MitM Sandbox

cleanup.sh

#!/bin/bash

ip netns exec mitm ip link delete br0
ip netns exec mitm ip link delete mitm-a
ip netns exec mitm ip link delete mitm-b

ip netns delete deviceA
ip netns delete deviceB
ip netns delete mitm

setup.sh

#!/bin/bash

ip netns add deviceA
ip netns add deviceB
ip netns add mitm

ip link add a-mitm type veth peer name mitm-a
ip link add b-mitm type veth peer name mitm-b

ip netns exec mitm ip link add br0 type bridge
ip link set mitm-a netns mitm
ip link set mitm-b netns mitm

ip link set a-mitm netns deviceA
ip link set b-mitm netns deviceB

ip netns exec mitm ip link set mitm-a master br0
ip netns exec mitm ip link set mitm-b master br0

ip netns exec deviceA ip link set a-mitm address e2:6a:08:00:00:01 up
ip netns exec deviceB ip link set b-mitm address e2:6a:08:00:00:02 up
ip netns exec mitm ip link set mitm-a address e2:6a:08:00:00:03 up
ip netns exec mitm ip link set mitm-b address e2:6a:08:00:00:04 up
ip netns exec mitm ip link set br0 address e2:6a:08:00:00:05 up

ip netns exec deviceA ip addr add 10.0.0.1/24 dev a-mitm
ip netns exec deviceB ip addr add 10.0.0.2/24 dev b-mitm
ip netns exec mitm ip addr add 10.0.0.3/24 dev br0

ip netns exec deviceA ping -c 2 10.0.0.2
ip netns exec deviceA ping -c 2 10.0.0.3