NMAP
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Find DHCP Server
sudo nmap -sU -p67 --script broadcast-dhcp-discover
Update MAC Address Database
sudo -i cd mkdir misc cd misc apt-get install moreutils wget https://raw.githubusercontent.com/dtonhofer/ieee_oui_downloader/master/update_nmap_mac_db.sh chmod +x update_nmap_mac_db.sh ./update_nmap_mac_db.sh mv /usr/share/nmap/nmap-mac-prefixes /root/misc/ mv /tmp/nmap_oui_processing.sZXEXK/nmap-mac-prefixes /usr/share/nmap/nmap-mac-prefixes nmap -Pn -r -n 192.168.0.0/24
Thanks - https://github.com/dtonhofer/ieee_oui_downloader
Show Hosts With Specific Open Ports
nmap --open -p 22,80 192.168.0.1-254 -oG - | grep "/open" | awk '{ print $2 }'
