Network Security:

Consider the network configuration shown below. Draw figures illustrating encapsulation, addition of headers, trailers, etc. to the original IP datagram at various points in the path for the following scenarios: a) ESP transport mode only from end to end

b) AH transport from A to B, ESP tunnel from firewall G1 to firewall G2

c) AH tunnel from A to B, ESP transport from firewall G1 to firewall G3.

d) ESP tunnel from G3 to G2, and AH tunnel from G2 to B.

G1 G3 G2