Nmap Tips and Tricks

Peter Kacherginsky
24 min readDec 15, 2008

Nmap (Network MAPper) is a network port scanner with service version and operating system detection engines. The tool was originally developed by Fyodor and published in Phrack Issue 51 in 1997. The tool is command line although a number of GUIs exist. Nmap runs on a variety of platforms including Linux, *BSD, Windows, and others.

Port Scanning

Nmap uses several port scanning approaches. Table below summarizes “canned” scan types and corresponding command line flags:

  • -sT: TCP Connect() Scan

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Peter Kacherginsky

Blockchain Security, Malware Analysis, Incident Response, Pentesting, BlockThreat.net