Network Scanning
MITRE ATT&CK, Discovery, Technique T1046
Last updated
MITRE ATT&CK, Discovery, Technique T1046
Last updated
ARP is a protocol used to resolve a MAC address for the NIC that has been configured with an IP address. ARP requests are sent in cleartext, meaning that anyone on the broadcast domain can observe and record them.
# Active scanning
arp-scan -I eth0 $subnet
# Passive reconaissance
netdiscover -i eth0 -r $subnet -p
# Perform a ping sweep with Nmap
nmap -sn $subnet/24 -oA PingSweepHosts
# Create a Live Hosts List
cat PingSweepHosts.gnmap | awk '/Up$/{print $2}' > LiveIPs.txt
# Custom host discovery with Nmap
nmap -PS21-25,80,110,139,443,445,623,3306,3389,8000,8080,8081,etc $subnet/24 -oA DiscoveredHosts
# Variation of custom discovery scan with Nmap
sudo nmap -Pn -n -sS -p $customports --min-hostgroup 255 --min-rtt-timeout 0ms --max-rtt-timeout 100ms --max-retries 1 --max-scan-delay 0 --min-rate 2000 -oA nmap-discovery -vvv -open -iL $targetfile
# Custom full port scan
sudo nmap -Pn -n -p- -sV --min-hostgroup 255 --min-rtt-timeout 25ms --max-rtt-timeout 100ms --max-retries 1 --max-scan-delay 0 --min-rate 1000 -oA full-nmap -vvv --open -iL $targetfile
# Exclude hosts from scans with Nmap by specifying IPs
nmap -sV -F --exclude 127.0.0.2,127.0.0.4 127.0.0.1/24
# Exclude hosts from scans with Nmap by specifying file
nmap -sV -F --excludefile $file_name 127.0.0.1
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The following NSE scripts are not included with Nmap and should be manually added:
nndefaccts - Alternate fingerprint dataset for Nmap script http-default-accounts
Nmap-Elasticsearch-NSE - Nmap NSE script for enumerating indices, plugins and cluster nodes on an elasticsearch target
nmap -iL scope.out --script=http-default-accounts,creds-summary -oA default_credential_sweep