Suppose remote host A uses a VPN connection to connect to host B, with IP address 200.0.0.7. As normal Internet connection is via device eth0 with IP address 12.1.2.3; As VPN connection is via device ppp0 with IP address 10.0.0.44. Whenever A wants to send a packet via ppp0, it is encapsulated and forwarded over the connection to B at 200.0.0.7.

(a) Suppose As IP forwarding table is set up so that all traffic to 200.0.0.7 uses eth0 and all traffic to anywhere else uses ppp0. What happens if an intruder M attempts to open a connection to A at 12.1.2.3? What route will packets from A to M take?

(b) ) Suppose As IP forwarding table is (mis)configured so that all outbound traffic uses ppp0. Describe what will happen when A tries to send a packet.