Protection against Denial of Service in Automation Systems

of service (Dos) problem has great impact on all devices in automation system. A lot of techniques have been developed that can protect systems from Dos attack. This paper presents some proposal solutions to solve this problem in order to decrease the risk factor by Using Trusted Authentication Device, Counter, and connecting the network with two routers. The first router is the basic and the other one is reserve. Then, dividing the devices into normal and vip devices, connecting vip devices with two networks, Trust Point (TP) to prevent attackers from access to AS and the optimal solution mixing between the previous ones. KeywordsSystems, Trusted authentication device, trusted point, Counter, Monitoring the Source IP addresses and network topology.

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