METHOD (VARIANTS) AND DEVICE (VARIANTS) FOR PROTECTING COMMUNICATION CHANNEL OF A COMPUTER NETWORK Russian patent published in 2007 - IPC G06F21/00 

FIELD: information safety of digital communication systems, possible use in distributed computing networks, combined through the Internet network.

SUBSTANCE: in the method, initial data is set, initial data packet is generated at sender side. Then received data packet is encoded and transformed to TCP/IP format. After that current addresses of sender and receiver are included in it and formed packet is transferred. Sender address is replaced. At receiver side, sender and receiver addresses are selected and compared to predetermined addresses. In case of mismatch received packets are not analyzed, and in case of match encoded data is extracted from received packet and decoded. Receiver address is replaced. Then initial data packet is repeatedly formed at sender side. Protection device consists of 2 identical local protection segments 3₁ and 3_k, one of which is connected to local computing network l_i, and k one is connected to local computing network l_k. Local computing networks are interconnected through corresponding routers 4₁,4_k and the Internet.

EFFECT: increased safety and concealment of communication channel operation.

6 cl, 27 dwg