Other tools
There are other network security tools that we can use and automate with Python. Let's take a look at a few of them.
Private VLANs
Virtual Local Area Networks (VLANs) have been around for a long time. They are essentially a broadcast domain where all hosts can be connected to a single switch, but are partitioned out to different domains, so we can separate the hosts out according to which host can see others via broadcasts. Let's look at an mapped based on IP subnets. For example, in an enterprise building, I would likely see one IP subnet per physical floor: 192.168.1.0/24 for the first floor, 192.168.2.0/24 for the second floor, and so on. In this pattern, we use a 1/24 block for each floor. This gives a clear delineation of my physical network as well as my logical network. A host wanting to communicate beyond its own subnet will need to traverse through its layer 3 gateway, where I can use an access list to enforce security.
What happens when different departments reside on...
