Enabling IP Forwarding

In the arp cache poisoning it is important for attacker to enable ip forwarding so the end user will not know that his packet actually peeped by attacker and attacker can do his job without any doubt by end user.


check forwarding enabled or not:
                       root@bt:~# sysctl net.ipv4.ip_forward
            net.ipv4.ip_forward = 0

                                  or

            root@bt:~# cat /proc/sys/net/ipv4/ip_forward
            0

o- ip forwarding is not enabled
1- enabled

changing ip forwarding:
                  root@bt:~# sysctl -w net.ipv4.ip_forward=1
                                 or

         root@bt:~# echo 1 > /proc/sys/net/ipv4/ip_forward

                                                                or

we can change in /etc/sysctl.conf fil e and add
                  net.ipv4.ip forward = 1

and then run
                    #sysctl -p /etc/sysctl.conf

                                   or

          #service procps restart

done... put ur black hat on ur head.....