PSEUDO NETWORK ADAPTOR FOR ACQUIRING, ENCAPSULATING AND ENCRYPTING FRAME

摘要

PROBLEM TO BE SOLVED: To provide a pseudo network adaptor to acquire, encapsulate and encrypt a message or a frame. SOLUTION: A pseudo network adaptor 259 is provided with a dynamic host configuration protocol(DHCP) server emulator 272 and an address resolution protocol(ARP). The system gives an instruction of it to a local communication protocol stack 260 that data reach a node of a remote private network via a gateway (GW) and the GW via the pseudo network adaptor. A data packet from the stack is processed and sent through a transmission path via the pseudo network adaptor. An encryption engine 265 encrypts the data packet and an encapsulate engine 264 encapsulates the encrypted data packet into a tunnel data frame. A transport layer of the stack to acquire the data packet received from a remote server node and a reception path processing the acquired data packet are provided.