Via Internet Census 2012
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Abstract While playing around with the Nmap Scripting Engine
(NSE) we discovered an amazing number of open embedded devices on the
Internet. Many of them are based on Linux and allow login to standard
BusyBox with empty or default credentials. We used these devices to
build a distributed port scanner to scan all IPv4 addresses. These scans
include service probes for the most common ports, ICMP ping, reverse
DNS and SYN scans. We analyzed some of the data to get an estimation of
the IP address usage.
All data gathered during our research is released into the public domain for further study.
The full study
