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Nmap Connect scan -sT on Windows does not detect closed ports #1945
nmap -sT -p- 10.0.2.5
Nmap done: 1 IP address (1 host up) scanned in 5.47 seconds
Good catch. I can reproduce this. On my Linux box, "nmap -sT scanme.nmap.org" shoes "992 closed ports" plus 4 filtered (these are correct results) and takes less than 2 seconds. On a Windows VM running under that same system, it takes 51 seconds to run the same command and finds "996 closed ports". This is with Nmap 7.80 official Windows build.