nmap

Network exploration tool and security/port scanner. Some features (e.g. SYN scan) activate only when nmap is run with root privileges. More information: https://nmap.org/book/man.html.

nmap -v1|2|3 ip_or_hostname

nmap -T5 -sn 192.168.0.0/24|ip_or_hostname1,ip_or_hostname2,...

sudo nmap -A ip_or_hostname1,ip_or_hostname2,...

nmap -p port1,port2,... ip_or_host1,ip_or_host2,...

nmap -sC -sV -oA top-1000-ports ip_or_host1,ip_or_host2,...

nmap --script "default and safe" ip_or_host1,ip_or_host2,...

nmap --script "http-*" ip_or_host1,ip_or_host2,... -p 80,443

sudo nmap -T0 -D decoy_ip1,decoy_ip2,... --source-port 53 -f --data-length 16 -Pn ip_or_host