Scan Techniques, TCP SYN (Stealth) scan, -sS
Half open scan Mark as filtered if no response or ICMP error Faster than -sT nmap 192.168.1.1 -sS -vsudo nmap -p2222 --packet-trace -d5 vps.chrisjanel.eu Links https://nmap.org/book/synscan.html#scan-methods-fig-syn-scan-filtered