sS nmap 192.168.1.1 -sS TCP SYN port scan (Default) -sT nmap 192.168.1.1 -sT TCP connect port scan (Default without root privilege) -sn nmap 192.168.1.1/24 -sn Disable port scanning. Host discovery ...
sn nmap 192.168.1.1/24 -sn Disable port scanning. Host discovery only. -Pn nmap 192.168.1.1-5 -Pn Disable host discovery. Port scan only. -PA nmap 192.168.1.1-5 -PA22-25,80 TCP ACK discovery on port x ...