nmap

nmap.md

get IP own address

$ ifconfig

wlxc4e90a049454: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.8.103  netmask 255.255.255.0  broadcast 192.168.8.255
             ^^^^^^^^^^^^^

describe network

$ ipcalc 192.168.8.103

Address:   192.168.8.103        11000000.10101000.00001000. 01100111
Netmask:   255.255.255.0 = 24   11111111.11111111.11111111. 00000000
Wildcard:  0.0.0.255            00000000.00000000.00000000. 11111111
=>
Network:   192.168.8.0/24       11000000.10101000.00001000. 00000000
HostMin:   192.168.8.1          11000000.10101000.00001000. 00000001
HostMax:   192.168.8.254        11000000.10101000.00001000. 11111110
Broadcast: 192.168.8.255        11000000.10101000.00001000. 11111111
Hosts/Net: 254                   Class C, Private Internet

scan all ports on all addresses in network range

$ nmap 192.168.8.0/24

compare the results to an arp scan of the local network

$ sudo arp-scan -l