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debian# apt install nmap
# nmap -v -A server.corpX.un # nmap -O server.corpX.un
# nmap -PN- server.corpX.un # time nmap -O -p- val.bmstu.ru ... Nmap done: 1 IP address (1 host up) scanned in 21285.09 seconds real 354m45.142s ...
$ nmap -p80 192.168.X.7-14
# nmap -sU 172.16.1.3 !!! Очень медленно, 10-20 минут !!! # nmap -sU -p 53 195.19.33.199