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masscan
TCP port scanner, spews SYN packets asynchronously, scanning entire Internet in under 5 minutes.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Nope, this doesn't work any more. Shodan checks all ports (so any attackers using data from Shodan already know which ports you have open), and tools like masscan (https://github.com/robertdavidgraham/masscan) let you portscan the entire IPv4 address space in less than 10 minutes.
It's not pretty https://github.com/nik282000/logmap/blob/main/logmap.py
Yes that's the basic idea, i tried to use fwknop first but it didn't do what i wanted it to do so i made my own