Abstract
Transfer of information, between both the operator and the technical object (machine, robot, network, etc.) is related to the transport of data. This process is realized through terminals and interfaces for fixed and mobile, simple and complex structures of the system (usually the networks, such as telecommunication network, IP network, etc.). The required level of security can be achieved during both development of new and modernization of existing technical objects. Exploitation of technical systems enforces use of confidentiality mechanisms such as those related to the IPSec (Internet Protocol Security), DM/VPN (Dynamic Multipoint/Virtual Private Network), VLAN (Virtual Local Area Network) or FW (Firewall). Therefore, the paper proposes a complementary model of secure data transport which can be applied in a decentralized data base containing information about the state of a technical object. The models of secure data transfer used by IPSec, VPN and VLAN have been tested in several scenarios reflecting the transfer of sensitive data in the industrial sector between the Authorized Service Stations and the Head Office of the company. Performance tests and the obtained results are resultant of repetitive output data obtained on the basis of numerous experiments.KeywordsInternet Protocolvirtual networksweb filteringsecure data
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