bash: dig Command Cheatsheet (GFZ 2023)

dig-queries-gfz-2023.md

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dig gfz-potsdam.de A        # A records only (name -> IP)
dig gfz-potsdam.de A +short # Short output
dig gfz-potsdam.de MX       # MX records (mail server)
dig gfz-potsdam.de TXT      # TXT records (text)
dig gfz-potsdam.de NS       # NS records (name server)
dig gfz-potsdam.de SOA      # SOA records (start of authority)
dig gfz-potsdam.de CNAME    # CNAME records (alias)

dig -x 139.17.228.189       # Reverse lookup (IP -> name)
dig -x 139.17.228.189 +short

for ip in $(dig +short gfz-potsdam.de A); do
  nmap -sS -p 1-65535;
done

dnsmap gfz-potsdam.de       # DNS enumeration

##### arp works only on local network
##### my home network is:
ip=192.168.178.20
echo "arping: $ip"
arping -c 3 $ip | grep "reply from" | cut -d" " -f4