Scantron looks pretty awesome! liwasc isn't using nmap internally, the entire network scanner part (https://github.com/pojntfx/liwasc/blob/main/pkg/scanners/nod...) is <150 SLOC and the port scanner is <250 SLOC. Go has some really nice low-level networking APIs, especially when combined with `gopacket`.
I haven't really tested it on anything larger than /28 - it should probably work on larger ones as well though (it limits the maximum concurrent port & network scans so that ulimit etc. aren't an issue) :)
I haven't really tested it on anything larger than /28 - it should probably work on larger ones as well though (it limits the maximum concurrent port & network scans so that ulimit etc. aren't an issue) :)