Tools IPEye is a TCP port scanner that can do SYN, FIN, Null, and XMAS scans. It’s a commandline tool. IPEye probes the ports on a target system and responds with closed, reject, drop, or open. Closed means there is a computer on the other end, but it doesn’t listen Read more…
Source: Port Scanning Techniques | Nmap Network Scanning
It can be done. Actually its not hard. The private IP space defined by RFC 1918 has almost 18 million IP addresses. I did host discovery on this entire space for a customer’s private IP space. Source: Scan the Entire RFC 1918 Private IP Space? Are You Crazy? Maybe Read more…
Basic Commands Scanning for TCP ports nmap -v s TARGET_HOST The -v flag is to enable verbose mode. Stealth SYN scan nmap -sS -O TARGET_HOST/24 Launches a stealth SYN scan against each machine that is up out of the 256 IPs on the class C sized network. It also tries Read more…