this post was submitted on 22 Nov 2023
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That's actually no longer true... kinda. You can't install AV on them, but there are security companies filling the niche of embedded IoT security. Now, you won't see this in your average consumer device, but on the commercial market there is a growing demand for some way to secure an embedded device from malicious software/firmware modifications.
You can SPAN internal traffic to an IDS device currently. Or, if internal network throughput isn't an issue, you can force east-west traffic through an IPS with DPI enabled instead.
That's historically how east-west would be mediated within an enterprise environment for devices incapable of being secured with agents.
Absolutely, and I've implemented similar east-west controls (as either prevent-first or for detection). You'll get no argument from me on that. I'm just noting an interesting trend as IoT devices become more ubiquitous in commercial and industrial environments, and some of those devices must (for whatever reason) have access to some part of the network or internet.