> A NAT (whether ipv4 or ipv6) will obfuscate how many devices are on the network. Whether that is desirable depends on the circumstances. "Revisiting IoT Fing

> A NAT (whether ipv4 or ipv6) will obfuscate how many devices are on the network. Whether that is desirable depends on the circumstances. "Revisiting IoT Fingerprinting behind a NAT": * https://par.nsf.gov/servlets/purl/10332218 https://par.nsf.gov/servlets/purl/10332218 "Study on OS Fingerprinting and NAT/Tethering based on DNS Log Analysis": * https://www.irtf.org/raim-2015-papers/raim-2015-paper21.pdf https://www.irtf.org/raim-2015-papers/raim-2015-paper21.pdf Also: > […] In this paper, we design an efficient and scalable system via spatial-temporal traffic fingerprinting from an ISP’s perspective in consideration of practical issues like learning- testing asymmetry. Our system can accurately identify typical IoT devices in a network, with the additional capability of identifying what devices are hidden behind NAT and the number of each type of device that share the same IP address. […] * https://www.thucloud.com/zhenhua/papers/TON'22%20Hidden_IoT.pdf https://www.thucloud.com/zhenhua/papers/TON'22%20Hidden_IoT.... Thinking you're hiding things because you're behind a NAT is security theatre.