kali linux??????

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arp-scan -I eth0 -l

netdiscover

?????????????

nmap -O 192.168.X.X
nmap -A 192.168.X.X

??????OS?????????-O?????????
????????????????-A?

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nmap -sT -p- 192.168.X.X

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telnet 192.168.X.X XXXXX
Connection closed by foreign host.