Day 63: Building the Ryu code for DoS detection

As explained in Day 59's post, we shall be continuing the project with detecting DoS attacks on the controller by the switch. We can monitor all switches from the controller and keep observing the bandwidth usages and bitrates of OpenFlow communications between switch and controller.

The monitoring happens completely from the controller side. Each controller irrespective of whether it is responsible for installing flows in a particular switch can monitor it. A new TCP communication is established from the Ryu controller to the switch. This TCP connection is first used to get all switch statistics including flows. Then, it monitors the packets that flow in and out of a switch. This is the strategy behind monitoring.

Once monitoring is done, we would concentrate on DoS attack detection. We shall do this in the next post. I've borrowed the monitoring code from Ryu controller Github page itself. I found this link helpful in understanding how to go about integrating the code.

Refer to previous and next posts here.

Author: Shravanya
Co-author: Swati

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