Week 5 Posting - VXLAN and Broadcast Security

A newer concept to me is the VXLAN. I have heard of spanning VLANs over layer3 networks, but it is typically an expensive endeavor that has never made sense to me in the past. Using VXLANs where the MAC is inserted at layer 4 instead of layer 2 to create an overlay network seems like it might be a better option where broadcast domains need to be joined.
The thing that I don't like doing in my own networks, though, is relying on broadcast or flat network dependent traffic. Usually my experience has been that this dependence is related to poorly developed applications. This might be changing, and it would be interesting to know if companies are using VXLANs more or if security best practices are changing in a way that allows this to be a standard. One of the things I have seen changing a little is better endpoint security, where the network layer isn't the most prominent place to protect systems. EDR has brought a lot of security down to the host. If this trend continues, the more traditional microsegmentation style of networking could become more cumbersome than valuable, meaning layer 2 could span larger while still being secure.

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