Let's first bring up our rogue access point using airbase-ng and give it the ESSID Rogue:

We now want to create a bridge between the Ethernet interface, which is part of the authorized network, and our rogue access point interface. To do this, we will first install bridge-utils files, create a bridge interface, and name it Wifi-Bridge. The following screenshot shows the required commands in action:

apt-get install bridge-utils
brctl addbr Wifi-Bridge

Let's see the following output of the command:

We will then add both the Ethernet and the At0 virtual interface created by Airbase-ng to this bridge:

brctl addif Wifi-Bridge eth0
brctl addif Wifi-Bridge ath0

The screenshot of the command as follows:

We will then bring with these interfaces up to bring the bridge up with the following commands:

ifconfig eth0 0.0.0.0 up
ifconfig ath0 0.0.0.0 up

The screenshot of the command as follows:

We will then enable IP forwarding in the kernel...