Hi, i am new to BT I tried to use ettercap but i think it doesn't work: i have a LAN with 3 PC: the first is a server where a created a login page, the second is the client and the third is yìthe attacker pc. When i execute these commands

echo "1" > /proc/sys/net/ipv4/ip_forward and ettercap -T -q -i wlan0 -M ARP /192.168.1.1/ /192.168.1.2/

,where 192.168.1.1 is the router IP and 192.168.1.2 is the victim IP, i don't get any error, but it seems that nothing happens while the victim pc is connecting to the server login page.
The only thing that i can sniff is when the victim pc connects to the router page (192.168.1.1) and enter the user and the password (admin-admin).

Where is the problem? It's something with ettercap or BT or with the server and login page?