9.1.1 Path and Host Discovery
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Purpose: Confirm the source path and discover explicitly assigned hosts before spending time on port coverage.
9.1.1.1 Check the path
From the target's working folder:
mkdir -p scans
ip -br addr
ip route get TARGET
Read: selected interface/source address. A route lookup does not prove reachability.
9.1.1.1.1 Variants — discover one host, a host list or a subnet
9.1.1.1.2 Identify reachable hosts within the assigned scope Host discovery
One host:
nmap -sn -n -oA scans/host TARGET
Assigned list: put IPs in targets.txt, one per line.
nmap -sn -n -iL targets.txt -oA scans/hosts
Explicitly assigned subnet:
nmap -sn -n -oA scans/subnet SUBNET
No response does not establish that a host is offline. A list of assigned hosts does not imply the surrounding subnet is in scope.