets prepared for transmission. In this manner, traffic handled by the routing device may be secured.</p> |
