Summary

I understand if you have hit a wall, that was a lot of information to go through and digest. However, I hope that you can see how valuable it is to understand the capabilities and extensibility of the protocols that we encountered in this chapter. The biggest takeaway you should have noticed is that we didn't have to do anything regarding security to simply send ModbusTCP and Ethernet/IP commands to our virtual controller and hardware controller.

Comprehending what the I/O does from a protocol level will add the validity you need when turning in a final discovery report to your customer. Many times in my career, I have seen a report that simply documents assets discovered on a network utilizing an insecure protocol. When pressed for details of what impact an asset using an insecure protocol could have on the organization, the response typically has little to no substance. Having exposure at the packet level allows you to supply richer assessment findings than simply...