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by maxlin
888 days ago
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"Palo Alto Networks" is something that shows up clearer than anything else in my lighttpd logs, as they include the "we're palo alto networks doing research, contact us here(email) for us not to scan" in http request headers. They appear to do full ipv4 range scan many times a day IIRC. Funnily enough I got motivated to try to make my crawler show up the same way in my own server logs by just raw scan breadth, IE by hitting so many servers I'd see my own crawler in the logs without any kind of targeting. As a kind of "planetary level experiment" source of curiosity. Had to tweak masscan settings till my crappy router could keep up with the routing load. Ended up with something like 500 addresses / sec, which pales in comparison to the best hardware used for this which when combined with masscan, scans the ipv4 space in 6 minutes.
Managed to scan 1% of the IPV4 space while I slept before I started to get seriously throttled and got a quite angry email from my ISP. Just told them "Oh thanks for noticing, I now fixed the offending device" (pressed Control+C) and never ran the scan again lol. Ran the scan with masscan with no blacklist. Don't recommend, at least not doing it more than once unless you get a good blacklist to follow |
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> This is an Internet-scale port scanner. It can scan the entire Internet in under 5 minutes, transmitting 10 million packets per second, from a single machine.
Absolutely insane