Some quick notes on what nmap scans by default, the commands below will give you the ranges scanned, and there's also some lists suitable for copy/pasting. Top 1,000 TCP Ports: nmap -sT --top-ports 1000 -v -oG - Top 1,000 UDP Ports: nmap -sU --top-ports 1000 -v -oG - Ports ordered by frequency: sort -r -k3 /usr/share/nmap/nmap-services Example for specific services: nmap -sT -p*telnet* -v -oG - Co
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