VIRTUAL PRIVATE NETWORK (VPN) TUNNELING OVER A DATA NETWORK COMBINING BOTH ENCRYPTED AND UNENCRYPTED DATA STREAMS

原文（中文）

For a new network session, it is determined whether to encrypt prior to transmitting over the VPN channel. Unencrypted is sent over the outer VPN channel and encrypted is sent over the inner VPN channel. The inner VPN channel is established over the outer VPN channel. A session table is updated with the new session. Responsive to being sent over the unencrypted VPN channel, encryption is bypassed prior to transmitting over the unencrypted VPN channel, and responsive to being sent over the encrypted VPN channel, sends the new session for encryption prior to transmitting over the encrypted VPN channel. The unencrypted VPN channel also bypasses decryption upon receipt.