1) In Figure16.5, suppose we have two router/firewalls connected to theinternal network. A computer in the external network mayconnect to a server in the internal network via multiple routeswithin the external network. Would there be issues in havingpackets arriving from potentially two different router/firewallstoward a same server? Consider your answer from both tunnelmode and transport mode.
2)In PGP, there isno centralized method to declare a revoke public key. How toascertain whether a specific public key has been revoked by theoriginator? Discuss the issues involved. State yourassumptions.